Linear Guideways Miniature Linear Guideway

Transcription

1 8 Linear Guideways Miniature Linear Guideway

2 Information Index Preface.... General Information... - Advantages and Features of Linear Guideways... - The Principles of Selecting Linear Guideways... - Basic Load Rating of Linear Guideways... - Mounting Configurations... - Mounting Procedures.... PMAPM Linear Guideways Product Series... - PMH Series Heavy Load Ball Type Linear Guideways... - PME Series Low Profile Ball Type Linear Guideways.... PMAPM Miniature Linear Guidways Product Series Features of PMN Series Construction of PMN Series Features of PMW Series Construction of PMW Series Application Model Number of PMN/PMW Series Types Accuracy Classes Preload Dust Proof Accessories Mounting Surface Accuracy Tolerance Cautions for Installation Standard and Maximum Lengths of Rail Dimensions for PMN Series

3 - Dimensions for PMW Series The specifications in this catalogue are subject to change without notification.

4 Linear Guideways Preface A linear guideway allows a type of linear motion that utilizes rolling elements such as balls or rollers. By using re-circulating rolling elements between the rail and the block, a linear guideway can achieve high precision linear motion. Compared to a traditional slide, the coefficient of friction for a linear guideway is only /. Because of the restraint effect between the rails and the blocks, linear guideways can take up loads in both the up/down and the left/right directions. With these features, linear guideways can greatly enhance moving accuracy, especially, when accompanied with precise ball screws.. General Information - Advantages and Features of PMAPM Linear Guideways () High positional accuracy When a load is driven by a linear motion guideway, the frictional contact between the load and the bed desk is rolling contact. The coefficient of friction is only / of traditional contact, and the difference between the dynamic and the static coefficient of friction is small. Therefore, there would be no slippage while the load is moving. () Long life with high motion accuracy With a traditional slide, errors in accuracy are caused by the counter flow of the oil film. Insufficient lubrication causes wear between the contact surfaces, which become increasingly inaccurate. In contrast, rolling contact has little wear; therefore, machines can achieve a long life with highly accurate motion. () High speed motion is possible with a low driving force Because linear guideways have little friction resistance, only a small driving force is needed to move a load. This results in greater power savings, especially in the moving parts of a system. This is especially true for the reciprocating parts. () Equal loading capacity in all directions With this special design, these linear guideways can take loads in either the vertical or horizontal directions. Conventional linear slides can only take small loads in the direction parallel to the contact surface. They are also more likely to become inaccurate when they are subjected to these loads. () Easy installation Installing a linear guideway is fairly easy. Grinding or milling the machine surface, following the recommended installation procedure, and tightening the bolts to their specified torque can achieve highly accurate linear motion. () Easy lubrication With a traditional sliding system, insufficient lubrication causes wear on the contact surfaces. Also, it can be quite difficult to supply sufficient lubrication to the contact surfaces because finding an appropriate lubrication point is not very easy. With a linear motion guideway, grease can be easily supplied through the grease nipple on the linear guideway block. It is also possible to utilize a centralized oil lubrication system by piping the lubrication oil to the age occur. For high precision grades consider ordering a matched, non-interchangeable, assembly of a block and rail.

5 Linear Guideways - Selecting Linear Guideways Identify the condition Type of equipment Space limitations Accuracy Stiff ness Travel length Magnitude and direction of loads Moving speed, acceleration Duty cycle Service life Environment Selection of series PMH series - Grinding, milling, and drilling machine, lathe, machine center PME series - Automatic equipment, high speed transfer device, semiconductor equipment, wood cutting machine, precision measure equipment Selection of accuracy Classes: C, H, P, SP, UP depends on the accuracy of equipment Determines the size & the number of blocks According to experience Dynamic load condition If accompanied with a ball screw, the size should be similar to the diameter of ball screw. For example, if the diameter of the ball screw is mm, then the model size of linear guideway should be H Calculate the max. load of block Make reference to load calculation examples, and calculate the max load. Be sure that the static safety factor of selected guideway is larger than the rated static safety factor Choosing preload Depends on the stiff ness requirement and accuracy of mounting surface Identify stiffness Calculate the deformation by using the table of stiffness values, choosing heavier preload and larger size linear guideways to enhance the stiffness Calculating service life Calculate the life time requirement by using the moving speed and frequency. Make reference to the life calculation example Selection of lubrication Grease supplied by grease nipple Oil supplied by piping joint

6 Linear Guideways - Basic Load Ratings of Linear Guideways -- Basic Static Load () Static load rating (C) Localized permanent deformation will be caused between the raceway surface and the rolling elements when a linear guideway is subjected to an excessively large load or an impact load while either at rest or in motion. If the amount of this permanent deformation exceeds a certain limit, it becomes an obstacle to the smooth operation of the linear guideway. Generally, the definition of the basic static load rating is a static load of constant magnitude and direction resulting in a total permanent deformation of. times the diameter of the rolling element and the raceway at the contact point subjected to the largest stress. The value is described in the dimension tables for each linear guideway. A designer can select a suitable linear guideway by referring to these tables. The maximum static load applied to a linear guideway must not exceed the basic static load rating. () Static permissible moment (M) The static permissible moment refers to a moment in a given direction and magnitude when the largest stress of the rolling elements in an applied system equals the stress induced by the Static Load Rating. The static permissible moment in linear motion systems is defined for three directions: MR, MP and MY. MR MP MY () Static safety factor This condition applys when the guideway system is static or under low speed motion. The static safety factor, which depends on environmental and operating conditions, must be taken into consideration. A larger safety factor is especially important for guideways subject to impact loads (See Table -). The static load can be obtained by using Eq.. Table - Static Safety Factor Load Condition fsl, fsm (Min.) Normal Load.-. With impacts/vibrations.-. f = C or f = M Eq.. P M SL SM fsl: Static safety factor for simple load C : Static load rating (kn) P: Calculated working load (kn) -- Basic Dynamic Load () Dynamic load rating (C) fsm : Static safety factor for moment M : Static permissible moment (kn mm) M : Calculated appling moment (kn mm) The basic dynamic load rating is an important factor used for calculation of service life of linear guideway. It is defined as the maximum load when the load that does not change in direction or magnitude and results in a nominal life of km of operation for a ball type linear guideway and km for a roller type linear guideway. The values for the basic dynamic load rating of each guideway are shown in dimension tables. They can be used to predict the service life for a selected linear guideway.

7 Linear Guideways - Mounting Configurations Linear guideways have equal load ratings in the radial, reverse radial and lateral directions. The application depends on the machine requirements and load directions. Typical layouts for linear guideways are shown below: Use of one rail and mounting reference side use of two rails(block movement) use of two rails(block fixed) use of two external rails use of two internal rails total surface fixed installation HW type block with mounting holes in different directions.

8 Linear Guideways - Mounting Procedures Three installation methods are recommended based on the required running accuracy and the degree of impacts and vibrations. -- Master and Subsidiary Guide For non-interchangeable type Linear Guideways, there are some differences between the master guide and subsidiary guide. The accuracy of the master guide s datum plane is better than the subsidiary s and it can be a reference side for installation. There is a mark MA printed on the rail, as shown in the figure below. Subsidiary HC 9- MA Master Spec. Manufacture No Rail No Master -- Installation to Achieve High Accuracy and Rigidity Table Rail push screw Subsidiary guide Bed Master guide Block push screw Rail Push Screw

9 Linear Guideways () Mounting methods It is possible that the rails and the blocks will be displaced when the machine is subjected to vibrations and impacts. To eliminate these difficulties and achieve high running accuracy, the following four methods are recommended for fixing. Mounting with a push plate Mounting with push screws Mounting with taper gib Mounting with needle roller () Procedure of rail installation Before starting, remove all dirt from the mounting surface of the machine. Oil stone Place the linear guideway gently on the bed. Bring the guideway into close contact with the datum plane of the bed. Check for correct thread engagement when inserting a bolt into the mounting hole while the rail is being placed on the mounting surface of the bed. Tighten the push screws sequentially to ensure close contact between the rail and the side datum plane. Tighten the mounting bolts with a torque wrench to the specified torque. Install the remaining linear guideway in the same way.

10 Linear Guideways () Procedure of block installation Place the table gently on the blocks. Next, tighten the block mounting bolts temporarily. Push the blocks against the datum plane of the by tightening the push table and position the table screws. The table can be fixed uniformly by tightening the mounting bolts on master guide side and subsidiary side in to sequences. -- Installation of the Master Guide without Push Screws To ensure parallelism between the subsidiary guide and the master guide without push screws, the following rail installation methods are recommended. The block installation is the same as mentioned previously. Table Block push screw Subsidiary guide Bed Master guide () Installation of the rail on the subsidiary guide side Using a vice Place the rail into the mounting plane of the bed. Tighten the mounting bolts temporarily; then use a vice to push the rail against the side datum plane of the bed. Tighten the mounting bolts in sequence to the specified torque. 7

11 Linear Guideways () Installation of the rail on the subsidiary guide side Method with use of a straight edge Set a straight edge between the rails parallel to the side datum plane of the rail on the master guide side by using a dial gauge. Use the dial gauge to obtain the straight alignment of the rail on the subsidiary guide side. When the rail on the subsidiary guide side is parallel to the master side, tighten the mounting bolts in sequence from one end of the rail to the other. Subsidiary guide Master guide Method with use of a table Fix two blocks on the master guide side to the table. Temporarily fix the rail and one block on the subsidiary guide side to the bed and the table. Fix a dial gauge stand on the table surface and bring it into contact with the side of the block on the subsidiary guide side. Move the table from one end of the rail to the other. While aligning the rail on the subsidiary side parallel to the rail on the master guide side, tighten the bolts in sequence. Method following the master guide side When a rail on the master guide side is correctly tightened, fix both blocks on the master guide side and one of the two blocks on the subsidiary guide side completely to the table. When moving the table from one end of the rail, tighten the mounting bolts on the subsidiary guide side completely. Method with use of a jig Use a special jig to ensure the rail position on the subsidiary guide side. Tighten the mounting bolts to the specified torque in sequence. Master (a) Subsidiary Master (b) Subsidiary guide guide guide guide

12 Linear Guideways -- When There Is No Side Surface of The Bed On The Master Guide Side To ensure parallelism between the subsidiary guide and the master guide when there is no side surface, the following rail installation method is recommended. The installation of the blocks is the same as mentioned previously. Table Block push screw Subsidiary Master guide Bed guide () Installation of the rail on the master guide side Using a provisional datum plane Two blocks are fixed in close contact by the measuring plate. A datum plane provided on the bed is used for straight alignment of the rail from one end to the other. Move the blocks and tighten the mounting bolts to the specified torque in sequence. Method with use of a straight edge Use a dial gauge and a straight edge to confirm the straightness of the side datum plane of the rail from one end to the other. Make sure the mounting bolts are tightened securely in sequence. () Installation of the rail on the subsidiary guide side The method of installation for the rail on the subsidiary guide side is the same as the case without push screws. 9

13 Linear Guideways. PMAPM Linear Guideway Product Series In an effort to meet customer s requirement and service needs PMAPM offers several different types of guides. We supply the H series which is suitable for CNC machineries, the E series for automation industries. () Types & series Table - Types & Series Series PMH Assembly Square Flange Load Height Tap hole Tap hole Drilledhole Combination High Low Heavy Load PMH-CA Superer Heavy Load PMH -HA Heavy Load - PMW-CA - PMW-CC Superer Heavy Load - PMW-HA - PMW-HC PME Low Heavy Load PMEH -CA PMEW-CA - - () Accuracy classes Table - Accuracy Classes Assembly Type Interchangeable Type Series Super Ultra Normal High Precision Normal High Precision Precision Precision (C) (H) (P) (SP) (UP) (C) (H) (P) PMH PME () Classification of preload Table - Preload Series Non-interchangeable Type Interchangeable Type Light preload Medium Preload Heavy Preload Light Preload Medium Preload (Z) (ZA) (ZB) (Z) (ZA) PMH PME - PMH Series - Heavy Load Ball Type Linear Guideway H series linear guideways are designed with load capacity and rigidity higher than other similar products with circular-arc groove and structure optimization. It features equal load ratings in the radial, reverse radial and lateral directions, and self-aligning to absorb installation-error. Thus, PMAPM H series linear guideways can achieve a long life with high speed, high accuracy and smooth linear motion.

14 Linear Guideways Linear Guideways -- Features of PMH Series () Self-aligning capability By design, the circular-arc groove has contact points at degrees. PMH series can absorb most installation errors due to surface irregularities and provide smooth linear motion through the elastic deformation of rolling elements and the shift of contact points. Self-aligning capability, high accuracy andsmooth operation canbe obtained with an installation. () Interchangeability Because of precision dimensional control, the dimensional tolerance of PMH series can be kept in a reasonable range, which means that any blocks and any rails in a specific series can be used together while maintaining dimensional tolerance. And a retainer is added to prevent the balls from falling out when the blocks are removed from the rail. () High rigidity in all four directions Because of the four-row design, the PMH series linear guideway has equal load ratings in the radial, reverse radial easy and lateral directions. Furthermore, the circular-arc groove provides a wide-contact width between the balls and the groove raceway allowing large permissible loads and high rigidity. -- Construction of PMH Series Block Bolt cap End seal (Double seals and scraper) End cap Rail Grease nipple Bottom seal Ball Retainer Rolling circulation system: Block, Rail, End Cap and Retainer Lubrication system: Grease Nipple and Piping Joint Dust protection system: End seal, Bottom Seal, Bolt Cap, Double Seals and Scraper -- Model Number of PMH Series PMH series guideways can be classified into non-interchangeable and interchangeable types. The sizes are identical. The only difference between the two types is that the interchangeable type of blocks and rails can be freely exchanged, and their accuracy can reach up to P class. The model number of PMH series contains the size, type, accuracy class, preload class, etc.

15 () Non-interchangeable type PMH W C A E R E ZA P II + DD/E H Series Block Type W: Flange Type H: Square Type Model size,,,,, Precision Code: Load Type C, H, P, SP, UP C: Heavy Load Preload Code: Z, ZA, ZB H: Super Heavy Load E: Special Rail None: Standard Rail Block Mounting A: Mounting From Top C: Top or Bottom Rail Length (mm) Rail Mounting Type R: Mounting From Top T: Bottom E: Self-Lubricant SE: Metallic End Cap Dust Protection No.of rails per axis set E: Special Block Note:. The roman numerals express a None: Standard Block matched set of rails.. No symbol indicates standard protection No. of Blocks per Rail (end seal and bottom seal). ZZ: End seal, bottom seal and scraper KK: Double seals, bottom seal and scraper. DD: Double seals and bottom seal () Interchangeable type Model Number of H Block H Series Block Type W : Flange Type H:Square Type Model size,,,,, Load Type C: Heavy Load H: Super Heavy Load PMH W C A E ZA P + ZZ/ E E: Self-Lubricant SE: Metallic End Cap Dust Protection Precision Code : C, H, P Preload Code : Z, ZA E: Special Block None: Standard Block Block Mounting Type A: Mounting From Top B: Bottom, C : Top or Bottom

16 Flange Squa re Linear Guideways -- Types () Block types There re two types of blocks: flange and square. The flange type is suitable for heavy moment load application because of the lower assembly height and wider mounting surface. Table -- Block Types Type Model Shape Height Rail Main Application Length (mm) (mm) HH-CA HH-HA HW-CA HW-HA 8 Machine Centers NC Lathes Grinding Machines 9 Precision Machining Machines Heavy Cutting Machines Automation Devices Transportation Equipment Measuring Equipment Devices Requiring High 9 Positional Accuracy HW-CC HW-HC 9

17 Linear Guideways () Rail types Besides the standard top mounting type, the bottom mounting type is also available. Table -- Rail Types Mounting from Top Mounting from bottom -- Accuracy Classes The accuracy of H series can be classified into normal (C), high (H), precision ( P), super precision ( SP ), ultra precision (UP), five classes. Please choose the class by referring the accuracy of applied equipment. () Accuracy of non-interchangeable guideways Table -- Accuracy Standards Item H -, Accuracy Classes Normal High Precision Super Precision (C) (H) (P) (SP) (UP) Unit: mm Ultra Precision Dimensional tolerance of height H ±. ± Dimensional tolerance of width N ±. ± Variation of height H..... Variation of width N..... Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9 Table -- Accuracy Standards Item H -,, Unit: mm Super Ultra Accuracy Classes Normal High Precision Precision Precision (C) (H) (P) (SP) (UP) Dimensional tolerance of height H ±. ± Dimensional tolerance of width N ±. ± Variation of height H Variation of width N Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9

18 Linear Guideways Table -- Accuracy Standards Item H- Super Unit: mm Accuracy Classes Normal (C) High (H) Pr ecision (P) Precision (SP) Precision (UP) Dimensional tolerance of height H ±. ± Dimensional tolerance of width N ±. ±. Ultra Variation of height H Variation of width N Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9 () Accuracy of interchangeable guideways Table -- Accuracy Standards Item H -, Unit: mm Accuracy Classes Normal (C) High (H) Precision (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Variation of height H... Variation of width N... Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9 Table --7 Accuracy Standards Item H -,, Unit: mm Accuracy Classes Normal(C) High (H) Precision (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Variation of height H...7 Variation of width N...7 Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9 Table --8 Accuracy Standards Item H - Unit: mm Accuracy Classes Normal (C) High (H) Precision (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Variation of height H...7 Variation of width N... Running parallelism of block surface C to surface A See Table --9 Running parallelism of block surface D to surface B See Table --9

19 Elastic displac em ent Linear Guideways () Accuracy of running parallelism Table --9 Accuracy of Running Parallelism Rail Length (mm) Accuracy (µm) C H P SP UP ~ 7 ~ 9 ~ ~ 7 ~ ~ ~, 9, ~, 8 7, ~,9 8 8,9 ~,, ~, 8, ~, 7 7, ~, Preload () Definition A preload can be applied to each guideway. Oversized balls are used. Generally, a linear motion guideway has a negative clearance between groove and balls in order to improve stiffness and maintain high precision. The figure shows the load is multiplied by the preload, the rigidity is doubled and the deflection is reduced by one half. The preload no larger than ZA would be recommended for the model size under H to avoid an overpreload affecting the guideway s life. Preload amount Z Elastic displacement without preload ZB Elastic displacement with heavy preload

20 Linear Guideways () Preload classes PMAPM offers three classes of standard preload for various applications and conditions. Table -- Preload Classes Class Code Preload Condition Examples of Application Light Preload Z ~.C Certain load direction,low impact, Transportation devices, auto-packing machines, X-Y axis for general industrial machines, welding machines, low precision required welders Medium Preload ZA.C~.7C High precision required Machining centers, Z axis for general industrial, machines, EDM, NC lathes, Prec ision X-Y tables, measuring equipment Heavy Preload ZB.C~.C High rigidity required, with vibration and impact Machining centers, grinding machines, NC lathes, horizontal and vertical milling machines, Z axis of machine tools, Heavy cutting machines Class Interchangeable Guideway Non-Interchangeable Guideway Preload classes Z, ZA Z, ZA, ZB Note: The C in the preload column denotes basic dynamic load rating. --7 Lubrication () Grease Grease nipple Mx.7P H H H H PT/8 H NO. NO. Mx.7P H Mx.7P H H H H PT /8 H N. NO. (OPTION) NO.B(OPTION) 7

21 Linear Guideways Mounting location The standard location of the grease fitting is at both ends of the block, but the nipple can be mounted at each side of block. For lateral installation, we recommend that the nipple be mounted at the nonreference side, otherwise please contact us. It is possible to perform lubrication by using the oil-piping joint. O Ring W Table -- O-Ring size and max. permissible depth for piercing Size O-Ring do (mm) W (mm) T max (mm) H.±..±..7 Lube hole at top: max. permissible depth for piercing dia..8 H.±..±..7 Tmax H.±..±..8 H.±..±.. H.±..±. 8.8 H.±..±. 8. The lubricant amount for a block filled with grease Table -- The lubricant Amount for a Block Filled with Grease Size Heavy load Super heavy load Heavy load Super heavy load Size (cm) (cm) (cm) (cm) H - H H H 7 H H 7 8 Frequency of replenishment Check the grease every km, or every - months. () Oil The recommended viscosity of oil is about ~c St. If customers need to use oil-type lubrication, please inform us. Oil refilling rate Table -- Size Refilling rate (cm/hr) Size H. H. H. H. H. - - H. - - Refilling rate (cm/hr) 8

22 Linear Guideways --8 Dust Proof Accessories () Codes of standard dust proof accessories If the following accessories are needed, please add the code followed by the model number. t End seal Bottom Seal No symbol: Standard P rotection (End seal + Bottom S eal) Spacer End seal Scraper ZZ (End seal + Bottom Seal + Scr aper) Bottom Seal End seal End seal t Spacer Bottom Seal Scraper Spacer Bottom Seal DD (Double seals + Bottom Seal) KK (Double seals + Bottom Seal + Scraper) () End seal and bottom seal To prevent life reduction caused by iron chips or dust entering the block. () Double seals Enhances the wiping effect, foreign matter can be completely wiped off. Table -- Dimensions of end seal Size H ES H ES. H ES. H ES. Thickness (t) (mm) Size H ES H ES - - Thickness (t) (mm) () Scraper The scraper removes high-temperature iron chips and larger foreign objects. Table -- Dimensions of scraper Size Thickness (t) (mm) H SC. H SC. H SC. H SC. Size H SC. - - H SC. - - Thickne ss (t) (mm) 9

23 Linear Guideways () Codes of high-dust proof accessories PMAPM develops many kinds of dust proof accessories for different application and working environment to avoid dust or debris. If the following accessories are needed, please add the code followed by the model number. Top Seal Top Seal t End seal Bottom Seal Scraper End seal Spacer Bottom Seal SH {End Seal (High-Dust Proof) ZH { End Seal (High-Dust Proof) + Bottom Seal (High Dust Proof) + Top Seal} +Bottom Seal (Hi gh Dust Proof) + Top Seal + Spacer} Top Seal End seal Top Seal End seal Bottom Seal Spacer t DH {Double End Seal (High Dust Proof) +Bottom Seal (High Dust Proof) + Top Seal} Bottom Seal Scraper Spacer KH {Double End Seal (High Dust Proof) + Bottom Seal (High Dust Proof) +Top Seal +Scraper} Note:. The available size for high dust proof accessories are H(C/H), (C/H), (C/H), (C/H) and C.. The value of fricton force will increase.~. kgf.. For higher demands of the anti-dust ability,please contact PMAPM Top Seal Top seal can efficiently avoid dust from the surface of rail or tapping hole getting inside the block.

24 Linear Guideways --9 Friction The maximum value of resistance per end seal are as shown in the table. Table -- Seal Resistance Size Resistance N (kgf) Size Resistance N (kgf) H.8 (.) H. (.) H.7 (.) H.8 (.9) H.9 (.) - - H. (.7) - - Note:kgf=9.8N -- The Accuracy Tolerance of Mounting Surface () The accuracy tolerance of rail-mounting surface Because of the Circular-arc contact design, the H linear guideway can compensate for some surface-error on installation and still maintain smooth linear motion. () The parallelism tolerance of reference surface (P) Table --7 Max. Parallelism Tolerance (P) unit: µm Preload classes Size Z ZA ZB H 8 - H 8 H H 7 H H () The accuracy tolerance of reference surface height Table -- 8 Max. Tolerance of Reference Surface Height (S ) unit: µm Size Preload classes Z ZA ZB H 8 - H 8 H 8 7 H 7 9 H H 7

25 Linear Guideways -- Cautions for Installation () Shoulder heights and fillets Block r Improper shoulder heights and fillets of mounting E surfaces will cause a deviation in accuracy and the Block interference with the chamfered part of the rail or Rail block. As long as the recommended shoulder heights H E and fillets are followed, installation inaccuracies should be eliminated. r Table --9 Shoulder Heights and Fillets Max. radius Max. radius Shoulder height Shoulder height Clearance Size of fillets of fillets of the rail of the block under block r (mm) r (mm) E (mm) E (mm) H (mm) H... H.... H.. H. H. 7. H () Tightening Torque of Bolts for Installation Improper tightening of bolts will seriously influence the accuracy of Linear Guideway installation. The following tightening torques for different sizes of bolts are recommended. Table -- Mounting Torque Size Bolt size Torque N-cm (kgf-cm) Iron Casting Aluminum H M.7P L 9 () 7 (8) () H M.8P L 88 (9) 88 () () H M P L 7 () 9 (9) 8 (7) H M8.P L () () 7 () H M8.P L () () 7 () H M.7P L 77 () 78 (8) 88 ()

26 h H T H Linear Guideways -- Dimensions for PMAPM H Series K () HH-CA / HH-HA -Mxl W G L B B C L ØD H H R H N WR Ød E P E Model No. Dimension s of Assembly (mm) H H N PMH, 9, CA 8 PMH CA, PMH HA PMH CA, PMH, HA PMH CA PMH HA PMH 7, CA 8 PMH 7 9, CA, W B B, Dimensions of Block (mm) C L L K G Mxl T H H ,. 9.,,, 7 8,,, 7,, Mx 7, 9 7, 7 Mx 8 Mx8 8 9,9 M8x M8x Mx 7 8,, 9, 8,,8 9,, W R 8 Dimensions of Rail (mm) Mount ing Bolt for Rail Basic Dyna mic Load Ratin g H R D h d P E (mm) C(kN) 7, 9 8 7, 9,, 8,, Mx 8 Mx 9 7 Mx M8x 7.7 Basi c Stati c Loa d Rati ng C (kn) M8x 9., Mx Static Rated M R kn -m ,, 98 M P kn -m , M Y kn -m , Weight Blo ck Rai l kg/ kg m., 8.,. 9., ,, 7,,,7,

27 Linear Guideways ()HW-CC /HW-HC Model No. H PMW CC PMW CC PMW HC PMW CC PMW HC PMW CC PMW HC PMW CC 8 PMW CC H N W B B Dimensions of Block (mm) Dimensions of Rail (mm) Mounti ng Bolt for Rail Basic Dynam ic Load Rating Basi c Stati c Load Ratin g C (kn) T K T H H W H C L L G M T D h d P E (mm) C(kN) R R 9.,,. 8 M Mx, , , M Mx. 7, , M Mx ,, 8, M M M 8,, , M8x M8x Mx Static Rated M R kn -m ,,9 8 M P kn -m,,,,, 7,,9,8, M Y kn -m , Weight Bloc k kg Rail kg/ m.7,...9.8,9,,,,7,,,79,

28 Linear Guideways PME Series Low Profile Ball Type - PME Series - Low Profile Ball Type Linear Guideway -- Features of the PME Series Linear Guideway The design of the PME series offers a low profile, high load capacity, and high rigidity. It also features an equal load rating in all four directions and self-aligning capability to absorb installation-error, allowing for higher accuracies. Additionally,the lower assembly height and the shorter length make the PME series more suitable for high-speed, automation machines and applications where space is limited. The retainer is designed to hold the balls in the block even when it is removed from the rail. -- Construction of PME Series Block Cap Rail End cap End seal (Double seals and scraper) Grease nipple Retainer Bottom seal Ball Rolling circulation system: Block, rail, end cap and retainer Lubrication system: Grease nipple and piping Joint Dust protection system: End seal, bottom seal, cap and scraper -- Model Number of PME Series E series linear guideways are classified into non-interchangeable and interchangeable types. The sizes of these two types are the same as one another. The main difference is that the interchangeable type of blocks and rails can be freely exchanged and they can maintain P-class accuracy. Because of strict dimensional control, the interchangeable type linear guideways are a wise choice for customers when rails do not need to be matched for an axis. The model number of the PME series identifies the size, type, accuracy class, preload class, etc.

29 Linear Guideways () Non-interchangeable type PME W C A E R E ZA P II + KK E Series Block Type W : Flange Type H:Square Type No.of Rails per Axis set Model size,,, Load Type C : Heavy Load Block Mounting Type A : Mounting from Top C : Top or bottom E: Special Block None Standard Block No. of Blocks per Rail () Interchangeable type Model Number of E Block Precision Code: C, H, P, SP, UP Preload Code: Z, ZA, ZB E: Special Rail None: Standard rail Rail Length (mm) Rail Mounting Type R/U: Mounting From Top T : Bottom Dust Protection Note:. The roman numerals are used to express the number of matched rails used in one axis. When a single rail is used in an axis, no symbol is indicated.. No symbol indicates standard protection (end seal and bottom seal). ZZ : End seal, bottom seal and scraper KK: Double seals, bottom seal and scraper. DD: Double seals and bottom seal PME W C A E ZA P + ZZ E Series Block Type W : Flange Type H : Square Type Model size,,, Load Type C : Heavy Load Dust Protection Precision Code : C, H, P Preload Code : Z, ZA E: Special Block None: Standard block Block Mounting Type A : Mounting From Top B : Bottom

30 Flange Square Linear Guideways -- Types () Block types PMAPM offers two types of linear guideways, flange and square types. Table --Block Types Type Model Shape Height (mm) Rail Length (mm) Main Applications Automation devices EH-CA EW-CA High-speed transportation 8 equipment Precision measuring equipment Semiconductor manufacturing equipment 8 *Please refer to the chapter -- for the dimensional detail. () Rail types Besides the standard top mounting type, PMAPM also offers bottom mounting type rails. Table -- Rail Types Mounting from Top Mounting from Bottom 7

31 H Linear Guideways -- Accuracy The accuracy of the E series can be classified into classes: normal(c), high(h), precision(p), super precision(sp), and ultra precision(up). Choose the class by referencing the accuracy of selected equipment. C A N D B () Accuracy of non-interchangeable guideways Table -- Accuracy Standards Item E -, Unit: mm Super Ultra Accuracy Classes Normal High Precision Precision Precision (C) (H) (P) (SP) (UP) Dimensional tolerance of height H ±. ±. Dimensional tolerance of width N ±. ± Variation of height H..... Variation of width N..... Running parallelism of block surface C to surface A See Table - -7 Running parallelism of block surface D to surface B See Table - -7 Table -- Accuracy Standards Unit: mm Item E-, Super Ultra Accuracy Classes Normal High Precision Precision Precision (C) (H) (P) (SP) (UP) Dimensional tolerance of height H ±. ±. Dimensional tolerance of width N ±. ± Variation of height H Variation of width N Running parallelism of block surface C to surface A S ee Table - -7 Running parallelism of block surface D to surface B S ee Table

32 Linear Guideways () Accuracy of interchangeable guideways Table -- Accuracy Standards Item E -, Unit: mm Accuracy Classes Normal High Precision (C) (H) (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Variation of height H... Variation of width N... Running parallelism of block surface C to surface A See Table --7 Running parallelism of block surface D to surface B See Table --7 Table -- Accuracy Standards Item E -, Unit: mm Accuracy Classes Normal High Precision (C) (H) (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Variation of height H...7 Variation of width N...7 Running parallelism of block surface C to surface A See Table --7 Running parallelism of block surface D to surface B See Table --7 () Accuracy of running parallelism Table --7 Accuracy of Running Parallelism Rail Length (mm) Accuracy (µm) C H P SP UP ~ 7 ~ 9 ~ ~ 7 ~ ~ ~, 9, ~, 8 7, ~,9 8 8,9 ~,, ~, 8, ~, 7 7, ~,

33 Elastic displacement Linear Guideways -- Preload () Definition A preload can be applied to each guideway. Generally, a linear motion guideway has a negative clearance between the groove and balls in order to improve stiffness and maintain high precision. The figure shows that adding a preload can improve stiffness of the linear guideway. A preload no greater than ZA would be recommended for model sizes smaller than E. This will avoid an over-loaded condition that would affect guideway life. Z Elastic displacement with very light preload ZB Elastic displacement with medium preload Preload amount () Preload classes PMAPM offers three standard preloads for various applications and conditions. Table --8 Preload Classes Class Code Preload Condition Very Light Preload Light Preload Medium Preload Z ~.C Certain load direction,low impact, low precision required ZA.C~.C low load and high precision required ZB.C~.8C High rigidity required, with vibration and impact Class Interchangeable Guideway Non-Interchangeable Guideway Preload classes Z, ZA Z, ZA, ZB Note: The C in the preload column denotes basic dynamic load rating. --7 Lubrication () Grease Grease nipple Mx.7P E Mx.7P E E E Mx.7P E E E

34 Linear Guideways Mounting location The standard location of the grease fitting is at both ends of the block, the nipple may be mounted in the side or top of the block. For lateral installation, we recommend that the nipple be mounted to the nonreference side, otherwise please contact us. When lubricating from above, in the recess for the O-ring, a smaller, preformed recess can be found. Preheat the.8 mm diameter metal tip. Carefully open the small recess with the metal tip and pierce through it. Insert a round sealing ring into the recess. (The round sealing ring is not supplied with the block) Do not open the small recess with a drill bit this may introduce the danger of contamination. It is possible to carry out the lubrication by using the oil-piping joint. O Ring W Table --9 O-Ring size and max. permissible depth for piercing Lube hole at top: Size O-Ring max. permissible depth for piercing do(mm) W (mm) T max (mm) E. ±.. ±..9 Tmax dia..8 E. ±.. ±. 8. E. ±.. ±.. E. ±.. ±.. The oil amount for a block filled with grease Table -- Size Medium L oad Heavy L oad (cm) (cm) E.8. E.. E.8. E.7. Frequency of replenishment Check the grease every km, or every - months.

35 Linear Guideways --8 Dust Protection Equipment () Codes of equipment If the following equipment is needed, please indicate the code followed by the model number. End seal End seal Bottom Seal Scraper Bottom Seal No symbol: Standar d Protection (End seal + Bottom seal) ZZ(End seal + Bottom seal + Scrap er) End seal End seal t t Bottom Seal Scraper Bottom Seal DD (Double seals + Bottom Seal) KK (Double seals + Bottom Seal + Scrap er) () End seal and bottom seal Protects against contaminants entering the block. Reduces potential for groove damage resulting in a reduction of life ratings. () Double seals Removing foreign matters from the rail to prevent contaminants from entering the block. Table -- Dimensions of end seal Size E E E E Thickness (t) (mm)

36 Linear Guideways () Scraper Clears larger contaminants, such as weld spatter and metal cuttings, from the rail. Metal scraper protects end seals from excessive damage. Table -- Dimensions of Scraper Size E.8 E.8 E E Thickness (t) (mm)

37 Linear Guideways --9 Friction The maximum value of resistance per end seal are as shown in the table. Table -- Seal Resistance Size E. E. E. E. Resistance N (kgf) Note:kgf=9.8N -- Mounting Surface Accuracy Tolerance Because of the circular-arc contact design, the E linear guideway can withstand surface-error installation and deliver smooth linear motion. When the mounting surface meets the accuracy requirements of the installation, the high accuracy and rigidity of the guideway will be obtained without any difficulty. For faster installation and smoother movement, PMAPM offers a preload with normal clearance because of its ability to absorb higher deviations in mounting surface inaccuracies. S P () Table -- Max. Parallelism Tolerance (P) unit: µm Size Preload cl asses Z ZA ZB E 8 - E 8 E E 7 Table -- Max. Tolerance of Reference Surface Height (S ) unit: µm Size Preload cl asses Z ZA ZB E 8 - E 8 E 8 7 E 7 9

38 Linear Guideways -- Cautions for Installation () Shoulder heights and chamfers Improper shoulder heights and chamfers of mounting surfaces will cause deviations in accuracy and rail or block interference with the chamfered part. When recommended shoulder heights and chamfers are used, problems with installation accuracy should be eliminated. r Block E Block Rail H E r Table -- Shoulder Heights and Chamfers Max. radius Max. radius Shoulder height Shoulder height Clearance Size of fillets of fillets of the rail of the block under block r (mm) r (mm) E (mm) E (mm) H (mm) E E E E unit: mm () Tightening Torque of Bolts for Installation Improperly tightened mounting bolts will seriously affect the accuracy of linear guide installations. The following tightening torques for different sizes of bolts are recommended. Table --7 Tightening Torque Size Bolt size Torque N-cm(kgf-cm) Iron E M.P L 8 (9) E M.8P L 88 (9) E M P L 7 () E M P L 7 () Note: kgf = 9.8 N

39 h H T Linear Guideways -- Dimensions for E Series () EH-CA K K G L L G W L L C B B -Mxl -Mxl ØD H R H N WR Ød EGH-CA EGH-SA E P E M Y M R M P Model No. PMEH CA PMEH CA Dimensio ns H 8 H N W B B Dimensions of Block C L L K G Mxl T ,, Mx Mx 7 H H Dimensions of R ail (mm) W R 8 H R Mounti ng Bolt for Rail Basic Dynam ic Load Rating D h d P E (mm) C(kN) 9 Basi c Stati c Load Ratin g C (kn) Mx 7,8.9 Mx,. Static Rated Moment Mr Mp My.... knm knm knm.. Weight kg.. kg/ m,,8 Note : kgf = 9.8 N

40 H H T T H Linear Guide K () EW-CC K G L L C -M ØD L G L W -M B B E Ød P EGW-CA M R M P EGW-SA E N WR M Y Model No. EW CC EW CC Dimensio ns of Assembly (mm) H 8 H N 9 W B 9 9 B Dimensions of Block (mm) C L L K G M T ,, M M T H H W R Dimensions of R ail (mm) H R Mounti ng Bolt for Rail Basic Dyna mic Load Rating D h d P E (mm) C(kN) 9 Mx 7,8 Mx, Basi c Stati c Loa d Rati ng C (kn). 9. Static Rated Moment M R M P M Y kn -m.. kn -m.. kn -m.. Weight Blo ck kg.. Rai l kg/ m,, 8 Note : kgf = 9.8 N 7

41 Linear Guideways Type Comparison Table For The Linear Guide Type PMAPM HIWIN THK PMI TBI ABBA STAF CPC PHHCA HGHCA HSRR MSAS TRHVL BRCR BGXHBN HRCMN PHHCA HGHCA HSRR MSAS TRHVL BRCR BGXHBN HRCMN PHHHA HGHHA HSRLR MSALS TRHVE BRCLR BGXHBL HRCML PHHCA HGHCA HSRR MSAS TRHVN BRCR BGXHBN HRCMN PMH Series PHHHA HGHHA HSRLR MSALS TEHVE BRCLR BGXHBL HRCML PHHCA HGHCA HSRR MSAS TRHVN BRCR BGXHBN HRCMN PHHHA HGHHA HSRLR MSALS TRHVE BRCLR BGXHBL HRCML PHHCA HGHCA HSRR MSAS TRHVN BRCR BGXHBN HRCMN PHHCA HGHCA HSRR MSAS TRHVN BRCR BGXHBN HRCMN PHWCA/C HGWCA/B/C / MSAE/A TRHFN BRCA BGXHFN HRCFN PHWCA/C HGWCA/B/C HSRCA/B MSAE/A TRHFN BRCA BGXHFN HRCFN PHWHA/C HGWHA/B/C HSRHA/HB MSALE/LA TRHFE BRCLA BGXHFL HRCFL PHWCA/C HGWCA/B/C HSRCA/B MSAE/A TRHFN BRCA BGXHFN HRCFN PMW Series PHWHA/C HGWHA/B/C HSRHA/HB MSALE/LA TRHFE BRCLA BGXHFL HRCFL PHWCA/C HGWCA/B/C HSRCA/B MSAE/A TRHFN BRCA BGXHFN HRCFN PHWHA/C HGWHA/B/C HSRHA/HB MSALE/LA TRHFE BRCLA BGXHFL HRCFL PHWCA/C HGWCA/B/C HSRCA/B MSAE/A TRHFN BRCA BGXHFN HRCFN PHWCA/C HGWCA/B/C HSRCA/B MSAE/A TRHFN BRCA BGXHFN HRCFN PEHCA EGHCA SSRWY/WMYSRW/WM MSBS TRSVN BRCUO BGXSBN ARCMN PMEH series PEHCA EGHCA SSRWY/WMY,SRW/WM MSBS TRSVN BRCUO BGXSBN ARCMN PEHCA EGHCA SSRWY/WMY,SRW/WM MSBS TRSVN BRCUO BGXSBN ARCMN PEHCA EGHCA SSRXWYWMY,SRW/WM MSBS TRSVN BRCUO BGXSBN ARCMN PEWCA/C EGWCA/B SRTB/TBM MSBE TRSFN / BGXSFN ARCFN PMEW series PEWCA/C EGWCA/B SRTB/TBM MSBE TRSFN / BGXSFN ARCFN PEWCA/C EGWCA/B SRTB/TBM MSBE TRSFN / BGXSFN ARCFN PEWCA/C EGWCA/B SRTB/TBM MSBE TRSFN / BGXSFN ARCFN 8

42 Miniature Linear Guideway - Features of PMN Series Design features of narrow type miniature guideways- MN: Tiny and light weight, suitable for miniature equipment. Gothic arch contact design can sustain loads from all directions and offer high rigidity and high accuracy. Steel balls are held by a miniature retainer to avoid balls from falling out, even when the blocks are removed from the rail. Interchangeable types are available in certain precision grades. - Construction of PMN Series Cap Block Grease nipple End seal End cap Rail Ball Bottom seal Retainer Rolling circulation system: Block, rail, end cap and retainer Lubrication system: Grease nipple is available for MN, lubricated by grease gun. Dust protection system: End seal, bottom seal (optional size 9,,), cap (size,) 9

43 Miniature Linear Guideway - Features of PMW Series Design features of wide type miniature guideways- MW:.The design of enlarged width increases the capacity of moment load..gothic arch contact design has high rigidity characteristic in all directions..steel balls will be held by miniature retainer to avoid the balls from falling out even when the block are removed from the rail installation. - Construction of PMW Series Block Rail End cap End seal Retainer Ball Bottom seal Rolling circulation system: Block, rail, end cap and retainer Lubrication system: Grease nipple is available for MW, lubricated by grease gun. Dust protection system: End seal, bottom seal (optional size 9,,), cap (size,) - Application MN/MW series is available for various applications, such as semiconductor equipments, PCB /IC equipments, medication, robotics, measuring equipments, automation equipments, and other miniature sliding machinery. - Model Number of PMN/PMW Series MN and MW series linear guideway can be classified into non-interchangeable and interchangeable types, which are the same size. The interchangeable type is more convenient due to replaceable rails; however, the precision is less than non-interchangeable type. With strict dimension and quality control, the interchangeable type linear guideways would be a rather suitable choice for customers when rails don t need to be paired. The model number contains information of the size, type, accuracy, preload, and so on.

44 Miniature Linear Guideway () Non-interchangeable type PMN S C A H Z II MN / MW Series Material S:Stainless Steel B: Chrome Steel Model Size :, 7, 9,,, Block Type C:Standard H:Long S:Short No. of Rails per Axis Preload Code : ZF, Z, Z Block Mounting: A:Mounting From Top C:Top or Bottom H:Fixed Hole None:Standard Rail Length (mm) No.of Blocks per rail. Note:.Symbol for No.of rails used on the same plane.no symbol indicates single rail in a axis. () Interchangeable type Interchangeable Block PMN S C A H Z MN / MW Series Material S:Stainless Steel B: Chrome Steel Model Size :, 7, 9,,, Block Type C:Standard H:Long S:Short Preload Code : ZF, Z, Z H:Fixed Hole None:Standard Block Mounting: A:Mounting From Top C:Top or Bottom Interchangeable Rail PMN S R MN / MW Series Material S:Stainless Steel B: Chrome Steel Interchangeable Rail Rail Length (mm) Model Size:, 7, 9,,,

45 Flang e Sq ua re Miniature Linear Guideway -7 Types () Block types PMAPM offers two types of linear guideways, flange and square types. Table -7- Block Types Type Model Shape Height Rail Length (mm) Main Applications PMN-C PMN-H Printer Robotics Precision measure equipment Semiconductor equipment PMW-C PMW-H 9 *Please refer to the chapter -- for the dimensional detail. () Rail types PMAPM offers standard top mounting type. Table -7- Rail Types Mounting from Top

46 H Miniature Linear Guideway -8 Accuracy Classes The accuracy of PMN/PMW series can be classified into three classes: normal (C), high(h),precision(p). Choices for different accuracy classes are available according to various requirements. C A D N W B () Accuracy of non-interchangeable guideways Table -8- Accuracy Standard of Non-interchangeable Type Normal High Precision Accuracy Classes (C) (H) (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. Pair Variation of height H...7 Pair Variation of width N (Master Rail)... Running parallelism of block surface C to surface A See Table -- Running parallelism of block surface D to surface B See Table -- Unit: mm () Accuracy of interchangeable guideways Table -8- Accuracy Standard of Interchangeable Type Accuracy Classes Normal High Precision (C) (H) (P) Dimensional tolerance of height H ±. ±. ±. Dimensional tolerance of width N ±. ±. ±. One Set Pair Variation of height H...7 Pair Variation of width N... Pair Variation of width N (Master Rail).7.. Running parallelism of block surface C to surface A See Table -- Running parallelism of block surface D to surface B See Table -- Unit: mm

47 H Miniature Linear Guideway () Accuracy of running parallelism The running parallelism C to A and D to B are related to the rail length. Table -8- Accuracy of Running Parallelism Rail L ength Accuracy (µm) Rail Length Accuracy (µm) (mm) (C) (H) (P) (mm) (C) (H) (P) ~, ~, 8 ~ 8 7, ~, 8 8 ~ 8., ~, 9 ~ 9, ~, 7 9 ~, ~, 8 ~ 7, ~,7 9 ~ 8,7 ~,8 ~ 9,8 ~,9 ~ 7,9 ~, ~ 8 8, ~ 8 ~, 9-9 Preload PMN/PMW series provides three different preload levels for various applications. Table -9- Preload Class Code Preload Accuracy Light Clear ance ZF Clearance ~µm C Ver y Light Preload Z C~P Light Preload Z.C C~P Note: C in column preload means basic dynamic load rating. - Dust Proof Accessories End seals and standard accessories fixed on both sides of the block can prevent dust from entering the block, so the accuracy and service life of a linear guideway can be maintained. Bottom seals are fixed under the skirt portion of the block to prevent dust from entering. Customers can order bottom seals by adding the mark +U followed by the model number. Sizes 9, and provide bottom seals as an option, but size, 7 do not off er the option due to the space limit of H. Note that H would reduced if bottom seals are attached, be aware of possible interference between block and mounting surface. Table -- Size Bottom seal H (mm) Size Bottom seal H (mm) PMN - - MW - - PMN MW PMN 9 MW 9.9 PMN MW. PMN MW.

48 f P Miniature Linear Guideway - Mounting Surface Accuracy Tolerance S () Table --Max. Parallelism Tolerance (P) unit: µm Size Preload cl asses ZF Z Z M M7 M9 M 9 9 M Table -- Max. Tolerance of Reference Surface Height (S ) unit: µm Preload classes Size ZF Z Z M M7 M9 M M Table -- Permissible Error of Mounting Surface Size M./ M7./ M9./ M./ M./ Flatness of the Mounting Surface unit: mm Note: The values above are suitable for preload of Z F /Z. For preload of Z or using two(or more) rails on the same plane, % or less of the values above are recommended.

49 H H Miniature Linear Guideway - Cautions for Installation Shoulder heights and fillets r r Table -- Shoulder Heights and Fillets Size Max. radius of f illets Max. radius of f illets Shoulder height Shoulder height r (mm) r (mm) H (mm) H (mm) PMN... PMN 7... PMN PMN...7 PMN... PMW... PMW PMW 9... PMW.. PMW..8 Tightening torque of bolts for installation Improper tightening of rail mounting bolts will seriously affect the accuracy of the linear guideway. The following table lists the recommended tightening torque for the specific bolt sizes. Table -- Tightening Torque Size Bolt size Torque, N-cm (kgf-cm) Iron Casting Aluminum PMN M.P L 7(.9) 9.() 9.() PMN7 M.P L 7(.9) 9.() 9.() PMN9 M.P 8L 8(9) 7() 98() PMN M.P 8L 8(9) 7() 98() PMN M.P L 8(9) 7() 98() PMW M..P 7L 8() 78.(8) 8.8() PMW7 M.P L 8(9) 7() 98() PMW9 M.P 8L 8(9) 7() 98() PMW M.7P 8L 9() 7(8) () PMW M.7P L 9() 7(8) () Note: kgf = 9.8 N

50 Miniature Linear Guideway -Standard and Maximum Lengths of Rail PMAPM offers standard lengths of rail for instant requirements. For non-standard rail lengths, it s recommended that the E value is no greater than / of the pitch(p) to prevent instability at the end of the rail, and the E value should be no less than Emin to avoid a broken mounting hole. n E P E L L =(n-) x P + x E L: Total length of rail (mm) n: Number of mounting holes P: Distance between any two holes (mm) E: Distance from the center of the last hole to the edge (mm) Eq.. Table -- unit: mm Item PMNR PMNR7 PMNR9 PMNR PMNR PMWR PMWR7 PMWR9 PMWR PMWR () () () 7() 7() () 8() 8() () () () () 7( ) 9() () 7() () () () () 7() 7() 9() () () 9() () () 9() 9() (7) 8() () () 9() () 7() 7() () () (9) (7) (7) 7(7) () (7) (7) (7) 7(7) 7(7) () (9) (8) 9(8) 7(7) (8) (9) (8) (8) (8) Standard Length L (n) 7(9) (9) (8) 7(9) (9) (9) (9) 9() () (9) 9() 9() 9() 7() 7() 9() () () () 7(9) () () (9) () () 7() 7() 7() 9() 9() 7(9) () 8(9) 7(9) 7(9) 7() 7(7) 9() 9() 9(8) 87() 7(7) 7(7) Pitch (P) Distance to End (E s ) 7. Max. Length Note:. Tolerance of E value for standard rail is.~-. mm. Tolerance of E value for jointed rail is ~-. mm.. If smaller E value is needed, please contact PMAPM. 7

51 Miniature Linear Guideway - Dimensions for MN Series ()Standard Block Type /Micro Preload Type Normal Clearance Type PMN-C Preload and precision datum datum side bottom side Technical Data Model No. PMGN7C 8 PMGN9C PMGN C PMGN C Dimensions of Block H W L B C S l L K 7 7, 8, 9, 7. 8 Mx. Mx Mx. Mx, 8, 9, 7, 7, 8 C b.... W W 7 9, 7, 8, Dimensions of Rall H, 8, 8 C a.... Coutersin k dxdxh.x.x..xx..xx..xx. F G (L fixe d size type ) Basic load Rating C Dynami c K.N Co Stati c K.N,98, 7,,8,,8,9,,9 Static Basic Rating MA N. m,8 7,, 7, MB N. m,8 7,, 7, MC N. m,7, 8,, Weight Bloc k kg Rall kg/ m..8., Kgf=N

52 Miniature Linear Guideway ()Extended Block Type/Micro Preload Type Normal Clearance Type PMN-H preload and precision datum Datum side Bottom side Technical Data Dimensions of Block Dimensions of Rall Basic load Rating Static Basic Rating Weight Model No. H PMGN7H 8 PMGN9H PMGN H PMGN H W 7 7 L 9 B C S l Mx. Mx Mx. Mx L K 7 8 C b.... W W H C a.... Coutersin k dxdxh.x.x..xx..xx..xx. F G (L fixe d size type ) C Dynami c K.N Co Stati c K.N MA N.m MB N.m MC N.m,7,9,8,8 7, 7,,, 8,,7,88,7 9, ,8 8, 7. Bloc k kg....9 Rall kg/ m..8., Kgf=N

53 Miniature Linear Guideway - Dimensions for MW Series ()Standard Block Type Micro Preload Type Normal Clearance Type PMW-C Preload and precision datum Note : H is only applicable to stainless steel precision grade Datum side Bottom side Bottom side Technical Data Dimensions of Block Model No. H W L B C S l L K Cb PMGW7C 9 PMGW9C PMGW C PMGW C Mx 7, Mx Mx. Mx. 7,, 8 9,,,.... W W W, - Dimensions of Rall H, , 9, Ca.... Coutersin k dxdxh.xx..xx..x8x..x8x. F G (L fixe d size type ) Basic load Rating C Dynami c K.N Co Stati c K.N Static Basic Rating MA N.m MB N.m MC N.m Weight Bloc k kg Rall kg/ m,7, 7, 7,,7..,7, 8, ,9,9 7,8 7,8 7..7,9,77 9, ,8 Kgf=N.97

54 Miniature Linear Guideway ()Extended Block Type/Micro Preload Type Normal Clearance Type PMW-H Preload and precision datum Datum side Bottom side Bottom side Technical Data Model No. PMW7H 9 PMW9H PMW H PMW H Dimensions of Biock H W L B C S l L K Mx Mx Mx. Mx., 8 8,. 7 7, 9,,, C b.... W W W, - Dimensions of Rall H, , 9, Ca.... Coutersin k dxdxh.xx..xx..x8x..x8x. F G(L fixe d size type ) Basic load Rating C Dynami c K.N Co Stati c K.N Static Basic Rating MA N.m MB N.m MC N.m Weight Bloc k kg Rall kg/ m,77,....9.,, , 8, ,9, ,9.,8 Kgf=N.97

55 Miniature Linear Guideway Type Comparison Table For Miniature Linear Guideway PMAPM HIWIN MISUMI IKO THK PMI WON NB CPC LWL..B RSRM MN SEBSA (-N) MRMN / / / / / RSR(T)N / SEBSAY (-N) MRML MWC RSRW(T)M MBC SEBSWA(-N) MRWN / / / / MWH RSRW(T)N / SEBSWAY(-N) MRWL MN7C MGN7C (S)SEB(Z)8 LWL7..B(N) RSR7(Z)M MSC7M M7N SEBS7A(-N) MR7MN MN7H MGN7H (S)SELB(Z)8 LWLG7..B(N) RSR7N MSC7LM M7L SEBS7AY(-N) MR7ML RSR7W(Z)M MW7C MGW7C (S)SEBW(Z)9 LWLF..B(N) MSD7M MB7N SEBS7WA(-N) MR7WN RSR7WTM RSR7WN MW7H MGW7H (S)SELBW(Z)9 LWLFG..B(N) MSD7LM MB7L SEBS7WAY(-N) MR7WL RSR7WTN LWL9..B(N) MN9C MGN9C (S)SEB(Z) RSR9K(Z)M MSC9M M9N SEBS9A(-N) MR9MN LWL9...BCS MN9H MGN9H (S)SELB(Z) LWLG9..B(N) RSR9N MSC9LM M9L SEBS9AY(-N) MR9ML LWLF8..B(N) RSR9WV MW9C MGW9C (S)SEBW(Z) RSR9WVM MSD9M MB9N SEBS9WA(-N) MR9WN LWLF8...BCS RSR9WZM MW9H MGW9H (S)SELBW(Z) LWLFG8..B(N) RSR9WN MSD9LM MB9L SEBS9WAY(-N) MR9WL LWL..B MNC MGNC (S)SEB(Z) RSRV(Z)M MSCM MN SEBSA(-N) MRMN LWL..BCS MNH MGNH (S)SELB(Z) LWLG..B RSRN MSCLM ML SEBSAY(-N) MRML LWLF..B RSRWV MWC MGWC (S)SEBW(Z) RSRWVM MSDM MBN SEBSWA(-N) MRWN LWLF..BCS RSRWZM MWH MGWH (S)SELBW(Z) LWLFG..B RSRWN MSDLM MBL SEB(S)WAY(-N) MRWL LWL..B MNC MGWC (S)SEB(Z) RSRV(Z)M MSCM MN SEBSA(-N) MRMN LWL..BCS MNH MGNH (S)SELB(Z) LWLFG..B RSRN MSCLM ML SEBSAY(-N) MRML LWL..B RSRWV MWC MGWC (S)SEBW(Z) RSRWVM MSDM MBN SEBSWA(-N) MRWN LWLF..BCS RSRWZM MWH MGWH (S)SELBW(Z) LWLFG..B RSRWN MSDLM MBL SEB(S)WAY(-N) MRWL LWL..B MNC / (S)SEB(Z) RSRVM / / SEBSA(-N) / LWL..BCS MNH / (S)SELB(Z) LWLG..B RSRN / / SEBSAY(-N) /