Miniature LM Guide RSR and RSR-W

Transcription

1 iniature Guide RSR and RSR End plate block rail End seal Ball Greace nipple ig. 1 onstruction of odel RSRV onstruction and eatures Balls roll in two rows of precisionground raceways on an rail and an block. The end plates attached to the block cause the trains of balls to circulate. In types RSR and RSR, balls circulate in the compact body of the block. As a result, linear motion with an unlimited stroke length can be achieved. The block has been designed to be spacesaving yet provide the required rigidity. hen used in combination with largediameter balls, the block can ensure high rigidity in all directions. Ultracompact iniature Guide types RSR and RSR are free from the problems involving dislocation of the cage that are often seen with crossroller guides, ball slides, and similar finitestroketype equipment. These miniature Guides can therefore provide highly reliable compact linear systems. Bears loads in any direction Types RSR and RSR can bear loads in any direction perpendicular to the rail longitudinal axis. ight moment loads can be borne by a oneaxis configuration. In type RSR in particular, the number of effective balls is increased and the rail is widened. This design has increased the rigidity against moments. Despite its compact size, even a single unit of this type of Guide provides higher durability than twoaxis linear bushes installed in parallel. Stainlesssteel type available Upon request, we can provide stainlesssteel blocks, rails, and balls. A4

2 Types and eatures Types RSR and RSRK/V Type RSR/V AIV Standard type of iniature Guide. Type RSRV modified by increasing both the length and width of the block in order to achieve greater load ratings and permissible moments. Type RSR Type RSR Type RSRV modified by increasing both the length and width of the block in order to achieve greater load ratings and permissible moments. Type RSR modified by increasing the block length, number of effective balls, and load rating; features the highest loadcarrying capability of any iniature Guide model. A

3 oad Rating and Permissible oment in Various Directions oad rating Reverseradial direction T T ateral direction ig. 2 Radial direction ateral direction T T Type RSR can bear loads in all four directions: radial, reverseradial, and the two lateral directions. The basic load ratings of types RSR through 9 in all four directions (radial, reverseradial, and the two lateral directions) are equivalent to one another. The values are given in the corresponding dimension tables. The basic load ratings of types RSR through 2 are for the exertion of a load in the radial direction in the diagram shown above. The values are given in the corresponding dimension tables. Values for the reverseradial and lateral directions are given in Table 1. Table 1 oad Ratings of Types RSR through 2 in Various Directions Direction Radial Reverseradial ateral Basic dynamic load rating =.8 T =.8 Basic static load rating =. T =.1 Equivalent load The equivalent load for types RSR through 9 when loads in various directions are exerted on its block simultaneously can be obtained using the following equation: P E = P R (P ) + P T where P E : equivalent load () In the radial direction In the reverseradial direction In the lateral direction P R : radial load () P : reverseradial load () P T : lateral load () The equivalent load for types RSR through 2 when loads in the radial and lateral, or reverseradial and lateral directions are exerted on its block simultaneously can be obtained using the following equation: P E = X P R (P ) + Y P T where P E : equivalent load () In the radial direction In the reverseradial direction In the lateral direction P R : radial load () P : reverseradial load () P T : lateral load () X and Y : equivalent factor (see Tables 2 and ) Table 2 Types RSR through 2 Equivalent actor (under radial and lateral loads) P E X Y Equivalent load in the radial direction Equivalent load in the lateral direction Table Types RSR through 2 Equivalent actor (under reverseradial and lateral loads) P E X Y Equivalent load in the reverseradial direction Equivalent load in the lateral direction A6

4 Permissible moment A B ig. In type RSR, a single block can bear moments in all directions. Table 4 gives the permissible moments in directions A, B, and for a single block. Table 4 TypeRSR Static Permissible oment RSR RSR RSR RSR RSR 9 K RSR 9 RSR V RSR RSR V RSR RSR 2 V RSR 2 RSR RSR RSR RSR RSR RSR RSR 9 V RSR 9 RSR V RSR RSR V RSR Unit: m A B c AIV A

5 Accuracy Standards Running Parallelism ormal grade High (H) Precision (P) Rail length (mm) ig 4 ig. Relationship Between Rail ength and Running Parallelism The accuracy of type RSR is shown in Table for each model number, classified into the normal, high, and precision grades. RSR RSR Accuracy standard Item Tolerance for height Tolerance for the height difference among blocks Tolerance for railtoblock lateral distance 2 Tolerance for railtoblock lateral distance 2 difference among blocks Running Parallelism of surface with surface A Table Type RSR Accuracy Standard ormal o symbol ±.. ±.. High H (as per ig. ) Unit : mm Precision P ±.. ±.. Running parallelism of surface D with surface B D (as per ig. ) Tolerance for height ±.4 ±.2 ±.1 RSR RSR 9 RSR RSR RSR 2 Tolerance for the height difference among blocks Tolerance for railtoblock lateral distance 2 Tolerance for railtoblock lateral distance 2 difference among blocks Running Parallelism of surface with surface A. ±.4.. ±.2.2 (as per ig. ). ±..1 Running parallelism of surface D with surface B D (as per ig. ) A8

6 Radial clearance Table 6 presents the radial clearances of types RSR. Table 6 Type RSR Radial learances Unit: µm learance symbol RSR RSR RSR RSR 9 RSR RSR RSR 2 omal o symbol ~ +1 ~ +1. ±2 ±2 ± ± ± Under a light preload 1. ~ 1 ~ ~ 4 ~ 6 ~ 1 ~ 14 ~ AIV odelnumber coding 2 RSRV UU P II o. of axes rail material (stainless steel in this example) Accuracy grade rail length (in mm) Radial clearance Provision of an end seal (end seals attached to both end faces in this example; when there is an end seal on one side only, this becomes U ) block material (stainless steel in this example) o. of blocks combined on a single axis ote: This coding is based on the assumption of one set of code for a oneaxis unit. (A configuration of two axes installed in parallel is given at least two sets of code.) A9

7 ontamination Protection rom our wide array of products for type RSR, you can select the one best suited for your situation. (or details on seals, see ontamination Protection for type HSR on page A269.) ot all Guide models accept all contaminationprotection accessories. Please check Table. If your choice is applicable to your system, please note that in some models, attaching a contaminationprotection accessory to an block changes the block s overall length. Add the increment specified in the corresponding dimension table to dimension. Table Applicability of Seals to Type RSR, and the Increment to Be Added to the Block verall ength Unit: mm RSR RSR RSR 9 K RSR V RSR V RSR 2 V RSR RSR RSR RSR 9 V RSR V RSR V o symbol UU Seal resistance value or the maximum value of seal resistance of Seals Type RSR...UU per block in which grease is applied, see Table 8. Table 8 aximum Resistance of seals to Type RSR Unit: Seal resistance value RSR RSR RSR 9 K RSR V RSR V RSR 2 V RSR RSR RSR RSR 9 RSR RSR ote: = Applicable The dimensions of types RSR,,,, and without seals include the head dimension of the endplate mounting screw. A6

8 omparison Between Type RSR and ther odels 1. Application using two axes of linear bushes hereas linear bushes must be used in a twoaxis configuration, type RSR can be used in a oneaxis configuration. Therefore, a system using this type of Guide can be made compact and spacesaving. Type RSR has more balls per train for bearing loads than other models, and both the block and rail are wider. High rigidity is thereby ensured against overhang loads. Installation accuracy can be established solely by bolting rails to the base, thereby reducing installation time. AIV Example comparison between types RSR and 1 Permissible moment in the vertical direction Radial load Radial load Ig. 6 inear bush 1 2. Application using a crossroller table The cage will not dislocate even during vertical installation, and linear motion with no limitation is possible. The need to make complicated clearance adjustments has been eliminated; smooth motion free from clearance can be maintained for extended periods. The wide block can be used as is, as a miniature table. omparison example between types RSR9V and VR1 Radial load Radial load ig. A61

9 Precautions on Use ountingsurface precision The standard type RSR employs a raceway shaped like a Gothicarch groove. hen it is used in a configuration in which two units are combined in parallel, errors in mountingsurface precision increase the rolling resistance, which may decrease the smoothness of the resulting motion. or the mountingsurface precision, see Section., ountingsurface Dimensional Tolerance, on page A6 or installation in a location in which the required mounting accuracy cannot be achieved, use of type RSRA (semistandard), in which the raceway shape is changed to that of a circulararc groove, is recommended. (ote, however, that this type should not be used in a oneaxis configuration.) ountingsurface Height and orner Profile ormally, mounting surfaces for blocks and rails have lateral reference surfaces to aid in positioning rails and blocks with a high degree of accuracy. or the referencesurface shoulder height, see Table 9. urthermore, provide enough space to the corner profile of a mounting surface so that the corner does not interfere with chamfers made on the blocks or rails, or provide the corner with a radius smaller than corner radius r 1, r 2 specified in Table 9. or the mountingsurface precision of type RSRA, see Section., ountingsurface Dimensional Tolerance, on page A6. ig. 8 Table 9 ountingsurface Shoulder Height and orner Radius Unit: mm odel o. rail fillet radius r1 (ax.) block fillet radius r2 (ax.) rail shoulder height H1 block shoulder height H2 E RSR RSR RSR RSR RSR 2. 4 RSR2.... RSR RSR RSR RSR RSR. 4 4 RSR. 4 A62

10 Stopper In miniature Guide types RSR and RSR, removing the block from the rail causes the balls to fall off. To prevent this, the block is delivered with stoppers installed. hen removing the stopper before the Guide is used, be careful not to allow the block to overrun. ig. 9 TypeRSR Stopper (Type ) Table 1 Dimensions of RSR Stopper (Type ) RSR RSR 9 RSR RSR RSR 2 RSR RSR 9 RSR RSR ote: A B Unit: mm Types RSR and use an ring, and type RSR uses a silicone tube. AIV Rail Standard and aximum engths Table 11 gives the standard and maximum rail lengths for type RSR. Table 11 RSR/RSR Standard and aximum Rail engths Unit: mm Rail standard length () Standard pitch G RSR RSR RSR 9 RSR RSR RSR RSR 4 RSR RSR RSR RSR RSR ax. length ote 1: All rails are made of stainless steel. A6

11 RSR/RSR StainlessSteel Type 1.6 through 2 S l 1 (K) RSR 2 S l through (K) RSR Height External dimensions idth block dimensions ength B S l 1 T K E il hole d RSR RSR RSR RSR otes: odels affixed with an feature excellent corrosion and environmental resistance, as their blocks, rails, and balls are made of stainless steel. e can provide models with stainlesssteel end plates. If you require these, contact us. or modelnumber coding, see page A9. or load ratings in various directions, see page A6. A64

12 B Ød (K) 1 h 2 S l 1 AIV Ød1 2 1 RSR Ød (K) 1 h 2 S l 1 Ød1 2 1 RSR Unit : mm rail dimensions Basic load rating ass Grease nipple d 1 d 2 h k k block kg rail kg/m or permissible moments A, B, and, see page A. or rail standard lengths, see page A6. or the screws used to fasten typersr/ rails in place, use Phillipshead machine screws of 2x.4 (# panhead machinescrew class 1) for precision equipment. A6

13 RSR/RSRK/RSRV/RSR StainlessSteel Type B Ød (K) 1 h Ød1 4 S l RSR//9K/V Height External dimensions idth ength B S l 1 block dimensions T K E il hole d RSR RSR RSR 9K RSR 9 RSR V RSR RSR V RSR RSR 2V RSR otes: odels affixed with an feature excellent corrosion and environmental resistance, as their blocks, rails, and balls are made of stainless steel. e can provide models with stainlesssteel end plates. If you require these, contact us. or modelnumber coding, see page A9. or load ratings in various directions, see page A6. A66

14 AIV 4 S l B (E) 1 T (K) 1 h Ød1 2 1 RSR,2V/ Unit: mm rail dimensions Basic load rating ass Grease nipple d 1 d 2 h k k block kg rail kg/m PB A or permissible moments A, B, and, see page A. or rail standard lengths, see page A6. or the screws used to fasten typersr/ rails in place, use Phillipshead machine screws of 2x.4 (# panhead machinescrew class 1) for precision equipment. A6

15 Type RSR (V)/RSRV/RSR 2 Ød 1 (K) 1 h Ød1 2 S l 1 RSR/ External dimensions block dimensions Height idth ength B S l T 1 K E il hole d *RSR *RSR *RSR *RSR *RSR *RSR RSR 9V *RSR 9V *RSR 9 RSR V *RSR V *RSR RSR V *RSR V *RSR otes: odels affixed with an feature excellent corrosion and environmental resistance, as their blocks, rails, and balls are made of stainless steel. e can provide models with stainlesssteel end plates. If you require these, contact us. or modelnumber coding, see page A9. or load ratings in various directions, see page A6. A68

16 T 2 B 1 (K) 1 h 4 S l 1 AIV RSR9,V/V/ 4 S l T B (K) 1 h (E) RSRV/V/ Unit: mm rail dimensions Basic load rating ass Grease nipple d 1 d 2 h k k block kg rail kg/m PB or permissible moments A, B, and, see page A. or rail standard lengths, see page A6. or the screws used to fasten typersr/ rails in place, use Phillipshead machine screws of 2x.4 (# panhead machinescrew class 1) for precision equipment. A69

17 iniature Guide Type RSRZ Patent pending rail block End plate End seal Ball (ption) Side seal ig. 1 onstruction of odel RSRZ onstruction and eatures Balls roll in two rows of precisionground raceways on an rail and an block. The end plates attached to the block cause the trains of balls to circulate. In type RSRZ, balls circulate in the compact body of the block. As a result, linear motion with an unlimited stroke length can be achieved. Guide type RSRZ is lower in price but of the same size as the models in the conventional miniature series. ith its smooth movement, low noise, and pleasant running sound, type RSRZ is a totally new development. ightweight The use of resin in some parts of the block has reduced the block mass by as much as 28% in comparison with the conventional type RSRV. Type RSRZ is therefore of the lowinertia type. Smooth movement The Rpiece at the ballreturn corner is formed into one unit with the block. This design virtually eliminates dimensional errors and enables the smooth circulation of balls. High corrosion resistance ade of stainless steel, the block, rail, and balls feature excellent corrosion resistance. onsisting of rustfree material, type RSRZ is the best choice for use in clean rooms. ow noise The noload ball path is resinmolded. As there is no metaltometal contact, operation is quiet. oise level (dba) RSR RSRZ (m/min) Velocity ig. 2 omparison of oise evel Between Types RSRZ and RSR A

18 Types and eatures Type RSRZ Type RSRZ AIV Standard type of iniature Guide. Type RSRZ modified by increasing both the length and width of the block in order to achieve greater load ratings and permissible moments. oad Rating and Permissible oment in Various Directions Reverseradial direction Radial direction T T ateral direction ateral direction T T ig. oad rating Type RSRZ can bear loads in all four directions: radial, reverseradial, and the two lateral directions. The basic load ratings of types RSRZ (Z), 9Z (Z) in all four directions (radial, reverseradial, and the two lateral directions) are equivalent to one another. The values are given in the corresponding dimension tables. Table 1 oad Ratings of Types RSRZ (Z), Z (Z) in Various Directions Direction Radial Reverseradial ateral Basic dynamic load rating =.8 T =.8 Basic static load rating =. T =.1 The basic load ratings of types RSRZ (Z), Z (Z) are for the exertion of a load in the radial direction in the diagram shown above. The values are given in the corresponding dimension tables. Values for the reverseradial and lateral directions are given in Table 1. A1

19 Equivalent load The equivalent load for types RSRZ (Z), 9Z (Z) when loads in various directions are exerted on its block simultaneously can be obtained using the following equation: P E = P R (P ) + P T where P E : equivalent load () In the radial direction In the reverseradial direction In the lateral direction P R : radial load () P : reverseradial load () P T : lateral load () The equivalent load for types RSRZ (Z), Z (Z) when loads in the radial and lateral, or reverseradial and lateral directions are exerted on its block simultaneously can be obtained using the following equation: P E = X P R (P ) + Y P T where P E : equivalent load () In the radial direction In the reverseradial direction In the lateral direction P R : radial load () P : reverseradial load () P T : lateral load () X and Y : equivalent factor (see Tables 2 and ) Table 2 Types RSRZ(Z), Z(Z) Equivalent actor (under radial and lateral loads) P E X Y Equivalent load in the radial direction Equivalent load in the lateral direction Table Types RSRZ (Z), Z (Z) Equivalent actor (under reverseradial and lateral loads) P E X Y Equivalent load in the reverseradial direction Equivalent load in the lateral direction Permissible moment Table 4 Type RSRZ, A Static Permissible oment RSR Z RSR 9 Z RSR Z RSR Z RSR Z RSR 9 Z RSR Z RSR Z A B ig. 4 In types RSRZ, Z, a single block can bear moments in all directions. Table 4 gives the permissible moments in directions A, B, and for a single block. Unit: m A B c A2

20 Accuracy Standards odelnumber coding 2 RSRZ UU P II o. of axes rail material (stainless steel in this example) Accuracy grade rail length (in mm) Radial clearance AIV ig The accuracy of types RSRZ, Z is shown in Table for each model number, classified into the normal, high, and precision grades. Table Accuracy Standard Accuracy standard Item Running Parallelism of block surface with surface A ormal o symbol High H (as per ig. 6) Unit: mm Precision P ote: Provision of a rubber seal (if there is an end seal on one side only, this becomes U ; for an end seal + side seal, this becomes SS ) block material (stainless steel in this example) o. of blocks combined on a single axis This coding is based on the assumption of one set of code for a oneaxis unit. (A configuration of two axes installed in parallel is given at least two sets of code.) Radial clearance Running parallelism of block surface D with surface B D (as per ig. 6) Table 6 presents the radial clearances of types RSRZ, Z. Tolerance for height Tolerance for the height difference among blocks Tolerance for railtoblock lateral distance 2 Tolerance for railtoblock lateral (ote 1) distance 2 difference among blocks ±.4. ±.4. ±.2. ±.2.2 ±.1. ±..1 ote 1: The accuracy values are the means of measurements taken at the center or central part of each block. Table 6 TypeRSRZ, Z Radial learances Unit: µm learance Under a omal symbol light preload o symbol 1 RSR Z RSR 9Z RSRZ RSRZ ±2 ±2 ± ± ~ 4 ~ 6 ~ 1 ~ ormal grade ote: learance 1 applies to the precision grade only. High (H) Precision (P) Rail length (mm) ig. 6 Relationship Between Rail ength and Running Parallelism A

21 ontamination Protection or types RSRZ and Z, we can provide end seals as contamination prevention accessories. Table Applicability of Seals to Type RSRZ, Z and the Increment to Be Added to the Block verall ength Unit: mm RSR Z RSR 9 Z RSR Z RSR Z RSR Z RSR 9 Z RSR Z RSR Z ote: = Applicable o symbol UU SS Precautions on Use ountingsurface precision The standard type RSRZ employs a raceway shaped like a Gothicarch groove. hen it is used in a configuration in which two units are combined in parallel, errors in mountingsurface precision increase the rolling resistance, which may decrease the smoothness of the resulting motion. or the mountingsurface precision, see Section., ountingsurface Dimensional Tolerance, on page A6. ountingsurface Height and orner Profile ormally, mounting surfaces for blocks and rails have lateral reference surfaces to aid in positioning rails and blocks with a high degree of accuracy. or the referencesurface shoulder height, see Table 9. urthermore, provide enough space to the corner profile of a mounting surface so that the corner does not interfere with chamfers made on the blocks or rails, or provide the corner with a radius smaller than corner radius r 1, r 2 specified in Table 9. The dimensions of types RSRZ, Z without seals include the head dimension of the endplate mounting screw. Seal resistance value or the maximum value of seal resistance of Seals Type RSRZ...UU per block in which grease is applied, see Table 8. Table 8 aximum Resistance of seals to Type RSRZ, Z Unit: Seal resistance value RSR Z RSR 9 Z RSR Z RSR Z RSR Z RSR 9 Z RSR Z RSR Z Table 9 ountingsurface Shoulder Height and orner Radius odel o. RSR Z RSR 9Z RSRZ RSRZ RSR Z RSR 9Z RSRZ RSRZ rail fillet radius r1 (ax.) ig. block fillet radius r2 (ax.) rail shoulder height H Unit: mm block shoulder height H2 E A4

22 Stopper In miniature Guide types RSRZ, Z, removing the block from the rail causes the balls to fall off. To prevent this, the block is delivered with stoppers installed. hen removing the stopper before the Guide is used, be careful not to allow the block to overrun. Table 1 Dimensions of the TypeRSRZ, Z Stopper (Type ) Unit: mm A B RSR Z RSR 9 Z RSR Z RSR Z RSR Z RSR 9 Z RSR Z RSR Z AIV ig. 8 TypeRSRZ Stopper (Type ) Rail Standard and aximum engths Table 11 gives the standard and maximum rail lengths for type RSRZ, Z. rail standard length () Standard pitch G Table 11 Type RSRZ/RSRZ Rail Standard and aximum engths RSR Z RSR 9Z RSR Z RSR Z RSR Z RSR 9Z RSR Z RSR Z Unit: mm 4 16 ote 1: All rails are made of stainless steel. A

23 RSRZ Type B 4 S l 1 T Ød (K) 1 h Ød1 2 1 RSRZ External dimensions block dimensions Height idth ength B S l 1 T K E il hole d RSR Z RSR 9Z RSR Z RSR Z otes: odels affixed with an feature excellent corrosion and environmental resistance, as their blocks, rails, and balls are made of stainless steel. e can provide models with stainlesssteel end plates. If you require these, contact us. or modelnumber coding, see page A. or load ratings in various directions, see page A1. A6

24 AIV B 4 S l (E) 1 T (K) 1 h Ød1 2 1 RSRZ Unit: mm rail dimensions Basic load rating ass Grease nipple d 1 d 2 h k k block kg rail kg/m PB or permissible moments A, B, and, see page A2. or rail standard lengths, see page A. A

25 RSRZ Type T B Ød (K) 1 h 4 S l 1 Ød1 2 1 RSRZ External dimensions block dimensions (mm) Height idth ength B S l 1 T K E il hole d RSR Z RSR 9Z RSR Z RSR Z otes: odels affixed with an feature excellent corrosion and environmental resistance, as their blocks, rails, and balls are made of stainless steel. e can provide models with stainlesssteel end plates. If you require these, contact us. or modelnumber coding, see page A. or load ratings in various directions, see page A1. A8

26 AIV B 4 S l (E) 1 T (K) 1 h Ød1 2 1 RSRZ Unit: mm rail dimensions Basic load rating ass Grease nipple d 1 d 2 h k k block kg rail kg/m PB or permissible moments A, B, and, see page A2. or rail standard lengths, see page A. A9