MMA Hydraulic Cylinders

Transcription

1 MMA Hydraulic Cylinders 'Mill Type' roundline cylinders for working pressures up to bar

2 Catalogue HY07-0/UK Introduction Introduction The heavy duty series MMA cylinder has been designed for service in steel mills and in other arduous applications where a rugged, dependable cylinder is required. In addition to the standard cylinders featured in this catalogue, MMA cylinders can be designed and manufactured to suit individual customer requirements. Standard Specifications Heavy Duty construction Styles and dimensions to: CETOP RP73H, ISO 60, DIN 4 333, AFNOR NF E48-05, VW 39D 9 Rated pressure: bar Fatigue-free at the rated pressure Hydraulic mineral oil other fluids on request Temperature range of standard seals: -0 C to + C Construction: head and cap bolted to heavy steel flanges sizes: mm to 30mm Piston rod diameters: 3mm to 0mm Cushioning optional at both ends Air bleeds optional at both ends Tested in accordance with ISO 000 : 00 Parker committed to your success Parker Hannifin is the global leader in motion and control technologies. We employ more than 58,000 people in 48 countries, providing our customers with technical excellence and first class customer service. Parker is the world's largest supplier of hydraulic cylinders for industrial applications. When you partner with Parker, you gain access to a vast range of resources designed to increase your productivity and profitability. Contents Page Design Features and Benefits 3 Optional Features 4 Servicing Features 4 Dimensions Round Flange Mountings 5 Dimensions Pivot Mountings 6 Dimensions Trunnion Mountings 7 Dimensions Foot Mountings 8 Piston Ends 8 Accessories 0 Mounting Information 3 Cylinder Masses 3, 9 Selecting the Cylinder Diameter 4 Selecting the Piston 5 Long Stroke Cylinders 6 Stop Tubes 6 Ports 7, 3 Cushioning 8 Seals and Fluids 0 Replacement Parts and Service How to Order Cylinders 3 3-D CAD New 3-D CAD software simplifies the process of selecting and drawing a cylinder, saving time and ensuring the accuracy of the finished design. Scan the QR code to view MMA cylinders on line at or contact your local Sales Office see rear cover. CAD drawings Custom solutions Application guidance Maintenance information Product updates Other language content Access to other Parker products and services WARNING USER RESPONSIBILITY FAILURE OR IMPROPER SELECTION OR IMPROPER USE OF THE PRODUCTS DESCRIBED HEREIN OR RELATED ITEMS CAN CAUSE DEATH, PERSONAL INJURY AND PROPERTY DAMAGE. This document and other information from Parker-Hannifin Corporation, its subsidiaries and authorized distributors provide product or system options for further investigation by users having technical expertise. The user, through its own analysis and testing, is solely responsible for making the final selection of the system and components and assuring that all performance, endurance, maintenance, safety and warning requirements of the application are met. The user must analyze all aspects of the application, follow applicable industry standards, and follow the information concerning the product in the current product catalog and in any other materials provided from Parker or its subsidiaries or authorized distributors. To the extent that Parker or its subsidiaries or authorized distributors provide component or system options based upon data or specifications provided by the user, the user is responsible for determining that such data and specifications are suitable and sufficient for all applications and reasonably foreseeable uses of the components or systems. Offer of Sale Please contact your Parker representation for a detailed 'Offer of Sale'. Parker Hannifin

3 Catalogue HY07-0/UK Design Features and Benefits Piston The piston rod is manufactured from precision ground, high tensile carbon alloy steel, hard chrome plated and polished to 0. m. Piston rods up to 40mm in diameter are induction case hardened to Rockwell C54 minimum before chrome plating. This provides a dent resistant surface, resulting in improved seal life. Piston rods of 60mm diameter and above can be case hardened on request. All rod and piston assemblies are designed to be fatigue free at full rated pressure. Head and Cap Retention The head and cap are bolted to heavy steel flanges, which are retained by threads at each end of the cylinder body. The resulting assembly is fatigue-free at its imum rated pressure. 3 Cylinder Body The heavy wall steel tubing is honed to a high surface finish, to minimise internal friction and prolong seal life. 4 & 5 Head and Cap Ends The head and cap are machined from steel and located into the cylinder body's internal diameter for added strength and precise alignment. To ensure leak-free performance, both the head and cap are sealed by 'O' rings which, in turn, are protected by antiextrusion rings. 6 & 7 Cushioning Optional cushions at the head and cap are progressive in action, providing controlled deceleration which reduces noise and shock loading, and prolongs machine life. The head end cushion is a self-centring sleeve, while the polished cap end spear is an integral part of the piston rod. Needle valves are provided at both ends of the cylinder for precise cushion adjustment, and are recessed and retained so that they cannot be inadvertently removed. Check valves at the head and cap ends of the cylinder minimize restriction to the start of a stroke, permitting full power and fast cycle times. The head end check valve is incorporated into the fully floating cushion sleeve, while the cap end employs a floating bronze cushion bush. 8 Gland and Bearings Seals are housed in a corrosion-resistant steel gland, featuring heavy duty polymer bearing rings to resist side loadings. Wide separation of these rings reduces bearing stresses, imising the service life of the bearing. On bore sizes up to 00mm the rod gland is threaded into the head as illustrated above while, on larger bore sizes, the rod gland is bolted to the head. The polymer bearing rings, with the rod seals, are easily replaced on removal of the rod gland, and all components may be serviced without further disassembly of the cylinder. 9 & 0 Gland and Piston Seals The gland seals provide efficient retention of pressurized fluid while preventing the ingress of contaminants. A variety of gland and piston seal options is available, to suit different applications see page 4. MMA cylinders can also be designed and manufactured with seals to suit individual customer requirements. Please contact the factory with details of the application. Body End Seals To ensure leak-free performance, body end seals and gland/head seals are of radial construction, avoiding the problems of 'nibbling' and early failure associated with face-type seals. 3 Parker Hannifin

4 Catalogue HY07-0/UK Optional Features Gland and Piston Seal Options See Illustrations, page Standard Option The standard seals fitted to MMA cylinders provide excellent low speed and break-out performance and deliver exceptional working life in high cycle applications. They are suitable for use with Group fluids (see page 0) and may be used for piston speeds up to 0.5m/s. Standard gland seals employ a polyurethane lipseal and a PTFE stepped seal. The piston is fitted with a heavy duty filled polymer seal and heavy duty wear rings. The wear rings prevent contact between the piston and cylinder bore and protect the piston seal from contaminants. Low Friction Option Low friction seals are suitable for applications where very low friction and an absence of stick-slip are important. They are not suitable for holding loads in a fixed position. Low friction seals are available for use with all fluid groups and are suitable for piston speeds up to m/s. Low Friction gland seals comprise two low friction PTFE stepped seals and a heavy duty wiperseal, while the pistons employ a PTFE seal and PTFE wear rings. Chevron Option The combination of chevron gland and chevron piston seals is designed to withstand harsh environments such as steel mills. They are suitable for use with all fluid groups and for piston speeds up to 0.5m/s, and may be used to hold a load in position. Chevron gland seals have a corrosion-resistant steel retainer, and a separate removable steel housing which retains the inner bearing rings. A heavy duty wiper seal prevents the ingress of contaminants. Chevron pistons feature a two-piece piston with a wide bearing ring mounted between chevron seals. Load Holding Option Suitable for applications where loads are required to be held in position, the Load Holding option combines the low friction performance and long life of the standard gland seals with the rugged qualities of the chevron piston seal. The load holding option may be used for piston speeds up to 0.5m/s and is suitable for use with Group fluids. Air Bleeds Available as an option at both ends, air bleeds are recessed into the head and cap and retained so they cannot be inadvertently removed. The air bleed location, in relation to the supply port location, must be specified on the order see page 3. Gland Drains The tendency of hydraulic fluid to adhere to the piston rod can result in an accumulation of fluid in the cavity between the seals under certain operating conditions. This may occur with long stroke cylinders, where there is a constant back pressure as in differential circuitry, or where the ratio of the extend speed to the retract speed is greater than to. Position Switches and Feedback Devices Non-contacting position switches and linear position transducers of various types may be fitted to MMA series cylinders. Please contact the factory for further details. End Bellows Exposed rod surfaces that are subjected to air hardening contaminants should be protected by rod end bellows. Longer rod extensions are required to accommodate their collapsed length please consult the factory for details. Material As an alternative to the normal piston rod material, stainless steel and other special materials and finishes can be supplied. Metallic Wipers For applications where contaminants may adhere to the extended piston rod and thereby cause premature failure of gland seals, the use of a metallic rod wiper in place of the standard wiper seal is recommended. Special Designs Alternative sealing arrangements, special mounting styles, higher or lower rated pressure designs, welded cap ends to reduce overall length (non-cushioned only), larger bores and alternative rod sizes are just a few of the special requirements which can be accommodated by our design and engineering staff. Marine Environments MMA cylinders can be supplied with modifications to material and paint specifications which make them suitable for operation in a marine environment. Please consult the factory. Servicing Features The MMA series has been designed to make maintenance as easy as possible, by incorporating the following design features: Removable Gland bearing and rod seals can be replaced without completely dismantling the cylinder. For chevron glands, a thread is machined on the outside diameter of the seal housing to assist extraction. Chamfers at both ends of the cylinder body ease assembly of the head and cap and insertion of the piston seals. Retaining flanges are removable, allowing separate replacement of the cylinder body. Flanges are spaced from the head and cap to allow the bolts to be sawn through in the event of severe damage or corrosion. High tensile bolts are used for ease of maintenance. Gland drains should be piped back to the fluid reservoir, which should be located below the level of the cylinder. 4 Parker Hannifin

5 Catalogue HY07-0/UK Round Flange Mountings EE / Y ZB + stroke PJ + stroke FC p.c.d. 4 B D Style MF3 Head Circular Flange FB 3 F VD UC WC Accurate location of 'B' provided as standard on model MF3 only. EE / Y PJ + stroke FC p.c.d. 4 BA D Style MF4 Cap Circular Flange FB 3 UC ZP + stroke F Dimensions MF3 and MF4 See also End Dimensions, page 9 No. B f8 & BA H8 D EE (BSPP) F FB FC UC VD min WC Y Min. Stroke PJ + Stroke ZB ZP G / G 3 / G 3 / G G G / G / G / G / G / G Parker Hannifin

6 Catalogue HY07-0/UK Pivot Mountings EE D Y PJ + stroke CD 4 MR Style MP3 Cap Fixed Eye 3 EW BW XC + stroke L LX EE D Y PJ + stroke CX 4 4 MS 4 Style MP5 Cap Fixed Eye with Spherical Bearing 3 EX BX XO + stroke LT LX Dimensions MP3 and MP No BW & BX CD H9 & CX H7 See also End Dimensions, page 9 D EE (BSPP) EW h & EX h L & LT LX MR & MS Y Min. Stroke PJ + Stroke G / G 3 / G 3 / G G G / G / G / G / G / G XC & XO 6 Parker Hannifin

7 Catalogue HY07-0/UK Trunnion Mounting Y PJ + stroke EE BD R3 TD 4 UV D Style MT4 Intermediate Trunnion TL 3 TM TL Note: XV Dimension to be specified by customer. Where minimum dimension is unacceptable, please consult factory. XV ZB + stroke Dimensions MT4 See also End Dimensions, page 9 and Trunnion Blocks, page 3 No. BD D EE (BSPP) TD f8 TL TM h3 UV XV min Y Min. Stroke PJ + Stroke XV ZB G / G 3 / G 3 / G G G / G / G / G / G / G Parker Hannifin

8 Catalogue HY07-0/UK Foot Mounting, Piston End Data EE Y PJ + stroke SD mm 4 LH D Style MS Foot Mounting (Not to ISO 60) SB 3 TS US ST Note: The MS mounting should only be used where the stroke is at least half of the bore diameter or where the cylinder operates below 60 bar. XS SE SC SC SS + stroke ZB + stroke SE Dimensions MS See also End Dimensions, page 9 No. D EE (BSPP) LH h0 SB H3 SC SD SE ST TS US XS Y Min. Stroke PJ + Stroke SS ZB G / G 3 / G 3 / G G G / G / G / G / G / G Mounting holes offset from centre line Piston End Styles MMA cylinders are available with standard metric male and female rod ends to ISO They can also be supplied with other rod end threads, eg: ISO metric coarse, Unified, British Standard etc., or to the customer's special requirements. End Codes 4 and 9 Each cylinder bore size is offered with two diameters of piston rod the smaller is designated no. and the larger, no.. The standard male rod end threads, to ISO 60, are designated code 4 and female threads are designated code 9. Female threads are only available with the no. rod size. End Code 3 Non-standard rod ends are designated code 3. Orders for these should include dimensioned sketches and descriptions, showing dimensions KK or KF, A or AF, rod stand-out W and the thread form required. Wrench Flats Piston rods up to and including mm in diameter are supplied with flats for a spanner wrench while rods above mm in diameter feature four drilled holes to accept a pin wrench. See dimension D in the table on page 9. 8 Parker Hannifin

9 Catalogue HY07-0/UK Piston End Data End Code 4 mm - 00mm D wrench flats K C End Code 4 5mm - 30mm D wrench flats or pin wrench holes K C VE NA KK MM NA KK MM A W A W WF End Code 9 mm - 00mm D wrench flats K C End Code 9 5mm - 30mm D wrench flats or pin wrench holes K C VE NA KF MM NA KF MM W AF W AF WF End Dimensions See also Cylinder Dimensions, pages 5-8 No. MM A & AF C D K KK Code 4 KF Code 9 NA VE W WF M7x M7x M33x M33x M4x M4x M48x M48x M64x3 M64x x 4 3 M7x3 M7x x 4 0 x 4 35 Mx3 Mx x 4 0 x 4 40 Mx3 Mx x 4 x 4 40 M00x3 M00x x 4 5 x 4 4 M5x4 M5x x 4 5 x 4 48 M60x4 M60x Parker Hannifin

10 Catalogue HY07-0/UK Accessories Accessory Selection The accessories and corresponding mounting brackets supplied for use at the piston rod end of a cylinder are selected by reference to the rod end thread, shown on page 9, while the same mounting brackets, when used at the cap end of pivot mounted cylinders, are selected by pin size see dimensions CD and CX on page 6. End clevis and pivot pin page 0 eye with plain bearing page Clevis bracket and pivot pin page eye with spherical bearing page Mounting bracket and pivot pin page Cap End Clevis bracket and pivot pin for style MP3 and MP5 mountings page Mounting bracket and pivot pin for style MP3 and MP5 mountings page Cylinder Body Trunnion blocks for style MT4 mounting page 3 Clevis and Pivot Pin AP ISO 83 CL CM ER CK LE CE KK B For larger sizes, please consult factory. Part No. B CE js3 CK H9/f8 CL h6 CM A3 ER KK LE min Mass kg Nominal Force kn M7x M33x M4x M48x M64x Parker Hannifin

11 Catalogue HY07-0/UK Accessories Eye with Plain Bearing AP4 ISO 83 C ER EM BX LE CK CA AV KK N Part No. AV min BX C CA JS3 CK H9 EM h M7x M33x M4x M48x M64x Mx M00x M5x M60x ER KK LE min N Mass kg Nominal Force kn Clevis Bracket and Pivot Pin AB4 ISO 83 Form A CL CM CK MR HB LE FL RC UR TB UH For larger sizes, please consult factory. Part No. CK H9/m6 CL h6 CM A3 FL JS HB H3 LE min MR RC JS4 TB JS4 UH UR Mass kg Nominal Force kn Parker Hannifin

12 Catalogue HY07-0/UK Accessories Eye with Spherical Bearing AP6 ISO 83 C EF EN EU LF CN 4 CH AV KK N Part No. AV min C CH js3 CN H7 EF EN h M7x M33x M4x M48x M64x Mx M00x M5x M60x EU KK LF min N Mass kg Nominal Force kn Mounting Bracket and Pivot Pin AB3 ISO 83 Form B CL CM MR CK LE FL KC RF UK CO FO FG RG UX HB For larger sizes, please consult factory. Part No. CK H9/m6 CL h6 CM A3 CO N9 FG JS4 FL js3 FO JS4 HB H KC +0.3 LE min MR RF js3 RG js3 UK UX Mass kg Nominal Force kn Parker Hannifin

13 Catalogue HY07-0/UK Accessories Trunnion Block AT4 ISO 83 CR FK HB FN Trunnions On the 30mm bore cylinder, the trunnion is welded to the cylinder body. On all other bore sizes, the trunnion assembly is threaded to the cylinder body and secured with a locking ring. If a different arrangement is needed to suit a particular application, please consult the factory. FS NH KC TH UL CO Trunnions require lubricated pillow blocks with minimum bearing clearances. Blocks should be mounted and aligned to eliminate bending moments on the trunnion pins. Part No. CO N9 CR H7 FK JS FN FS js3 HB H3 KC +0.3 NH TH js3 UL Mass kg Nominal Force kn For larger sizes, please consult factory. Cylinder Mounting Information Mounting Bolts It is recommended that mounting bolts with a strength to ISO 898/ grade.9 should be used for fixing cylinders to the machine or base. Mounting bolts should be torque loaded to their manufacturer's recommended figures. Head and Cap Retention Bolts The head and cap retention bolts on cylinders are torque loaded on assembly in the factory. If damage or corrosion is found on removal, the old bolts must be discarded and replacement bolts with a minimum strength to ISO 898/ grade.9 must be fitted. Head and cap bolts should always be tightened progressively in a diagonal sequence and torque loaded to the figures shown in the table. Flange Bolts Torque Load (Nm) Bolt Size 6-8 M M0-8 M M4 Spherical Bearings All spherical bearings should be re-packed with grease periodically. In unusual or severe working conditions, consult the factory regarding the suitability of the bearing chosen M M M -70 M M33 Cylinder Masses No. Mounting Styles at Zero Stroke, in kg MF3 & MF MP3 & MP MT MS per 0mm Stroke kg Where applicable, accessory masses can be added to give a gross mass see page Parker Hannifin

14 Catalogue HY07-0/UK Cylinder Selection Selecting the Cylinder Diameter Push Force If the piston rod is in compression, use the Push Force table below.. Identify the operating pressure closest to that required.. In the same column, identify the force required to move the load (always rounding up). 3. In the same row, look along to the cylinder bore required. If the cylinder envelope dimensions are too large, increase the operating pressure, if possible, and repeat the exercise. Cylinder Area mm bar Cylinder Push Force in kn 00 bar bar 00 bar inphorm For more comprehensive information on the calculation of cylinder bore size required, please refer to the an cylinder inphorm selection programme HY07-60/Eur. bar Pull Force If the piston rod is in tension, use the Reduction in Cylinder Push Force table below. To determine the pull force:. Follow the procedure for Push Force applications, as described.. Using the Reduction in Cylinder Push Force table below, establish the force indicated according to the rod diameter and pressure selected. 3. Deduct this from the original push force. The resulting figure is the net force available to move the load. If this force is not large enough, repeat the process again but increase the system operating pressure or cylinder diameter if possible. If in doubt, please contact our design engineers. Piston Piston Area mm Reduction in Cylinder Push Force in kn bar 00 bar bar 00 bar bar Parker Hannifin

15 Catalogue HY07-0/UK Cylinder Selection Selecting the Piston To select a piston rod for thrust (push) conditions:. Determine the type of mounting style and rod end connection to be used. From the Stroke Factor Selection table below, identify which factor corresponds to the application.. Using this stroke factor, determine the basic length from the equation: Basic Length = Net Stroke x Stroke Factor (The Piston Selection Chart on page 6 applies to piston rods with standard rod extensions beyond the face of the gland retainer. For rod extensions greater than standard, add the increase to the stroke to arrive at the basic length.) 3. Find the load imposed for the thrust application by multiplying the full bore area of the cylinder by the system pressure, or by referring to the Push and Pull Force tables on page Using the Piston Selection Chart on page 6, look along the values for basic length and thrust as found in and 3 above, and note the point of intersection. The correct piston rod size is read from the diagonally curved line above the point of intersection. For tensile (pull) loads, the rod size is selected by specifying standard cylinders with standard rod diameters and using them at or below the rated pressure. Stroke Factor Selection Cylinder Mounting Style End Connection and Load Guidance Type of Mounting Apply Stroke Factor of MF3 MS Front flange and foot mountings Load is fixed and rigidly guided 0.5 MF3 MS Front flange and foot mountings Load is pivoted and rigidly guided 0.7 MF4 Rear flange mounting Load is fixed and rigidly guided.0 MF4 MT4 Rear flange and trunnion mountings Load is pivoted and rigidly guided.5 MF3 MS Front flange and foot mountings Load is supported but not rigidly guided.0 MP3 MP5 Rear pivot mountings Load is pivoted and rigidly guided.0 MF4 Rear flange mounting Load is supported but not rigidly guided 4.0 MP3 MP5 Rear pivot mountings Load is supported but not rigidly guided 4.0 inphorm For accurate sizing, please refer to the an cylinder inphorm selection programme HY07-60/Eur. 5 Parker Hannifin

16 Catalogue HY07-0/UK Cylinder Selection Piston Selection Chart Diameter (mm) Basic Length (mm) - Log Scale Thrust (kn) - Log Scale Long Strokes and Stop Tubes For tension (pull) loads, the rod size is selected by specifying standard cylinders with standard rod diameters, and using them at or below the rated pressure. For long stroke cylinders under compressive (push) loads, a stop tube should be used to reduce bearing stress. The required length of stop tube is read from the vertical columns on the right of the chart, above, by following the horizontal band within which the point of intersection lies. Note that stop tube requirements differ for fixed and pivot mounted cylinders. When specifying a cylinder with a stop tube, please insert an 'S' (Special) and the net stroke of the cylinder in the order code, and state the length of the stop tube. Note that net stroke is equal to the gross stroke of the cylinder less the length of the stop tube. The gross stroke determines the envelope dimensions of the cylinder. Cushion Sleeve Stop Tube If the required length of stop tube is in the shaded region marked 'consult factory', please submit the following information:. Cylinder mounting style.. end connection and method of guiding load. 3. and stroke required, and length of rod extension (Dimension W, page 9) if greater than standard. 4. Mounting position of cylinder. If at an angle or vertical, specify the direction of the piston rod. 5. Operating pressure of the cylinder if limited to less than the standard pressure for the cylinder selected. 6 Parker Hannifin

17 Catalogue HY07-0/UK Ports Port Size and Piston Speed Fluid velocity in connecting lines should be limited to 5m/s to minimise fluid turbulence, pressure loss and 'water hammer' effects. The tables below show piston speeds for standard and oversize ports and connecting lines where the velocity of fluid is 5m/s. If the desired piston speed results in a fluid flow in excess of 5m/s in connecting lines, larger lines with two ports per cap should be considered. Parker recommends that a flow rate of m/s in connecting lines should not be exceeded. Port Size (BSPP) Flange Port Sizes Standard Cylinder Port of Connecting Lines Cap End Flow in l/min at 5m/s Piston Speed m/s G / G 3 / G 3 / G G G / G / G / G / G / G Port Size (BSPP) Oversize Cylinder Port of Connecting Lines Cap End Flow in l/min at 5m/s Piston Speed m/s G 3 / G G G / G / G / G / G / G / G EA ED FF EB A Port Types In addition to the standard and oversize BSPP ports, metric threaded ports to ISO and ISO 649, and flange ports to ISO 66 can also be supplied see tables below. The ISO 649 port incorporates a raised ring in the spot face for identification. Other flange port styles are available on request. BSPP Standard Port Metric DN Flange 5 bar to 3 bar series M0x.5 to ISO 66 (994) optional bar series BSPP Oversize Port Metric DN Flange G / Mx.5 3 G 3 /4 M7x * G 3 /4 M7x 3 G M33x * G 3 /4 M7x 3 G M33x 9 00 G M33x 9 G /4 M4x 5 5 G M33x 9 G /4 M4x 5 40 G /4 M4x 5 G / M48x 3 60 G /4 M4x 5 G / M48x 3 G /4 M4x 5 G / M48x 3 00 G /4 M4x 5 G / M48x 3 G / M48x 3 G G 3 38 * Consult factory Flange Port Sizes Standard Flange Port DN Flange A EA EB ED FF M8x M0x M0x Mx.75 3 Oversize Flange Port DN Flange A EA EB ED M0x FF M0x Mx M6x Parker Hannifin

18 Catalogue HY07-0/UK Cushioning An Introduction to Cushioning Cushioning is recommended as a means of controlling the deceleration of masses, or for applications where piston speeds are in excess of 0.m/s and the piston will make a full stroke. Cushioning extends cylinder life and reduces undesirable noise and hydraulic shock. Built-in deceleration devices or 'cushions' are optional and can be supplied at the head and cap ends of the cylinder without affecting its envelope or mounting dimensions. Cushions are adjustable via recessed needle valves. Standard Cushioning Ideal cushion performance shows an almost uniform absorption of energy along the cushion's length. Where specified, MMA cylinders use specially profiled cushions, giving a performance which comes close to the ideal in the majority of applications. The head and cap cushion performance for each bore size is illustrated on the charts on page 9. Alternative Forms of Cushioning Special designs can be produced to suit applications where the energy to be absorbed exceeds the performance of the standard cushion. Please consult the factory for details. Cushion Length All MMA cylinder cushions incorporate the longest cushion sleeve and spear that can be provided in the standard envelope without decreasing the rod bearing and piston bearing lengths see table of cushion lengths on page 9. Cushion Calculations The charts on page 9 show the energy absorption capacity for each bore and rod combination at the head (annulus) and the cap (full bore) ends of the cylinder. The charts are valid for piston velocities in the range of m/s. For velocities between 0.3m/s 0.5m/s, the energy values from the charts should be reduced by 5%. For velocities of less than 0.m/s where large masses are involved, and for velocities greater than 0.5m/s, a special cushion profile may be required. Please consult the factory. The cushion capacity of the head end is less than that of the cap, owing to the pressure intensification effect across the piston. The energy absorption capacity of the cushion decreases with drive pressure, which in normal circuits is the relief valve setting. inphorm Cushioning requirements can be calculated automatically for individual cylinder/load combinations using the an cylinder inphorm selection programme HY07-60/Eur. Formulae Cushioning calculations are based on the formula: E = ½mv for horizontal applications. For inclined or vertically downward or upward applications, this is modified to: E = ½mv + mgl x 0-3 x sin for inclined or vertically downward direction of mass; E = ½mv mgl x 0-3 x sin for inclined or vertically upward direction of mass. Where: E = energy absorbed in Joules g = acceleration due to gravity = 9.8m/s v = velocity in metres/second l = length of cushion in millimetres (see page 9) m = mass of load in kilogrammes (including piston and rod, see page 9, and rod end accessories, pages 0-) = angle to horizontal in degrees p = pressure in bar Example The following example shows how to calculate the energy developed by masses moving in a straight line. For non-linear motion, other calculations are required; please V consult the factory. The example assumes that the bore and rod diameters are already appropriate for the application. The effects of friction on the cylinder and load have been ignored. Selected bore/rod = /mm (no. rod) Cushioning at the cap end Pressure = bar Mass = 770 kg Velocity = 0.4m/s = 45 o Sin = 0.7 Cushion length = 45mm E = ½mv + mgl x 0-3 x sin E = 770 x x 9.8 x 45 x E = = 3000 Joules Note: as velocity is greater than 0.3m/s, the energy absorption figures obtained from the charts on page 9 should be reduced by 5% see Cushion Calculations, above. Comparison with the cushioning chart curve for this cylinder shows an energy capacity for the cap end cushion of 0 Joules. Reducing this by 5% gives a capacity of 385 Joules, so the standard cushion can safely decelerate the 3000 Joules in this example. Where cushion performance figures are critical, our engineers can run a computer simulation to determine accurate cushion performance please contact the factory for details. 8 Parker Hannifin

19 Catalogue HY07-0/UK Cushioning Cushion Energy Absorption Data The cushion energy absorption capacity data shown below are based on the imum fatigue-free pressures developed in the cylinder tube. If working life cycle applications of less than 0 6 cycles are envisaged, then greater energy absorption figures can be applied. Please consult the factory if further information is required. Head End, No. Head End, No / / /60 00/5 /0 60/00 40/ 5/ 00/ / /40 / Energy Capacity (Joules) / 00/40 /5 60/0 40/00 5/ 00/70 /56 /45 / Energy Capacity (Joules) Drive Pressure (bar) Drive Pressure (bar) 0 Cap End, No. and No. s Energy Capacity (Joules) Cushion Length, Piston & Mass No Cushion Length Piston & Zero stroke kg per 0mm Stroke kg Drive Pressure (bar) Parker Hannifin

20 Catalogue HY07-0/UK Seals and Fluids Seals and Fluid Data See also Gland and Piston Seal Options, page 4 Fluid Group Seal Materials a combination of: Fluid Medium to ISO 6743/4-98 Piston & Gland Type Temperature Range Nitrile (NBR), PTFE, enhanced polyurethane (AU) Mineral Oil HH, HL, HLP, HLP-D, HM, HV, MIL-H-5606 oil, air, nitrogen All -0 C to + C Nitrile (NBR), PTFE Water glycol (HFC) Chevron and Low Friction -0 C to +60 C 5 Fluorocarbon elastomer (FPM), PTFE Fire resistant fluids based on phosphate esters (HFD-R). Also suitable for hydraulic oil at high temperatures or in hot environments. Not suitable for use with Skydrol. See fluid manufacturer's recommendations. Chevron and Low Friction -0 C to + C 6 Various compounds including nitrile, enhanced polyurethane, fluorocarbon elastomers and PTFE Water Oil in water emulsion 95/5 (HFA) 7 Water in oil emulsion 60/40 (HFB) Chevron and Low Friction Chevron and Low Friction +5 C to +55 C +5 C to +60 C Special Seals A range of seal options is available for the fluid groups listed above see How to Order on page 3. Where required, special seals, in addition to those listed above, can also be supplied. Please insert an S (Special) in the model number and specify the fluid medium when ordering. Group 6 Seal Life Seal life is reduced with High Water Content Fluids (HFA) due to the poor lubricity of the operating medium. Note that seal life also declines as pressure increases. Water Service Special modifications are available for high water content fluids. These include a stainless steel piston rod, and plating of internal surfaces. When ordering, please specify the imum operating pressure or load/speed conditions, as the stainless steel rod is of lower tensile strength than the standard material. Filtration Fluid cleanliness should be in accordance with ISO The quality of filters should be in accordance with the appropriate ISO standards. The rating of the filter media depends on the system components and the application. The minimum required should be class 9/5 to ISO 4406, which equates to 5 (ß0 75) to ISO 457. Warranty Parker Hannifin warrants cylinders modified for water or high water content fluid service to be free of defects in materials or workmanship, but cannot accept responsibility for premature failure caused by excessive wear resulting from lack of lubricity, or where failure is caused by corrosion, electrolysis or mineral deposits within the cylinder. Repairs Although MMA cylinders are designed to make on site maintenance or repairs as easy as possible, some operations should only be carried out in our factory. It is standard policy to fit a cylinder returned to the factory for repair with those replacement parts which are necessary to return it to 'as good as new' condition. Should the condition of the returned cylinder be such that the expense would exceed the cost of a new one, you will be notified. 0 Parker Hannifin

21 Catalogue HY07-0/UK Replacement Parts and Service Service Kits When ordering service kits, please refer to the identification plate on the cylinder body, and supply the following information: Serial Number - - Stroke - Model Number - Fluid Type Key to Part Numbers Head 7 Cap 4a Standard and Low Friction gland 4b Chevron gland 5 Cylinder tube 7 Piston 7a Chevron piston head end 7b Chevron piston cap end 8 Cushion sleeve 9 Front/rear flange 3 Head/cap securing screw 6 O-ring (cylinder body) 3 Energising ring for Low Friction piston seal 3 33 Wear ring for Low Friction piston 34 O-ring back up washer (gland/head) 36 Gland securing screw 37 Chevron rod seal assembly 38 Back up washer Chevron rod seal assembly 39a Wear ring for Chevron gland 39b Wear rings for Chevron gland 40a Wear ring for Standard gland 40b Wear rings for Standard gland 4a Wear ring for Low Friction gland 4b Wear rings for Low Friction gland 4 Chevron piston bearing ring 43 Chevron piston seal assembly /35/36/ a 70a a b 70a 40a 3 40b 4a Gland retainer (secured by screws or threaded) 34 Piston rod single rod, no cushion 35 Piston rod single rod, cushion at head end 36 Piston rod single rod, cushion at cap end 37 Piston rod single rod, cushion at both ends 40 Gland wiperseal 4 Lipseal 45 O-ring (gland/head) 46 O-ring, piston/rod ( off Chevron piston) 47 Back-up washer for cylinder body O-ring 6 55 Piston locking pin 69a Cushion needle valve cartridge sealing washer 70a Cushion needle valve cartridge 73 Floating cushion bush 74 Cushion bush retaining ring 3 Stepseal 4 Pre-load ring for stepseal 3 5 Standard piston seal 6 Energising ring for Standard seal 5 7 Wear ring for Standard piston 3 Low Friction piston seal 7 40 Standard Gland & Seals 4 4a 3 4b Low Friction Gland & Seals a 37 39b Chevron Gland & Seals 4a 4b 46 7a 46 Standard Piston Low Friction Piston 4 43 Chevron Piston b 55 Parker Hannifin

22 Catalogue HY07-0/UK Replacement Parts and Service Contents and Part Numbers of Service Kits See key to part numbers on page. Gland Service Cartridge Kit, Standard and Loadholding Seals Contains items 4a, 40, 4, 45, 3, 4, 34, 40a, and two of 40b. Gland Service Cartridge Kit, Chevron Seals Contains items 4b, 40, 45, 34, 37, 38, 39a, and two of 39b. Gland Service Cartridge Kit, Low Friction Seals Contains items 4a, 40, 45, 34, 4a, and two each of 3, 4, 4b. Gland Service Kit, Standard and Loadholding Seals Contains items 40, 4, 45, 3, 4, 34, 40a, and two of 40b. Gland Service Kit, Chevron Seals Contains items 40, 45, 34, 37, 38, 39a, and two of 39b. Gland Service Kit, Low Friction Seals Contains items 40, 45, 34, 4a, and two each of 3, 4, 4b. Piston Service Kit, Standard Seals Contains items 5, 6, and two of 6, 47 and 7. Piston Service Kit, Chevron and Loadholding Seals Contains items 55, 4, and two each of 6, 46, 47 and 43. Piston Service Kit, Low Friction Seals Contains items 3, 3, and two of 6, 47 and 33. Service Kit Order Codes Glands Optional Seal Groups Ordering The order codes listed for Chevron and Low Friction service kits contain standard, Group seals. To order kits with other classes of seals, see page 0, replace the last digit of the part number shown with the number of the service group required. Eg: RGF0MMA070, containing a Group seal, becomes RGF0MMA0705 when it contains a Group 5 seal. Service Kit Order Codes Piston Standard Seals * Piston Service Kit Chevron & Loadholding Seals Low Friction Seals PN0MMA0 PLL0MMA0 PF0MMA0 PN0MMA0 PLL0MMA0 PF0MMA0 PN0MMA0 PLL0MMA0 PF0MMA0 00 PN00MMA0 PLL00MMA0 PF00MMA0 5 PN5MMA0 PLL5MMA0 PF5MMA0 40 PN40MMA0 PLL40MMA0 PF40MMA0 60 PN60MMA0 PLL60MMA0 PF60MMA0 PNMMA0 PLLMMA0 PFMMA0 00 PN00MMA0 PLL00MMA0 PF00MMA0 PNMMA0 PLLMMA0 PFMMA0 30 PN30MMA0 PLL30MMA0 PF30MMA0 No. Standard & Loadholding Seals * Gland Service Cartridge Kit Chevron Seals Low Friction Seals Standard & Loadholding Seals * Gland Service Kit Chevron Seals Low Friction Seals 3 36 RGN05MMA03 RGN05MMA036 RGLL05MMA03 RGLL05MMA036 RGF05MMA03 RGF05MMA036 RKN05MMA03 RKN05MMA036 RKLL05MMA03 RKLL05MMA036 RKF05MMA03 RKF05MMA RGN06MMA040 RGN06MMA045 RGLL06MMA040 RGLL06MMA045 RGF06MMA040 RGF06MMA045 RKN06MMA040 RKN06MMA045 RKLL06MMA040 RKLL06MMA045 RKF06MMA040 RKF06MMA RGN08MMA0 RGN08MMA056 RGLL08MMA0 RGLL08MMA056 RGF08MMA0 RGF08MMA056 RKN08MMA0 RKN08MMA056 RKLL08MMA0 RKLL08MMA056 RKF08MMA0 RKF08MMA RGN0MMA0 RGN0MMA070 RGLL0MMA0 RGLL0MMA070 RGF0MMA0 RGF0MMA070 RKN0MMA0 RKN0MMA070 RKLL0MMA0 RKLL0MMA070 RKF0MMA0 RKF0MMA070 5 RGNMMA0 RGNMMA0 RGLLMMA0 RGLLMMA0 RGFMMA0 RGFMMA0 RKNMMA0 RKNMMA0 RKLLMMA0 RKLLMMA0 RKFMMA0 RKFMMA RGN4MMA0 RGN4MMA00 RGLL4MMA0 RGLL4MMA00 RGF4MMA0 RGF4MMA00 RKN4MMA0 RKN4MMA00 RKLL4MMA0 RKLL4MMA00 RKF4MMA0 RKF4MMA RGN6MMA00 RGN6MMA0 RGLL6MMA00 RGLL6MMA0 RGF6MMA00 RGF6MMA0 RKN6MMA00 RKN6MMA0 RKLL6MMA00 RKLL6MMA0 RKF6MMA00 RKF6MMA0 0 5 RGN8MMA0 RGN8MMA5 RGLL8MMA0 RGLL8MMA5 RGF8MMA0 RGF8MMA5 RKN8MMA0 RKN8MMA5 RKLL8MMA0 RKLL8MMA5 RKF8MMA0 RKF8MMA RGN0MMA5 RGN0MMA40 RGLL0MMA5 RGLL0MMA40 RGF0MMA5 RGF0MMA40 RKN0MMA5 RKN0MMA40 RKLL0MMA5 RKLL0MMA40 RKF0MMA5 RKF0MMA40 60 RGN5MMA60 RGN5MMA RGLL5MMA60 RGLL5MMA RGF5MMA60 RGF5MMA RKN5MMA60 RKN5MMA RKLL5MMA60 RKLL5MMA RKF5MMA60 RKF5MMA RGN3MMA00 RGN3MMA0 RGLL3MMA00 RGLL3MMA0 RGF3MMA00 RGF3MMA0 RKN3MMA00 RKN3MMA0 RKLL3MMA00 RKLL3MMA0 RKF3MMA00 RKF3MMA0 * Only available with Group seals Parker Hannifin

23 Catalogue HY07-0/UK How To Order C MF3 MMA R N S 4 M C 300 M 44 Mounting Style Ports Special Features Piston End Cushion Cap Page 8 Fluid Medium Air Bleeds Cushion Head Page 8 Series Gland and Piston Type Piston Number Thread Net Stroke Port Positions Code Mounting Style Page MF3 Head Circular Flange 5 MF4 Cap Circular Flange 5 MP3 Cap Fixed Eye 6 MP5 Cap Fixed Eye with Spherical Bearing 6 MT4 Intermediate Trunnion 7 MS Foot Mounting 8 Key Code Port Style Page R BSP Parallel 7 M Metric to ISO Y Metric to ISO P Flange Ports to ISO 66 7 Code Gland & Piston Type Page N Standard (Group fluids only) 4 F Low Friction 4 LL Chevron 4 A Load Holding (Group fluids only) 4 E Special designs 4 Required for basic cylinder Code Special Features Page S Oversized Ports 7 S Special Seals 0 S Stop Tube 6 or to customer specification Indicate optional features or leave blank Code Fluid Page Medium M Group 0 C Group 0 D Group 5 0 A Group 6 0 B Group 7 0 Code Port Position Page Head position -4 3 Cap position -4 3 Code Air Bleed Position Page 4 Head position -4 4, 3 4 Cap position -4 4, 3 00 No air bleeds Code Thread Page M Metric (standard) 8 Code End Style Page 4 Code Code Code 3 (Special) please supply description or drawing 8 Code Number Page no. 5-8 no. 5-8 Ports, Air Bleeds and Cushion Adjustment Location As standard, port location is position, as shown on pages 5 to 8. Cushion adjustment needle valves, where specified, are at position Accessories Please state on order whether accessories are to be assembled to cylinder or supplied separately. 3 Parker Hannifin

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