Hydraulic Motor (Radial Piston, Multi-Stroke)

Transcription

1 Industrial Hydraulics Electric Drives and Controls inear Motion and ssembly Technologies Pneumatics Service utomation Mobile Hydraulics Hydraulic Motor (Radial Piston, Multi-Stroke) RE 5 207/02.98 /0 Replaces: 0.97 Type MCR 0 Size 7 to Series X Maximum operating pressure 450 bar Maximum displ. volume cm Maximum output torque 27 Nm H/ 287 Type MCR 0 F...F250Z-X/0M... Type MCR 0 F...F250Z-X/7M... Type MCR 0 F...F250Z-X/C7.M... Contents Features Description Page Features Cross-section, Function 2, Ordering codes, symbols Technical data 4, 5 Permitted radial and axial force on drive shaft 6 Unit dimensions: Flange housing C 7 Flange housing F 8 Flange housing D 9 Holding and travel brake 0 Compact, robust construction Smooth running even at very low speeds ow noise Reversible Sealed taper roller bearings High radial forces permitted on the output shaft Shaft seal up to 0 bar vailable with optional built-on holding (multi-disc) brake or dynamic (drum) brake switchable free-running half displacement volume for open and closed circuit operation

2 2/0 osch Rexroth G Mobile Hydraulics MCR 0 RE 5 207/02.98 Cross-section, Function D 2 D 7 D E Hydraulic motors type MCR are radial piston motors with a rotating shaft. Construction Two part housing (; 2), rotor piston assembly (; 4) cam (5), output shaft (6) and control (7) Transmission The rotor (4) is connected to the shaft (6) by means of splines. The pistons () are arranged radially in the rotor (4) and are supported on the cam plate (5) by means of rollers. Torque generation Feed Return Working stroke Exhaust stroke The number of working and return strokes per piston corresponds to the number of lobes on the cam. Control The cylinder chambers (E) are connected to ports and via the axial bores and the annular passages (D). earings Tapered roller bearings are capable of absorbing high axial and radial forces. Freewheeling If the two ports and are connected with no pressure loading and a pressure of 2 bar is simultaneously applied to the housing by way of port "", the pistons will be forced into the rotary piston assembly. The rollers will no longer be lying against the cam curve and it will be possible for the end of the shaft to be rotated freely. Switching to half displacement volume On certain radial piston motor models the displacement volume can be halved. This happens when, at working stroke, only alternate pistons are supplied with hydraulic fluid via a valve in the control. The remaining pistons are connected to the discharge side of the motor. The motor operates at double speed but half torque. rake mounting Holding brake (disc brake) 2 Travel brake (drum brake) Mounting: by way of control housing (2) and through-drive facility. rake application: If the pressure in the annular area (9) fails to reach a certain pressure, the elleville washer (0) will compress the disc package (). Release of holding brake: If the pressure in the annular area (9) exceeds the required level, the brake piston (2) is pushed against the elleville washer (0). The load is taken off the multidisc package () and the holding break released. Mounting: directly on drive shaft (6) and flange housing (). Operation of brake: hydraulic for dynamic braking mechanical as holding brake

3 RE 5 207/02.98 MCR 0 Mobile Hydraulics osch Rexroth G /0 Function Closed circuit The minimum inlet pressure should be adapted to take account of operating conditions, noting among other points the following: pressure at idle, flow resistance, negative torque. The feed pump minimum flow should be adapted to take account of operating conditions. Ordering codes Open circuit The minimum inlet pressure should be adapted to take account of operating conditions, noting for example: pressure at idle, flow resistance, negative torque. The output pressure must be at least 2 bar higher than pressure in the housing. Where motors are connected in series please consult the manufacturer. MCR 0 Z X X M * Frame size Frame size 0 = 0 Flange housing Short motor = C Wheel motor = F Flange motor = D Size/displacement volume V Size 7 = 7 cm = 7 Size 9 = 9 cm = 9 Size 20 = 20 cm = 20 Size 250 = 250 cm = 250 Size = cm = Single shaft end With flange Ø 250 = F250 ) Parallel with key Ø 60 = 60 2; ) Without 2nd shaft end = Z Series nos. Series 0 to 9 = X (0 to 9, externally interchangeable) ) Only with flange housing C or F 2 ) Only with flange housing D ) Max. permitted pressure differential p = 250 bar 4 ) Only with flange housing F Further details in clear text Studs without studs No code = /S = with studs for wheel mounting Connections / = Pipe thread to ISO 228/ /42= UNF-SE-thread Switchable displacement No code = not switchable 2R = switchable, preferred rotation c/w 2 = switchable, preferred rotation a/cw Seals M = NR seals suitable for mineral oil to DIN (H, HP) 0 = 7 = 4 ) C7R = 4 ) C7 = rake mounting no brake hydraulically released holding brake (spring pressure disc brake) travel brake (drum brake) for right hand side of vehicle, see fig., p. 9 travel brake (drum brake) for left hand side of vehicle, see fig., p. 9 Symbols 2-speed motor X Motor with holding brake Z Motor with travel brake

4 4/0 osch Rexroth G Mobile Hydraulics MCR 0 RE 5 207/02.98 Technical data (For applications outside these parameters please consult us) General Type Radial piston motor Description Radia piston multi-disc motor, switchable displacement Model description MCR 0... Type of mounting Flange mounting; face mounting Connections Threaded or flanged Mounting position Optional Shaft loading See page 6 Rotation clockwise/anti-clockwise - reversible Frame size 0 Size Displacement V cm Flow n = 00 rpm/00 bar q V /min 79 95,5 26,5 6,5 Output torque ; 7 ) specific torque T Nm (at p = 00 bar) peak torque T Nm Output speed ; 7 ) min. speed n rpm 5 to 0 for smooth running, depending on application max. speed n rpm freewheeling speed n rpm 0 Output power ; 7 ) continuous power P kw Weight motor m kg 69 motor with holding brake m kg 8 motor with travel brake m kg 92 Hydraulic Nominal pressure p bar 250 Pressure differential, cont. 2; 6; 7; 8 ) p for mineral oil (H, HP) bar 250 Pressure differential, peak ; 6; 7; 8 ) p for mineral oil (H, HP) bar Inlet pressure 6 ) Port or p bar Suated pressure 4; 6 ) Port + p bar Case drain pressure, max. p max bar 0 Switching pressure (displacement switching) bar 0 to 0 Hydraulic fluid 5 ) Mineral oil (H, HP) to DIN Hydraulic fluid temperature range ϑ C 20 to + Viscosity range ν 2 /s 0 to 2000 Fluid cleanliness: Maximum permissible degree of contamination of fluid to NS 68 Class 9. We therefore recoend a filter with a minimum retention rate of ß rake Holding brake (disc brake) Holding torque T Nm 7000 Release pressure p bar min. 5; max. 0 Travel brake (drum brake) see table page 0 ) The values given apply after 00 hours run-in time 2 ) Continuous operation ) Peak values may occur for a maximum duration of one second only within an operating minute 4 ) We recoend p min = 5 bar in the return line 5 ) Environmentally-friendly fluids HETG, HEPG, HEES to RE ) When operating motors in series please consult our technical office 7 ) Warning: When running the motor in (min. 20 hours) note that : motor should not be run unloaded at more than 50 % maximum speed. 8 ) For single shaft end "60" max. permissible pressure differential p = 250 bar

5 RE 5 207/02.98 MCR 0 Mobile Hydraulics osch Rexroth G 5/0 Technical data (Mean values, measured at ν = 46 2 /s and ϑ = 45 C) Notes on technical data T = Torque in Nm q V = Inlet flow in /min q V = Case drain flow in /min ll torques apply to run-in motors (see note p. 4, footnote 7) For half displacement mode multiply torque- and q V -values by 0.5. The torque values at half displacement do not apply to both directions of rotation but only to the preferred direction of rotation marked (see pp. 7-9). Size Speed n in rpm T Nm Pressure differential p p in bar 00 q V /min 0, 9,8 9,47 79,00 8,20,00 2,09 6,7 26,69 89,0 q V /min 0,5 0,5 0,24 0,50 0,60 0,50 0,56 0,6 0,76 0,90 T Nm q V /min 0,60 20,0 9, 79,50 8,8 2,86,0 64,6 27,82 q V /min 0,0 0,0 0, 0,75 0,9,4,44,45,46 T Nm q V /min 0, 20,0,00,00 4,08 4,08 66,6 q V /min 0, 0, 0,50,00 2,04 2,0 2,6 T Nm q V /min, 20,90, 5,68 5, 67,5 q V /min 0,70 0,70 0,90 2,84 2,92,00 T Nm q V /min,6 2,0 4,00 q V /min 0,8 0,8,00 Size 9 Speed n in rpm Pressure differential p p in bar T Nm q V /min,00 2, 47,47 95,00 42,20,00 4,6 68,78 6,76 q V /min 0,5 0,5 0,24 0,50 0,60 0,50 0,56 0,6 0,76 T /min q V /min 0,60 24,0 47, 95,50 2,86 5,56 69,68 7,9 q V /min 0,0 0,0 0, 0,75,4,44,45,46 T Nm q V /min 0, 24,0 48,00 4,08 6,64 7,24 q V /min 0, 0, 0,50 2,04 2,0 2,6 T Nm q V /min, 24,90 48, 5,68 7,67 72,50 q V /min 0,70 0,70 0,90 2,84 2,92,00 T Nm q V /min,60 25,0 49,00 q V /min 0, 0,,00 Size 20 Speed n in rpm Pressure differential p p in bar T Nm q V /min,00 28,82 57,9,62 69, q V /min 0,50 0,56 0,6 0,76 0,90 T Nm q V /min 2,86 29,76 58,07 4,7 q V /min,4,44,45,46 T Nm q V /min 4,08 0,76 59,49 q V /min 2,04 2,0 2,6 T Nm q V /min 5,68,76 60,87 q V /min 2,84 2,92,00

6 6/0 osch Rexroth G Mobile Hydraulics MCR 0 RE 5 207/02.98 Permitted radial force F R and axial force F on output shaft Measured at a speed of n = 50 rpm, pressure differential p = 250 bar + F max (F R = 0) = N F max (F R = 0) = 0 0 N F R + F max (F R = 0) = N F max (F R = 0) = N F R Shaft end F 250 Flange housing C FR in kn NG Size 7 7 NG Size Shaft end 60 Flange housing D FR in kn NG Size 7 7 NG Size Offset in Offset in + F max (F R = 0) = N F max (F R = 0) = N + F max (F R = 0) = N F max (F R = 0) = N F R F R Shaft end F 250 Flange housing F FR in kn NG Size 7 7 NG Size Shaft end F 250 Flange housing F Travel brake C.R FR in kn NG Size 7 7 NG Size Offset in Offset in

7 Ø 205 RE 5 207/02.98 MCR 0 Mobile Hydraulics osch Rexroth G 7/0 Unit dimensions (in ) Flange housing: ordering code "C" +0,25 0 x Ø 7,5-0,0 6 x Ø 20 +0,050 0,025 R, ,5 74,5 54,5 4 25, D S Ø 00 Ø 5 Ø 250 Ø ,2 Ø 264-0,25 X 08,5 0-0,2 Ø 25,0 25 R Ø 262 Port Threaded dimension Ordering code "" Ordering code "42", /4 SE, F /2"SP /4-6 SE X /8"SP 9/6-8 SE Port ; (Inlet, output) 2 Case drain port Filler port F, may also be used as drain port 4 Pilot oil port X for displacement switching, ordering code..2.. or..2r.. (Switching pressure p = 0 to 0 bar) 5 Shaft end with flange, ordering code "F250" 6 Studs M8 x.5 with nut, for securing wheel Ordering code../s /S.. Rotation (viewed on output shaft) Standard model Switchable (preferred rotation) Ordering code..2.. Ordering code..2r..

8 Ø 205 8/0 osch Rexroth G Mobile Hydraulics MCR 0 RE 5 207/02.98 Unit dimensions (in ) Flange housing : Ordering code "F" 0 x Ø 7,5 +0,25-0,0 6 x Ø 20 +0,050 0,025 R,2 5 5 R2, ,5 74,5 54,5 4 25,5 2 F 98 D S Ø 00 Ø 5 Ø 250 Ø ,2 Ø 62 Ø 264-0,25 X 08,5 0-0,2 Ø 25, R 7, Ø 262 Port Threaded dimension Ordering code "" Ordering code "42", /4 SE, F /2"SP /4-6 SE X /8"SP 9/6-8 SE Port ; (inlet, outlet) 2 Case drain port Filler port F, may also be used as drain port 4 Pilot oil port X for displacement switching, ordering code..2.. or..2r.. (Switching pressure p = 0 to 0 bar) 5 Shaft end with flange, ordering code "F250" 6 Studs M8 x.5 with nut, for securing wheel Ordering code../s /S.. Rotation (viewed on output shaft) Standard design Switchable (preferred rotation) Ordering code..2.. Ordering code..2r..

9 RE 5 207/02.98 MCR 0 Mobile Hydraulics osch Rexroth G 9/0 Unit dimensions (in ) Flange housing: ordering code "D" , ,5 9 2 F 98 +0,0 +0,0 Ø ,4 Ø 52,4-0,05 Ø 264-0,25 Ø 08,5 Ø 25-0, ,5 24,5 X 4 4 x Ø 20,5 +0, Port Threaded dimension Ordering code "" Ordering code "42", /4 SE, F /2"SP /4-6 SE X /2"SP 9/6-8 SE Port ; (inlet, outlet) 2 Case drain port Filler port F, may also be used as drain port 4 Pilot oil port X for displacement switching, ordering code..2.. or..2r.. (Switching pressure p = 0 to 0 bar) 5 Parallel shaft end Ø 60 with key. ordering code "60 Warning: max. pressure differential p = 250 bar Rotation (viewed on output shaft) Standard design Switchable (preferred rotation) Ordering code..2.. Ordering code..2r..

10 Ø 50 Ø 4 Ø 205 0/0 osch Rexroth G Mobile Hydraulics MCR 0 RE 5 207/02.98 Unit dimensions: Holding brake (disc brake, in ) 8 95,6 Port Threaded dimension Ordering Ordering code / code /42 Z /8"SP 9/6-8 SE Item 9 M24 M24 Pipe thread (SP) to ISO 228/ Flange housing C 64,5 F 95,5 24-0,5 29 Z Ø 25 7 Holding brake (disc brake) Ordering code 7 8 Release port Z 9 Threaded bore for emergency mechanical release of holding brake 9 7 Unit dimensions: Travel brake (drum brake, in ) ,5 24 M 4 x,5 2 M Travel brake as parking brake Travel brake Holding torque Tension raking torque Port static brake cable dynamic 4700 Nm 7 N 4700 Nm 89 bar 6500 Nm 26 N 6500 Nm 22 bar 6 8 studs M20 with nut for securing wheel 0 Travel brake (drum brake) ordering code C7R 9 raking cable (owden cable), the brake illustrated is for right hand side of vehicle: the left hand side brake is a mirror image of this (ordering code C7 ) see illustration left 2 rake cable length rake port: p max = 22 bar left hand side of vehicle Travel direction right hand side of vehicle osch Rexroth G Mobile Hydraulics Zum Eisengießer 9786 ohr am Main, Germany Telefon +49 (0) Telefax +49 (0) info.brm-mc@boschrexroth.de osch Rexroth imited Mobile Hydraulics-Manufacturing Viewfield G-Glenrothes, Fife KY6 2RD Telefon +44 (592) Telefax +44 (592) by osch Rexroth G, Mobile Hydraulics, D-978 ohr am Main ll rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated using electronic systems, in any form or by any means, without the prior written authorisation of osch Rexroth G. In the event of contravention of the above provisions, the contravening party is obliged to pay compensation. The data specified above only serves to describe the product. No statements concerning a certain condition or suitability for a certain application can be derived from our information.the details stated do not release you from the responsibility for carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing.