Summary of Contents for Bosch Rexroth MCR 31 Series
- Page 1 Radial piston motor Series 30, 31, 32, 33 and 41 Instruction manual Replaces: 08.09 RE 15215-01-B/11.2015 English <Ersetzen Sie diese Abbildungsfläche durch Ihre Produktabbildung>...
- Page 2 © This document, as well as the data, specifications and other information set forth in it, are the exclusive property of Bosch Rexroth AG. It may not be reproduced or given to third parties without its consent. The cover shows an example application. The product delivered may differ from the image on the cover.
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Page 3: Table Of Contents
7.4.3 General instructions 7.4.4 Connection to the output shaft 7.4.5 Assembly of the speed sensor 7.4.6 Completing installation 7.4.7 Hydraulically connecting the radial piston motor Peforming flushing cycle RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 4 11.3 Removing the radial piston motor 11.4 Preparing the components for storage or further use Disposal Modification and adjustments Troubleshooting 14.1 How to proceed for troubleshooting 14.2 Malfunction table Technical data Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
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Page 5: About This Manual
Instructions on the Use of Radial Piston Motors at Low Temperatures 90321 Data sheet Contains additional information on the use of Rexroth radial piston motors at low temperatures. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 6: Display Of Information
If this information is disregarded, the product can not be used and/or operated to the optimum extent. ▶ Single, independent step Numbered instruction: The numbers specify that the steps are completed one after the other. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 7: Designations
Rexroth document in the English language VDI 2230 Directive for the systematic calculation of high duty bolted joints and joints with one cylindrical bolt from the VDI (Verein Deutscher Ingenieure – Association of German Engineers) RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 8: Safety Instructions
• Modification of factory settings by non-authorized persons • Use of the radial piston motor in a machine or with load position that has not been approved by Bosch Rexroth RM Engineering Department. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 9: Personnel Qualifications
• fully understanding in particular the interrelationships regarding safety devices, • having knowledge on the function and assembly of hydraulic components. Bosch Rexroth offers training support for special fields. You can find an overview of the training contents on the internet at: www.boschrexroth.com/training. -
Page 10: Product-Specific Safety Instructions
Operating the unit above the permissible maximum pressure can cause component failure and hydraulic fluid to escape under high pressure. ▶ Changes to the factory settings must only be made by Bosch Rexroth specialist personnel. ▶ In addition, a pressure-relief valve is needed as back-up in the hydraulic System or in the main pump. - Page 11 Do not use the parking brake as a dynamic brake, ensure the brake is fully released during operation using the specified brake release pressure ▶ Make sure the orientation of the motor is according to the installation drawing RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG...
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Page 12: Personal Protective Equipment
The provision of personal protective equipment is the responsibility of the user of the radial piston motor. Observe the safety regulations and provisions of your country. All components of the personal protective equipment must be intact. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 13: General Instructions On Damage To Equipment And The Product
▶ Mixing of hydraulic fluids from different manufacturers or different types from the same manufacturer is not advisable. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 14 The warranty applies only to the delivered configuration. The entitlement to warranty cover will be rendered void if the product is incorrectly installed, commissioned or operated, or if it is used or handled improperly. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
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Page 15: Delivery Contents
– main ports A and B – drain port L • Where applicable – brake port Z – 2-speed port X – filler port F (metal plug) RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 16: About This Product
1 Front case 5 Cam 9 Holding brake or end 2 Rear case 6 Output shaft cover 3 Piston 7 Flow distributor 4 Cylinder block 8 Roller Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 17: Functional Description
The number of working and return strokes corresponds to the number of lobes on the cam multiplied by the number of pistons. Working Return stroke stroke Feed Return Fig. 4: Torque generation RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 18 Thus the flushing valve ensures a continuous renewal and Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
- Page 19 A disc pack (11), with alternate discs splined to the brake shaft and brake housing, is compressed by the force of a disc spring (10) acting through a piston (12). The friction between the discs generates a holding torque. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG...
- Page 20 When the pressure is removed the spring forces the piston back to the left and once again compresses the disc pack. Thus, the brake is fail-safe. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
- Page 21 The motor can also be supplied fitted with a target disc and with a speed sensor port machined, but covered and sealed with a blanking plate. These "sensor-ready" motors may be fitted with a sensor at a later date. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG...
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Page 22: Product Identification
The cam part number along with the displacement is stamped on the cam. These numbers are normally located in line with the main work ports. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 23: Product Variants
MCR-W brake brake MCR-H MCR-T Fig. 12: Examples of different MCR motor types For full details please refer to the motor code in the relevant data sheet. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 24: Transport And Storage
The dimensions vary with the motor type. The values applicable to the radial piston motor can be found in Height the installation drawing (available on request). Length Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 25: Transporting By Hand
The eye bolt should be screwed fully into the female thread in the end of the drive shaft, the motor may then be hoisted as indicated in Fig. 13 below. Fig. 13: Fixing the eye bolt RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 26 (Fig. 15). ▶ During lifting operations the motor must be manually supported to ensure it cannot slip from the sling. Fig. 15: Transport with lifting sling Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
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Page 27: Storing The Radial Piston Motor
Package the radial piston motor in an airtight, corrosion protective film with an enclosed desiccant. Store the radial piston motor so that it is protected against jolts. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 28: Installation
▶ Do not use any cotton waste or lint cloths for cleaning. ▶ Ensure that motors sharing the same axle have common brake and drain pressure values Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 29: Installation Position
The oil filling of the case should always take place via the filler port F and the air bleeding via port L in the drain line. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 30: Above-Reservoir Installation
Note: when the pistons are pushed out of the cylinder block at start-up, this displaces oil from the motor case, momentarily delivering full pump flow to the drain line. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 31: Installing The Radial Piston Motor
• To minimise noise levels ensure connecting lines are isolated by use of anti- vibration mountings. • Make sure that the installation location is clean and free from contamination. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 32: Connection To The Output Shaft
Ensure the gear mesh is not excessively loose as this could cause excessive backlash and premature gear wear. Protect the gear from frictional corrosion by application of a suitable lubricant. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 33: Assembly Of The Speed Sensor
Tighten the two M6 screws, drawing down each side evenly. Tighten to a final torque of 10 Nm. Fig. 19: Speed sensor port (blanking plate fitted) RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 34: Completing Installation
Bosch Rexroth Service partner or the service department of the manufacturing plant for the radial piston motor. Fig. 21: Removing transport protection Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 35: Hydraulically Connecting The Radial Piston Motor
Make certain that there are no mix-ups when installing fittings, mounting bolts and threaded plugs. ▶ For all female threads, use a threaded plug from the same standard and of the correct size. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 36 For the filler plug, the nominal setting on the torque wrench must be within ± 2 Nm. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
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Page 37: Peforming Flushing Cycle
7.5 Peforming flushing cycle In order to remove foreign particles from the system, Bosch Rexroth recommends a flushing cycle for the entire system before the first commissioning. To avoid internal contamination, the radial piston motor must not be included in the flushing cycle. -
Page 38: Commissioning
▶ During the commissioning process, monitor the temperature of the hydraulic fluid in the reservoir to ensure that it remains within the permissible viscosity limits. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 39: Filling The Radial Piston Motor
Fill the radial piston motor via the filler port F. See section 7.3 "Installation position" on page 29. Motors fitted with internal flushing will automatically fill at initial operation. The hydraulic lines of the system must also be filled. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 40: Testing The Hydraulic Fluid Supply
To achieve the required performance during commissioning it must be ensured that the radial piston motor is installed properly in the machine/system. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 41: Running-In Phase
• Air and/or water in the hydraulic system • Old hydraulic fluid • Other contamination ▶ For recommissioning, proceed as described in chapter 8.1 "First commissioning" on page 38. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 42: Final Checks
Case drain oil temperature < 85 °C. For operation above this temperature please consult Rexroth engineering department in Glenrothes. ▶ Operating speeds, pressures and drive power are within current data sheet recommendations. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 43: Operation
Flush using both motor drain ports L and F. Before any changes in operating requirements or conditions are considered please contact Bosch Rexroth RM Engineering Department in Glenrothes (contact details see chapter 10.5 "Spare parts" on page 47). RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 44: Manual Brake Release In Case Of Emergency
Table 10: Brake end cover screw torque values Motor type Screw size Torque MCR3 14…16 Nm MCR5 35…39 Nm MCR10 70…77 Nm MCR15 70…77 Nm MCR20 117…122 Nm Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 45: Maintenance And Repair
Yearly or every 1000 The change interval may vary depending on the degree operating hours of contamination of the hydraulic fluid. We recommend (whichever occurs using a contamination indicator. first) RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 46: Maintenance
The service life of the radial piston motor is limited by the service life of the bearings fitted. The service life can be requested from the responsible Bosch Rexroth Sales partner, or by contacting Bosch Rexroth Engineering Department in Glenrothes, see chapter 10.5 "Spare parts"... -
Page 47: Repair
Maintenance and repair 47/56 10.4 Repair Bosch Rexroth offers a comprehensive range of services for the repair of Rexroth radial piston motors. Repairs to Rexroth radial piston motors should only be carried out by authorized and qualified staff at service centers certified by Bosch Rexroth. -
Page 48: Removal And Replacement
Drain the radial piston motor. Plug all openings. 11.4 Preparing the components for storage or further use ▶ Proceed as described in chapter 6.2 "Storing the radial piston motor" on page 27. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 49: Disposal
If any modifications or adjustments to the radial piston motor are considered necessary in the first instance Bosch Rexroth RM Engineering Department should be contacted (contact details see chapter 10.5 "Spare parts" on page 47). RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... -
Page 50: Troubleshooting
Try to get a clear idea of the symptoms. Directly ask the (machine) operator. ▶ Document the work carried out. ▶ If you cannot rectify the error, contact one of the contact addresses which can be found at: www.boschrexroth.com/addresses. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015... -
Page 51: Malfunction Table
Check output from speed sensor on oscilloscope fitted and used in closed-loop speed control (should give correct number of pulses per motor system). revolution per specification). Replace sensor or target disc as necessary. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 52 2-speed spool (where fitted) jammed in a partially Strip 2-speed valve and check all components, or non-shifted position. including bore in motor housing. Remove any contamination and replace components or motor housing as necessary. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
- Page 53 Ensure all bolts are tightened to correct torque setting per Service Manual or motor assembly drawing. Loose fittings. Ensure all fittings are tightened to correct torque setting per manufacturer’s specification. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG...
- Page 54 Check output from speed sensor on oscilloscope sensor (where fitted) (should give correct number of pulses per motor revolution per specification). Replace sensor or target disc as necessary. Bosch Rexroth AG, MCR Series 30, 31, 32, 33 and 41, RE 15215-01-B/11.2015...
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Page 55: Technical Data
Further information can be found in the online product catalog Mobile Hydraulics: www.boschrexroth.com/radial-piston-motors The order-related technical data of your radial piston motor can be found in the order confirmation. RE 15215-01-B/11.2015, MCR Series 30, 31, 32, 33 and 41, Bosch Rexroth AG... - Page 56 Bosch Rexroth Limited Mobile Applications Viewfield Industrial Estate Glenrothes, Fife Scotland, KY6 2RD United Kingdom Phone +44 1592 631 777 www.boschrexroth.com Your local contact can be found at: www.boschrexroth.com/addresses Subject to change Printed in Germany RE 15215-01-B/11.2015...
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