Related Manuals for Bosch rexroth A21VG 10 Series
Summary of Contents for Bosch rexroth A21VG 10 Series
- Page 1 Axial Piston Variable Double Pump A21VG Series 10 Instruction manual Replaces: -.- RE 93223-01-B/09.2020 English...
- 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
7.4.4 Installation with coupling 7.4.5 Installation on a gearbox 7.4.6 Installation with cardan shaft 7.4.7 Completing installation 7.4.8 Hydraulically connecting the axial piston unit 7.4.9 Electrically connecting the axial piston unit Performing flushing cycle RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 4 11.3 Removal of the axial piston unit 11.4 Preparing the components for storage or further use Disposal Extension and conversion Troubleshooting 14.1 How to proceed for troubleshooting 14.2 Malfunction table Technical data Alphabetical index Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 5: About This Documentation
Manual Contains additional information on the use of Rexroth axial piston units at low temperatures. 90312 Data sheet Storage and preservation of axial piston units Contains additional information on storage and preservation. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 6: Display Of Information
Damage to equipment: the product or the environment NOTICE may be damaged. 1.3.2 Symbols The following symbols mark notes that are not safety-relevant but which increase the understanding of the documentation. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
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 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 8: Safety Instructions
2.3 Improper use Any use other than that described as intended use shall be considered as improper and is therefore impermissible. Bosch Rexroth AG shall accept no liability whatsoever for damage resulting from improper use. The user shall bear all risks arising from improper use. -
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: http://www.boschrexroth.com/didactic. - Page 10 Potential electromagnetic interference (EMI) exists if the solenoid is energized with a modulated direct current (e.g. PWM signal). Appropriate testing and measures should be taken by the machine manufacturer to ensure other components or operators (e.g. with pacemaker) are not affected by this potential. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 11: Product-Specific Safety Instructions
Operating the unit above the maximum permissible pressure can cause components to burst and hydraulic fluid to escape under high pressure. ▶ Changes to the factory settings may only be made by Bosch Rexroth specialists. ▶ In addition, a pressure relief valve is required in the hydraulic system as back-up. - Page 12 ▶ Check whether your application requires remedial measures on your machine in order to bring the driven consumer to a safe position (e.g. safe stop). ▶ If necessary, make sure these are appropriately implemented. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 13: Personal Protection Equipment
The personal protection equipment is the responsibility of the user of the axial piston unit. Observe the safety regulations and provisions of your country. All components of the personal protection equipment must be intact. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 14: General Instructions On Damage To Equipment And The Product
Before installation, remove all fluids from the axial piston unit to prevent mixing with the hydraulic fluid used in the machine/system. ▶ Any mixture of hydraulic fluids of different manufacturers and/or different types of the same manufacturer is generally not permissible. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... - Page 15 Leaks may lead to a leakage of hydraulic fluid. ▶ Take appropriate measures to protect the axial piston unit from chemical or corrosive environmental conditions. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation...
- Page 16 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 Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 17: Scope Of Supply
• Axial piston unit as per order confirmation The following parts are also installed on delivery: • Protection plug/threaded plug (1) • For version with through drive, metallic protection cover and mounting bolts (2) RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 18: Product Description
Fig. 2: Assembly of the A21VG Drive shaft Stroking piston Piston Retainer plate High-pressure side 10 Slipper pad Controller (using the ET Low-pressure side 11 Cradle as an example here) Control plate 12 Angle Sensor (optional) Cylinder Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
Page 19: Functional Description
Various control devices are available depending on requirements. Information about this can be found in data sheet 93223. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 20: Product Identification
11 Serial number 5 Direction of rotation (viewed on 12 Material number of the axial piston drive shaft) – here: clockwise unit 6 Weight (optional) 13 Ordering code 7 Power 14 Customer material number Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
Page 21: Transport And Storage
▶ The lifting device must be capable of handling the total weight of the unit plus 20%. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 22 Place the lifting strap around the axial piston unit in such a way that it neither passes over the attachment parts (e.g. valves) nor that the axial piston unit is hung from attachment parts (see Fig. 5). Fig. 5: Transport with lifting strap Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 23: Storing The Axial Piston Unit
If the storage time exceeds 24 months, the shaft seal ring must be replaced. After expiry of the maximum storage time, we recommend that you have the axial piston unit inspected by your responsible Bosch Rexroth Service partner. In the event of questions regarding repair and spare parts, contact your responsible Bosch Rexroth Service partner or the service department of the manufacture’s plant for the axial piston unit, see chapter 10.5 “Spare parts”... - Page 24 The following instructions only refer to axial piston units which are operated with a mineral-oil based hydraulic fluid. Other hydraulic fluids require preservation methods that are specifically designed for them. In such cases, consult with Bosch Rexroth Service, see chapter 10.5 “Spare parts” on page 45. Bosch Rexroth recommends the following procedure: Clean the axial piston unit, see chapter 10.1 “Cleaning and care”...
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Page 25: Installation
Make sure that the axial piston unit is air bled and filled with hydraulic fluid during commissioning and operation. This is also to be observed following relatively long standstill periods as the axial piston unit may empty via the hydraulic lines. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 26 ▶ Use lint-free cloths for cleaning. ▶ Use suitable mild detergents to remove lubricants and other difficult-to-remove contamination. Cleaning agents must not enter the hydraulic system. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 27: Installation Position
* If R port is inaccessible, for installation position 1, the X and X ports can be opened to bleed the air when the unit is not in use. Does not apply to HT units. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 28: Above-Reservoir Installation
* If R port is inaccessible, for installation position 1, the X and X ports can be opened to bleed the air when the unit is not in use. Does not apply to HT units. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
Page 29: Installing The Axial Piston Unit
If the material number for the axial piston unit does not correspond to the one in the order confirmation, contact Bosch Rexroth Service for clarification, see chapter 10.5 “Spare parts” on page 45. Before installing, completely empty the axial piston unit to prevent any mixing with the hydraulic fluid used in the machine/system. - Page 30 How to install the axial piston unit depends on the connecting elements to the drive side. The following descriptions explain the installation of the axial piston unit: • with a coupling • on a gearbox Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 31: Installation With Coupling
(installation length). ▶ Protect the drive shaft against frictional corrosion by providing permanent lubrication. ▶ Fix the axial piston unit at the installation location. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 32: Installation With Cardan Shaft
Use a suitable tool for this to prevent damage to the sealing and functional surfaces. If sealing or functional surfaces are damaged, contact your responsible Bosch Rexroth Service partner or the service department of the manufacturer’s plant for the axial piston unit. - Page 33 The setting screws are protected against unauthorized resetting by means of protection caps. Removing the protection caps will void the warranty. If you need to change settings, contact your responsible Bosch Rexroth Service partner (for address, see chapter 10.5 “Spare parts” on page 45.
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Page 34: Hydraulically Connecting The Axial Piston Unit
– The hose must be pressure-resistant, also for external air pressure. • Pressure line – For the pressure lines, use only pipes, hoses and connecting elements rated for the operating pressure range specified in data sheet 93223 (see Table 10). Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... - Page 35 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 system of units and of the correct size. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation...
- Page 36 O = Must be connected (plugged on delivery) X = Plugged (normal operation) Port G (or G on the version with DA control valve) must be charged with boost pressure by the customer. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
- Page 37 For relationship between direction of rotation and flow direction, please refer to data sheet 93223. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation...
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Page 38: Electrically Connecting The Axial Piston Unit
Retighten the mounting nut. Tightening torque of the mounting nut: 5+1 Nm. 7.5 Performing flushing cycle In order to remove foreign particles from the system, Bosch Rexroth recommends a flushing cycle for the entire system before initial commissioning. To avoid internal contamination, the axial piston unit must not be included in the flushing cycle. -
Page 39: Commissioning
Use only a hydraulic fluid that corresponds to the following requirements: You can find details on the minimum requirements for hydraulic fluids in Bosch Rexroth data sheets 90220, 90221, 90222, and 90223. The titles RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 40 Bosch Rexroth evaluates hydraulic fluids on the basis of the Fluid Rating according to data sheet 90235. For hydraulic fluids which have been positively evaluated in the Fluid Rating, please refer to data sheet 90245 „Bosch Rexroth fluid rating list for Rexroth hydraulic components (pumps and motors)“. The hydraulic fluid should be selected so that the operating viscosity in the operating temperature range is within the optimum range (ν...
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Page 41: Testing The Hydraulic Fluid Supply
After starting the diesel engine, check in particular the specified pressures, e.g. system pressure, boost pressure and case pressure. ▶ If necessary, remove the pressure gauge and plug the ports with threaded plugs. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 42: Running-In Phase
▶ Change the hydraulic fluid if the required cleanliness level is not reached. If a laboratory test is not carried out after the running-in phase, Bosch Rexroth recommends the hydraulic fluid be changed. 8.3 Recommissioning after standstill Depending on the installation conditions and ambient conditions, changes may occur in the hydraulic system which make recommissioning necessary. -
Page 43: Operation
Use only water and, if necessary, a mild detergent to clean the axial piston unit. Never use solvents or aggressive detergents. ▶ Remove external coarse dirt and keep sensitive and important components, such as solenoids, valves and sensors, clean. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... -
Page 44: Inspection
Maintenance and repair 10.2 Inspection In order to enable long and reliable operation of the axial piston unit, Bosch Rexroth recommends testing the hydraulic system and axial piston unit on a regular basis, and documenting and archiving the following operating conditions:... -
Page 45: Repair
Maintenance and repair 45/56 10.4 Repair Bosch Rexroth offers a comprehensive range of services for the repair of Rexroth axial piston units. Repairs on the axial piston unit and its fittings may only be performed by service centers certified by Bosch Rexroth. -
Page 46: Removal And Replacement
Completely empty the axial piston unit. Plug all openings. 11.4 Preparing the components for storage or further use ▶ Proceed as described in chapter 6.2 “Storing the axial piston unit” on page 23. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
Page 47: Disposal
Changes to settings on the customer side should only be made using the product-specific setting instructions. The warranty from Bosch Rexroth only applies to the product as delivered. The warranty will be voided if the unit is modified or extended. Adjusting the setting screws will render the warranty void. If you need to change the settings, please contact your local contact person;... -
Page 48: Troubleshooting
– How does the malfunction appear? ▶ Try to get a clear idea of the cause of the fault. Directly ask the (machine) operator. ▶ Document the work carried out. ▶ If the fault cannot be corrected, please refer to one of the contract addresses at: www.boschrexroth-us.com/contactus. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020... -
Page 49: Malfunction Table
Wear of axial piston unit. Exchange axial piston unit, contact Bosch Rexroth Service. Mechanical damage to the axial piston unit. Exchange axial piston unit, contact Bosch Rexroth Service. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 50 Exchange axial piston unit, contact Bosch Rexroth Service. Instability/vibrations Setpoint value not stable. Machine/system manufacturer. Resonance in the reservoir line. Machine/system manufacturer. Malfunction of the control devices or the Contact Bosch Rexroth Service. controller. Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 51: Technical Data
93223. The data sheet can be found in the online product catalog at www.boschrexroth.com/p-A21VG The order-related technical data of your axial piston unit can be found in the order confirmation. RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 52 52/56 Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
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Page 53: Alphabetical Index
Product description ▶ F Pump Filling Flushing cycle ▶ Q Functional description Qualifications – Control Functional test ▶ R Recommissioning ▶ I – after standstill Identification Removal Inspection – Performing – Preparing RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation... - Page 54 ▶ T Technical data Tightening torques Tools Transport – By hand – With eye bolt – With lifting strap Transporting Transport protection Troubleshooting ▶ U Unpacking ▶ W Warranty 16, 33, 47 Weight Bosch Rexroth Corporation, A21VG Series 10, RE 93223-01-B/09.2020...
- Page 55 Alphabetical index 55/56 RE 93223-01-B/09.2020, A21VG Series 10, Bosch Rexroth Corporation...
- Page 56 Bosch Rexroth Corporation 8 Southchase Court Fountain Inn, SC 29644-9018 Telephone (864) 967-2777 Facsimile (864) 962-5338 www.boschrexroth-us.com Find your local contact person here: www.boschrexroth-us.com/contactus Subject to change RE 93223-01-B/09.2020 Printed in the USA...