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Bosch Rexroth A11VO Series Operating Instructions Manual
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Bosch Rexroth A11VO Series Operating Instructions Manual

Axial piston variable pump
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Axial Piston Variable Pump
A11V(L)O
Series 10 and 11
Operating Instructions
RE 92500-01-B/04.13
Replaces: 04.10
English

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Summary of Contents for Bosch Rexroth A11VO Series

  • Page 1 Axial Piston Variable Pump RE 92500-01-B/04.13 Replaces: 04.10 A11V(L)O English Series 10 and 11 Operating Instructions...
  • Page 2 © This document, as well as the data, specifica- tions 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.

  • Page 3: Table Of Contents

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 3/52 Contents Contents About this document ..................4 1.1 Related documents ...................4 1.2 Abbreviations used ...................5 General safety instructions ................6 2.1 Intended use .....................6 2.2 Improper use .....................6 2.3 Personnel qualifications ................7 2.4 Safety instructions in this document ............7...

  • Page 4: About This Document

    4/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 About this document About this document These instructions contain important information on the safe and appropriate installation, transport, commissioning, maintenance, disassembly and simple troubleshooting of the axial piston variable pump A11V(L)O Series 10 and 11.

  • Page 5: Abbreviations Used

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 5/52 About this document Abbreviations used As umbrella term for "axial piston variable pump A11V(L)O", the designation "axial piston unit" will be used in the following. Table 2: Abbreviations...

  • Page 6: General Safety Instructions

    For example in ex- protection areas or in safety-related parts of a control system (function safety). Bosch Rexroth AG shall accept no liability whatsoever resulting from improper use. The user shall bear all risks arising from improper use.

  • Page 7: Personnel Qualifications

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 7/52 General safety instructions • Use under a continuous pressure differential between internal and external pressure greater than 6 bar, whereby the external pressure must always be lower than the internal pressure (case pressure) •...

  • Page 8: Adhere To The Following Instructions

    8/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 General safety instructions The signal words have the following meaning: Signal word Application DANGER! imminently Indicates an hazardous situation which, if not avoided, will certainly result in death or serious injury.

  • Page 9: Operator's Obligations

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 9/52 General safety instructions • Always set up the relevant part of the system so that it is depressurized and free of electrical voltage before you install the product or when connecting and disconnecting plugs.

  • Page 10: Delivery Contents

    10/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Delivery contents 3 Delivery contents Fig. 1: Axial piston unit Included in the delivery contents are: • 1 axial piston unit The following parts are also installed on delivery: •...

  • Page 11: Product Description

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 11/52 Product description 4 Product description Performance description The axial piston variable pump generates, controls and regulates a hydraulic fluid flow. The A11V(L)O has been designed for stationary applications.

  • Page 12: Functional Description

    12/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Product description 4.2.2 Functional description Pump Torque is applied to the drive shaft (1) by an engine. The cylinder (9) turns with the drive shaft, turning with it the pistons (10). On each rotation, the pistons perform a stroke movement which is defined by the pitch of the swashplate (13).

  • Page 13: Product Identification

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 13/52 Product description g max g min Fig. 3: Circuit diagram A11VLO with charge pump Product identification The axial piston unit can be identified from the name plate. The following example...

  • Page 14: Transport And Storage

    14/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Transport and storage 5 Transport and storage Transporting the axial piston unit CAuTION! Risk of damage! Striking or impulsive forces could damage the axial piston unit. Do not strike the coupling or drive shaft of the axial piston unit.

  • Page 15: Risk Of Injury

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 15/52 Transport and storage You can hoist the axial piston unit as shown in Fig. 5 with the ring screw screwed into the drive shaft. Fig. 5: Fixing the ring screw...

  • Page 16: Storing The Axial Piston Unit

    16/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Transport and storage Storing the axial piston unit Requirement • The storage areas must be free from corrosive materials and gasses. • The storage areas must be dry.
  • Page 17 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 17/52 Transport and storage Rexroth recommends the following procedure: Clean the axial piston unit, see chapter "9.1 Cleaning and care". Completely empty the axial piston unit. For storage time up to 12 months: Moisten the inside of the axial piston unit with mineral oil and fill with approx.

  • Page 18: Installation

    18/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation 6 Installation Prior to installation, the following documents must be available: • Installation drawing for axial piston unit (can be obtained from your responsible contact person at Rexroth) •...
  • Page 19 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 19/52 Installation Fig. 7: Suction pressure Absolute pressure gauge Standard pressure gauge Make sure that a minimum suction pressure of 0.8 bar without charge pump (0.6 bar with charge pump) absolute is present at port "S" during operation, in all installation positions and installation locations for the axial piston pump, see Fig.

  • Page 20: Installation Position

    20/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation Installation position The following installation positions are permissible. The shown piping layout illustrates the basic layout. 6.3.1 Below-tank installation (standard) Below-tank installation is when the axial piston unit is installed outside of the tank below the minimum fluid level.

  • Page 21: Tank Installation

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 21/52 Installation 6.3.2 Tank installation Tank installation is when the axial piston unit is installed in the tank below the minimum fluid level. The axial piston unit is completely below the hydraulic fluid.
  • Page 22 22/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation Highest case drain port When designing the tank, ensure adequate distance between the suction line and the case drain line. Suction port This prevents the heated, return flow from being drawn directly back into the suction line.
  • Page 23 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 23/52 Installation Recommendation for installation position 7 (shaft upwards): A check valve in the case drain line (cracking pressure 0.5 bar) can prevent draining of the case interior. S max...

  • Page 24: Installing The Axial Piston Unit

    24/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation Installing the axial piston unit DANGER! Systems which are in operation pose a risk of injury! Working on operating systems poses a danger to life and limb. The work steps described in this chapter must only be performed on systems which are at a standstill.

  • Page 25: General Instructions

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 25/52 Installation 6.4.2 Dimensions The installation drawing contains the dimensions for all connections and ports on the axial piston unit. Also observe the instructions provided by the manufacturers of the other components when selecting the required tools.

  • Page 26: Installation With Coupling

    26/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation 6.4.4 Installation with coupling How to install the axial piston unit with a coupling is described in detail in the following: Install the specified coupling half onto the drive shaft of the axial piston unit according to the instructions of the coupling manufacturer.

  • Page 27: Completing Installation

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 27/52 Installation 6.4.6 Completing installation Remove any mounted transport screws. Remove the transport protection. The axial piston unit was delivered with protective covers and plastic plugs or locking screws. These must be removed before connecting. Use appropriate tools.

  • Page 28: Hydraulically Connecting The Axial Piston Unit

    28/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation 6.4.7 Hydraulically connecting the axial piston unit The machine or system manufacturer is responsible for dimensioning the lines. The axial piston unit must be connected to the rest of the hydraulic system in accordance with the hydraulic circuit diagram of the machine or system manufacturer.
  • Page 29 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 29/52 Installation Notes on routing the lines Observe the following notes when routing the suction, pressure and case drain lines. Make certain that the suction line (pipe or hose) is as short and straight as possible.

  • Page 30: Port Overview

    30/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation Port overview Fig. 13: Port overview A11VLO Series 10 and 11, LRDS control, clockwise rotation Fig. 14: Port overview A11VLO Series 10 and 11, LRS control, counter-clockwise...

  • Page 31: Tightening Torques

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 31/52 Installation A11V(L)O Table 9: Ports Series 10 and 11 Designation Port for Standard Maximum State pressure [bar] A, A Service line SAE J518 Fixing threads DIN 13 Suction (without charge pump)
  • Page 32 32/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Installation Table 10: Tightening torques of the threaded holes and locking screws Maximum permissible Ports Required tightening torque of wAF hexagon socket for tightening torque of the the locking screws M...
  • Page 33 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 33/52 Installation Changing plug position If necessary, you can change the position of the connector by turning the solenoid. To do this, proceed as follows: Loosen the fixing nut ( 1) of the solenoid.

  • Page 34: Commissioning

    34/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Commissioning 7 Commissioning wARNING! Danger while working in the danger zone of a machine or system! It is not permissible to work in the danger zone of a machine or system.

  • Page 35: First Commissioning

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 35/52 Commissioning First commissioning CAuTION! Risk of damage to the product! Any contamination of the hydraulic fluid leads to wear and malfunctions. In particular, contaminants, such as welding beads or metal cuttings in the hydraulic lines, may damage the axial piston unit.
  • Page 36 36/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Commissioning Danger of environmental contamination! CAuTION! The discharge or spillage of hydraulic fluid while filling the axial piston unit can lead to environmental pollution and contamination of the groundwater.
  • Page 37 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 37/52 Commissioning 7.1.3 Performing functional test wARNING! Risk of injury in case of incorrectly connected machine or system! Any change of the connections will lead to malfunctions (e.g. lift instead of lower) and thus represents a corresponding danger to persons and equipment.

  • Page 38: Recommissioning After Standstill

    38/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Commissioning Recommissioning after standstill Depending on the installation conditions and ambient conditions, changes may occur in the system which make recommissioning necessary. Among others, the following criteria may make recommissioning necessary: •...

  • Page 39: Operation

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 39/52 Operation 8 Operation The product is a component which requires no settings or changes during operation. For this reason, this chapter of the instructions does not contain any information on adjustment options.

  • Page 40: Maintenance And Repair

    40/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Maintenance and repair 9 Maintenance and repair Cleaning and care CAuTION! Damage to the surface caused by solvents and aggressive detergents! Aggressive detergents may damage the seals on the axial piston unit and cause them to age faster.

  • Page 41: Maintenance

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 41/52 Maintenance and repair Maintenance The axial piston unit is low maintenance when used as intended. The service life of the axial piston unit is heavily dependent on the quality of the hydraulic fluid.

  • Page 42: Decommissioning

    42/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Decommissioning 10 Decommissioning The axial piston unit is a component that does not require decommissioning. For this reason, this chapter of the manual does not contain any information For details about how to disassemble or replace your axial piston unit, please refer to chapter "11 Disassembly and replacement".

  • Page 43: Preparing The Components For Storage Or Further Use

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 43/52 Disassembly and replacement Loosen the lines and collect the escaping hydraulic fluid in the container. Remove the axial piston unit. Use an appropriate lifting device. Completely empty the axial piston unit.

  • Page 44: Disposal

    44/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Disposal 12 Disposal Observe the following points when disposing of the axial piston unit: Completely empty the axial piston unit. Dispose of the hydraulic fluid according to the national regulations of your country.

  • Page 45: Troubleshooting

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 45/52 Troubleshooting 14 Troubleshooting The following table may assist you in troubleshooting. The table makes no claim for completeness. In practical use, problems which are not listed here may also occur.

  • Page 46: Malfunction Table

    46/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Troubleshooting 14.2 Malfunction table Table 12: Malfunction table for variable pumps Fault Possible cause Remedy Unusual noises Drive speed too high. Machine or system manufacturer. Wrong direction of rotation.
  • Page 47 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 47/52 Troubleshooting Table 12: Malfunction table for variable pumps Fault Possible cause Remedy No or insufficient pressure Faulty mechanical drive Machine or system manufacturer. (e.g. defective coupling). Drive power too low.

  • Page 48: Technical Data

    48/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Technical data 15 Technical data The technical data of your axial piston unit can be found in data sheet RE 92500. The data sheets can be found on the internet under www.boschrexroth.com/axial-piston-pumps...

  • Page 49: Index

    RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 49/52 Index Index Abbreviations 5 General instructions 25 Above-tank installation 22 Address directory 48 Assembly 11 Hydraulic fluid 35 Below-tank installation 20 Identification 13 Impeller 11, 12 Inspection 40...
  • Page 50 50/52 Bosch Rexroth AG A11V(L)O Series 10 and 11 | RE 92500-01-B/04.13 Index Qualifications Personnel 7 Recommissioning After standstill 38 Related documents 4 Repair 41 Replacement 42 Retaining plate 11 Ring screw 14 Running-in phase 38 Safety instructions 6, 7...
  • Page 51 RE 92500-01-B/04.13 | A11V(L)O Series 10 and 11 Bosch Rexroth AG 51/52...

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