Axial piston variable motor A6VM series 71
88Pages

{{requestButtons}}

Catalog excerpts

Axial piston variable motor A6VM series 71 - 1

The Drive & Control Company Rexroth Bosch Group Axial piston variable motor A6VM series 71 RE 91610 Edition: 11.2018 Replaces: 09.2018 ► All-purpose high pressure motor ► Sizes 60 to 280 ► Nominal pressure 450 bar ► Maximum pressure 530 bar (sizes 60 to 215) ► Maximum pressure 500 bar (size 280) ► Open and closed circuits Features Contents ► Robust motor with long service life Type code 2 ► Approved for very high rotational speeds Hydraulic fluids 6 ► High starting efficiency Flow direction 7 ► Excellent slow-running characteristics Working pressure range 7 ► Large variety of controls Technical data 9 ► High control range (can be swiveled to zero) HP - Proportional hydraulic control 11 ► High torque EP - Proportional control, electric 14 ► Optionally with flushing and boost-pressure valve HZ - Two-point control, hydraulic 17 mounted EZ - Two-point control, electric 19 ► Optionally with mounted high-pressure counterbalance HA - Automatic high-pressure related control 21 valve DA - Automatic control, speed related 26 ► Bent-axis design Electric travel direction valve (for DA, HA.R) 28 Neutral position switch 71 Flushing and boost-pressure valve 72 Integrated BVI counterbalance valve 78 Setting range for displacement 84 Project planning notes, Safety instructions 87

Open the catalog to page 1
Axial piston variable motor A6VM series 71 - 2

A6VM series 71 | Axial piston variable motor Type code Bent-axis design, variable, nominal pressure 450 bar, maximum pressure 530 bar (NG60 to 215) resp. 500 bar (NG280) • = Available o = On request - = Not available

Open the catalog to page 2
Axial piston variable motor A6VM series 71 - 3

2) The settings for the setting screws can be found in the table (page 84 and 85). 3) Vg max for size 280 not adjustable, limitation by cap

Open the catalog to page 3
Axial piston variable motor A6VM series 71 - 4

7) Type code for counterbalance valve to be quoted separately in accordance with data sheet 95522 (BVD), 95525 (BVE) and 95528 (BVD/BVE32). Note the restrictions described on page 74. Only in combination with HZ5, EZ5, EZ6, HP or EP with respective negative control Possible only in combination with HP, EP and HA control A port plate for mounting the MHB32 counterbalance valve with a 1-stage pressure-relief valve (pilot operated) is available as a

Open the catalog to page 4
Axial piston variable motor A6VM series 71 - 5

9) Specify the type code of sensor in accordance with data sheet 95135 (HDD), 95132 (DSM) or 95133 (DSA) and observe the requirements for the electronics.

Open the catalog to page 5
Axial piston variable motor A6VM series 71 - 6

A6VM series 71 | Axial piston variable motor Hydraulic fluids Hydraulic fluids The A6VM variable motor is designed for operation with Selection of hydraulic fluid Bosch Rexroth evaluates hydraulic fluids by means of the Application instructions and requirements for hydraulic fluid Fluid Rating according to data sheet 90235. selection, behavior during operation as well as disposal and Hydraulic fluids which have been evaluated positively in the environmental protection should be taken from the follow- Fluid Rating are contained in the following data sheet: ing data sheets before the start of...

Open the catalog to page 6
Axial piston variable motor A6VM series 71 - 7

Axial piston variable motor | A6VM series 71 Flow direction Flow direction Direction of rotation as viewed on drive shaft Clockwise Counterclockwise Hydraulic fluid filtration Finer filtration improves the cleanliness level of the hydraulic fluid, which increases the service life of the axial piston unit. A cleanliness level of at least 20/18/15 is to be maintained according to ISO 4406. At a hydraulic fluid viscosity of less than 10 mm2/s (e.g. due to high temperatures during short-term operation) at the drain port, a min. cleanliness level of 19/17/14 as defined in ISO 4406 is required....

Open the catalog to page 7
Axial piston variable motor A6VM series 71 - 8

A6VM series 71 | Axial piston variable motor Working pressure range ▼▼ Rate of pressure change RA max pnom Single operating period Nominal pressure pnom ∆p Minimum pressure (high-pressure side) ▼▼ Maximum differential pressure at the shaft seal Differential pressure Dp [bar] Maximum pressure pmax Total operating period = t1 + t2 + ... + tn ▶▶ Working pressure range applies when using mineral oil-based hydraulic fluids. Please contact us for values NG60 for other hydraulic fluids. ▶▶ In addition to the hydraulic fluid and the temperature, the service life of the shaft seal is influenced by...

Open the catalog to page 8
Axial piston variable motor A6VM series 71 - 9

Size Displacement geometric, per revolution Maximum rotational speed11 At Vg max (c°mplymg with the maxi- at Vg < Vgx (see diagram) mum permissible inlet flow) at Vg 0 Inlet flow21 at nnom and Vg max Vg/2 to 0 (interpolated) Moment of inertia of rotary group Maximum angular acceleration Case volume Weight approx. Axial piston variable motor | A6VM series 71 Technical data Speed range The minimum rotational speed nmin is not limited. For applications with requirements on the evenness of the rotation at low rotational speeds, please contact us. Notices ► Theoretical values, without efficiency...

Open the catalog to page 9
Axial piston variable motor A6VM series 71 - 10

10 A6VM series 71 | Axial piston variable motor Technical data Drive shaft Maximum radial force at distance a (from shaft collar) Maximum differential pressure at Vgmax and Fq max APq max Maximum axial force at standstill or depressurized operation Permissible axial force per bar working pressure + Fax perm/ bar Drive shaft Maximum radial force at distance a (from shaft collar) with permissible torque Maximum differential pressure at Vgmax and Fq max Maximum axial force at standstill or depressurized operation Permissible axial force per bar working pressure Effect of radial force Fq on...

Open the catalog to page 10
Axial piston variable motor A6VM series 71 - 11

Axial piston variable motor | A6VM series 71 11 HP - Proportional hydraulic control HP - Proportional hydraulic control The proportional hydraulic control provides infinite adjustment of the displacement. The control is proportional to the pilot pressure at port X. HP1, HP2 positive control ► Beginning of control at Vg min (minimum torque, maximum permissible rotational speed at minimum pilot pressure) ► End of control at Vg max (maximum torque, minimum rotational speed at maximum pilot pressure) HP5, HP6 negative control ► Beginning of control at Vg max (maximum torque, minimum rotational...

Open the catalog to page 11
Axial piston variable motor A6VM series 71 - 12

A6VM series 71 | Axial piston variable motor HP – Proportional hydraulic control HP2, HP6 pilot pressure increase ΔpSt = 25 bar ▼▼ Circuit diagram HP1, HP2 size 280 (positive control) A pilot pressure increase of 25 bar at port X results in an increase in displacement from Vg min to Vg max. HP6 negative control A pilot pressure increase of 25 bar at port X results in a decrease in displacement from Vg max to Vg min. ▶▶ Beginning of control, setting range 5 to 35 bar ▶▶ Standard setting: Beginning of control at 10 bar (end of control at 35 bar) Beginning of Pilot pressure control setting...

Open the catalog to page 12

All Bosch Rexroth - Mobile Hydraulics and Electronics catalogs and technical brochures

  1. WGM

    8 Pages

  2. WGM07

    8 Pages

  3. DI4

    20 Pages