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Bosch Rexroth A2FM series Instruction Manual

Axial piston fixed motor a2fm for explosive areas ii 2g ck iib tx.
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Axial piston fixed motor A2FM
for explosive areas
II 2G ck IIB Tx
Details on explosion protection
▶ Field of application according to ATEX 94/9/EC
▶ Gas: II 2G ck IIB Tx in accordance with
DIN EN 13463-1:2009, DIN EN 13463-5:2011
Features
▶ Fixed motor with axial tapered piston rotary group of
bent-axis design, for hydrostatic drives in open and
closed circuits.
▶ For use in mobile and stationary applications
▶ The output speed depends on the flow of the pump and
the displacement of the motor
▶ The output torque increases with the pressure differen-
tial between the high-pressure side and the low-pres-
sure side.
▶ Finely graduated sizes permit far-reaching adaptation to
the drive concerned
▶ High power density
▶ Small dimensions
▶ High total efficiency
▶ Good starting efficiency
▶ Economical design
▶ One-piece tapered piston with piston rings for sealing
▶ Series 61
▶ Sizes 10 to 180
▶ Nominal pressure 400 bar
▶ Maximum pressure 450 bar
▶ Open and closed circuits
Contents
RE 91001-01-X-B2/01.2016, Bosch Rexroth AG
Part II of instruction manual
according to ATEX directive
94/9/EC data sheet
RE 91001-01-X-B2
Edition: 01.2016
Replaces: 04.2009
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   Summary of Contents for Bosch Rexroth A2FM series

  • Page 1: Table Of Contents

    Installation instructions ▶ High power density Project planning notes ▶ Small dimensions Safety instructions ▶ High total efficiency ▶ Good starting efficiency ▶ Economical design ▶ One‑piece tapered piston with piston rings for sealing RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 2: Ordering Code

    Fastening thread or threaded ports, metric Threaded connections at the sides sealed with threaded plugs Indicate ordering code for counterholding valve BVD separately as per data sheet 95522. Note the restrictions described on page 24. Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 3: Hydraulic Fluids

    T Project planning note The maximum leakage temperature and case pressure must not be exceeded. For this purpose, constant monitoring by means of appropriate sensors in the system is necessary. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 4

    Filtration of the hydraulic fluid 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 19/17/14 is to be maintained according to ISO 4406. Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 5: Shaft Seal

    For the maximum speed, see Technical data on page 7. ambient pressure. These values are valid for ambient pressure p  = 1 bar. The FKM shaft seal ring may be used for leakage tempera‑ tures from ‑25 °C to +90 °C. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 6: Working Pressure Range

    Working pressure range valid when using hydraulic fluids based on mineral oils. Values for other hydraulic fluids, please contact us. Minimum pressure (high‑pressure side) Time t Total operating period = t + … + t Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 7: Technical Data

    – for the optimum viscosity range from ν = 36 to 16 mm page 24). – with hydraulic fluid on the basis of mineral oil Torque without radial force, with radial force see page 8. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 8

    1250 1600 1600 1600 ax max free operation Permissible axial force per bar working pressure + F /bar N/bar 10.6 12.9 12.9 12.9 16.7 16.7 16.7 ax perm With intermittent operation Restricted technical data only for splined shaft Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 9

    ▶ Special requirements apply in the case of belt drives. Please contact us. ▼ Toothed gear output drive 1 “Counter‑clockwise” rotation. Pressure at port B ” 2 “Clockwise rotation, Pressure at port A 3 Bidirectional direction of rotation RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 10: Dimensions, Sizes

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 11

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 12: Dimensions, Sizes 23, 28, 32

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 13

    Keep this in mind when selecting measuring devices and fittings. O = Must be connected (plugged on delivery) Only dimensions according to SAE J518, metric fastening thread is X = Plugged (in normal operation) a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 14: Dimensions Size 45

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 15

    O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Only dimensions according to SAE J518, metric fastening thread is a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 16: Dimensions Sizes

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 17

    O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Only dimensions according to SAE J518, metric fastening thread is a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 18: Dimensions Sizes

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 19

    Depending on the application, momentary pressure peaks may occur. X = Plugged (in normal operation) Keep this in mind when selecting measuring devices and fittings. Only dimensions according to SAE J518, metric fastening thread is a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 20: Dimensions Sizes 107, 125

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 21

    Depending on the application, momentary pressure peaks may occur. X = Plugged (in normal operation) Keep this in mind when selecting measuring devices and fittings. Only dimensions according to SAE J518, metric fastening thread is a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 22: Dimensions Sizes 160, 180

    The spot face can be deeper than as specified in the standard Depending on the application, momentary pressure peaks may occur. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 23

    Depending on the application, momentary pressure peaks may occur. X = Plugged (in normal operation) Keep this in mind when selecting measuring devices and fittings. Only dimensions according to SAE J518, metric fastening thread is a deviation from the standard. RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 24: Counterbalance Valve Bvd

    Permissible inlet flow or pressure when using DBV and BVD Without valve Limited values when using DBV and BVD Motor [l/min] Code [bar] [bar] [l/min] [bar] [l/min] 400/450 350/420 350/420 Pressure relief valve Counterbalance valve, dual action Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 25

    ▶ Track drive in excavators ▼ Application example for winch counterbalance valve BVD...W in cranes Winch with mechanical Pump, directional Counterholding Fixed motor valve, not included in valve BVD…W A2FM park brake the scope of delivery B‘ A‘ RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 26

    The spot face can be deeper than as specified in the standard Momentary pressure spikes may occur depending on the application. O = Must be connected (plugged on delivery) Keep this in mind when selecting measuring devices and fittings. X = Plugged (in normal operation) Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 27: Installation Instructions

    Filling / air bleeding Air bleed (special version) Bearing flushing / air bleed port Drain port Minimum required immersion depth (200 mm) t min Minimum required distance to reservoir bottom (100 mm) – t min RE 91001-01-X-B2/01.2016, Bosch Rexroth AG...

  • Page 28

    Installation position Air bleed Filling t min t min t min Note Port F is part of the external piping and must be provided on the customer side to make filling and air bleeding easier. Bosch Rexroth AG, RE 91001-01-X-B2/01.2016...

  • Page 29: Project Planning Notes

    90312 or the instruction manual. ▶ Not all variants of the product are approved for use in safety functions according to ISO 13849. Please consult the responsible contact person at Bosch Rexroth if you require reliability parameters (e.g. MTTFd) for functional safety.

  • Page 30

    A2FM for explosive areas | Axial piston fixed motor Bosch Rexroth AG © Bosch Rexroth AG 2016. All rights reserved, also regarding any disposal, Mobile Applications exploitation, reproduction, editing, distribution, as well as in the event of Glockeraustraße 4 applications for industrial property rights. The data specified above only serve 89275 Elchingen, Germany to describe the product.

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