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R902137736 A2FM107/61W-VZB010 REXROTH  AXIAL-PISTON MOTOR R902137736 A2FM107/61W-VZB010 REXROTH  AXIAL-PISTON MOTOR R902137736 A2FM107/61W-VZB010 REXROTH  AXIAL-PISTON MOTOR R902137736 A2FM107/61W-VZB010 REXROTH  AXIAL-PISTON MOTOR

R902137736 A2FM107/61W-VZB010 REXROTH AXIAL-PISTON MOTOR

Material number Designation R902035487 AXIAL-PISTON MOTOR A2FM107/61W-VZB010J R902072537 AXIAL-PISTON MOTOR...
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Address:4 Pemimpin Drive #03-09, Lip Hing Industrial Building Singapore 576147

Product Description

Material number Designation
R902035487 AXIAL-PISTON MOTOR
A2FM107/61W-VZB010J
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Technical data

Table of values

Size

5 10 12 16 23 28 32 107 125 160 180 200 250 355 500 710 1000

Displacement
geometric, per revolution

Vg

cm³

4.93 10.3 12 16 22.9 28.1 32 106.7 125 160.4 180 200 250 355 500 710 1000

Nominal pressure

pnom

bar

315 400 400 400 400 400 400 400 400 400 400 400 350 350 350 350 350

Maximum pressure

pmax

bar

350 450 450 450 450 450 450 450 450 450 450 450 400 400 400 400 400

Maximum speed

nnom 1)

rpm

10000 8000 8000 8000 6300 6300 6300 4000 4000 3600 3600 2750 2700 2240 2000 1600 1800

nmax 2)

rpm

11000 8800 8800 8800 6900 6900 6900 4400 4400 4000 4000 3000

Inlet flow 3)

at nnom

qV

l/min

49 82 96 128 144 177 202 427 500 577 648 550 675 795 1000 1136 1600

Torque 4)

at pnom

M

Nm

24.7 66 76 102 146 179 204 679 796 1021 1146 1273 1393 1978 2785 3955 5570

Rotary stiffness

c

kNm/rad

0.63 0.92 1.25 1.59 2.56 2.93 3.12 11.2 11.9 17.4 18.2 57.3 73.1 96.1 144 270 324

Moment of inertia for rotary group

JTW

kg·m²

0.00006 0.0004 0.0004 0.0004 0.0012 0.0012 0.0012 0.0116 0.0116 0.022 0.022 0.0353 0.061 0.102 0.178 0.55 0.55

Maximum angular acceleration

ɑ

rad/s²

5000 5000 5000 5000 6500 6500 6500 4500 4500 3500 3500 11000 10000 8300 5500 4300 4500

Case volume

V

l

0.17 0.17 0.17 0.2 0.2 0.2 0.8 0.8 1.1 1.1 2.7 2.5 3.5 4.2 8 8

Weight (approx.)

m

kg

2.5 5.4 5.4 5.4 9.5 9.5 9.5 32 32 45 45 66 73 110 155 325 336
1) These values are valid at:
- for the optimum viscosity range from vopt = 36 to 16 mm2/s
- with hydraulic fluid based on mineral oils
2) Intermittent maximum speed: overspeed for unload and overhauling processest, t
3) Restriction of input flow with counterbalance valve
4) Torque without radial force, with radial force see table "Permissible radial and axial forces of the drive shafts"

Note

  • The values in the table are theoretical values, without consideration of efficiencies and tolerances. The values are rounded.
  • Exceeding the maximum or falling below the minimum permissible values can lead to a loss of function, a reduction in operational service life or total destruction of the axial piston unit. Other permissible limit values, such as speed variation, reduced angular acceleration as a function of the frequency and the permissible angular acceleration at start (lower than the maximum angular acceleration) can be found in data sheet 90261.

Speed range

No limit to minimum speed nmin. If uniformity of motion is required, speed nmin must not be less than 50 rpm.

Determining the operating characteristics

Inlet flow

[l/min]

Rotational speed

[rpm]

Torque

[Nm]

Power

[kW]

Key

Vg

Displacement per revolution [cm3]

Δp

Differential pressure [bar]

n

Rotational speed [rpm]

ηv

Volumetric efficiency

ηhm

Hydraulic-mechanical efficiency

ηt

Total efficiency (ηt = ηv • ηhm)

Hydraulic fluids

The axial piston unit is designed for operation with mineral oil HLP according to DIN 51524.

Application instructions and requirements for hydraulic fluids should be taken from the following data sheets before the start of project planning:

Viscosity and temperature of hydraulic fluids

Viscosity

Shaft
seal

Temperature1)

Comment

Cold start

νmax ≤ 1600 mm²/s

NBR2)

ϑSt ≥ -40 °C

t ≤ 3 min, without load (p ≤ 50 bar), n ≤ 1000 rpm,
permissible temperature difference between axial piston unit and hydraulic fluid max. 25 K

FKM

ϑSt ≥ -25 °C

Warm-up phase

ν = 400 … 1600 mm²/s

t ≤ 15 min, p ≤ 0.7 • pnom and n ≤ 0.5 • nnom

Continuous operation

ν = 10 … 400 mm²/s3)

NBR2)

ϑ ≤ +78 °C

measured at port T

FKM

ϑ ≤ +103 °C

νopt = 16 … 36 mm²/s

range of optimum operating viscosity and efficiency

Short-term operation

νmin = 7 … 10 mm²/s

NBR2)

ϑ ≤ +78 °C

t ≤ 3 min, p ≤ 0.3 • pnom

measured at port T

FKM

ϑ ≤ +103 °C

1) If the specified temperatures cannot be maintained due to extreme operating parameters, please contact us.
2) Special version, please contact us.
3) Equates e.g. with the VG 46 a temperature range of +5 °C to +85 °C (see selection diagram)

Note

To reduce high temperature of the hydraulic fluid in the axial piston unit we recommend the use of a flushing and boost pressure valve (see chapter Extended functions and versions).

Dependent on the unit size flushing the case at port U can be carried out alternatively.

Explanatory note regarding the selection of hydraulic fluid

The hydraulic fluid should be selected such that the operating viscosity in the operating temperature range is within the optimum range (vopt see selection diagram).

Selection diagram

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 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 in short-term operation) at the drain port, a cleanliness level of at least 19/17/14 according to ISO 4406 is required.

For example, the viscosity is 10 mm²/s at:

  • HLP 32 a temperature of 73°C
  • HLP 46 a temperature of 85°C

Operating pressure range

Pressure at working port A or B (high-pressure side)

Definition

Nominal pressure

pnom

see table of values

The nominal pressure corresponds to the maximum design pressure.

Maximum pressure

pmax

see table of values

The maximum pressure corresponds to the maximum operating pressure within the single operating period. The sum of the single operating periods must not exceed the total operating period.

Single operating period

10 s

Total operating period

300 h

Minimum pressure

pHP min

25 bar

Minimum pressure on high-pressure side (port A or B) required to prevent damage to the axial piston unit.

Minimum pressure at inlet (pump operating mode)

pE min

see diagram

To prevent damage to the axial piston motor in pump mode (change of high-pressure side with unchanged direction of rotation, e.g. when braking),a minimum pressure must be guaranteed at the working port (inlet). The minimum pressure depends on the rotational speed and displacement of the axial piston unit.

Total pressure

pSu

700 bar

The summation pressure is the sum of the pressures at both work ports (A and B).

Rate of pressure change

Definition

with integrated pressure relief valve

RA max

9000 bar/s

Maximum permissible rate of pressure build-up and reduction during a pressure change over the entire pressure range.

without pressure relief valve

RA max

16000 bar/s

Case pressure at port T

Definition

Continuous differential pressure

ΔpT cont

2 bar

Maximum averaged differential pressure at the shaft seal (case to ambient)

Pressure peaks

pT peak

10 bar

t

Note

  • Working pressure range valid when using hydraulic fluids based on mineral oils. Values for other hydraulic fluids, please contact us.

Minimum pressure at inlet (pump operating mode)

This diagram is only valid for the optimum viscosity range of vopt = 16 to 36 mm2/s

Please contact us if these conditions cannot be satisfied.

Pressure definition

1) Total operating period = t1 + t2 + ... + tn

Rate of pressure change

Maximum differential pressure at the shaft seal, size 10 ... 200

Maximum differential pressure at the shaft seal, size 250 ... 1000

Note

  • The service life of the shaft seal is influenced by the speed of the axial piston unit and the case pressure.
  • The service life decreases with an increase of the mean differential pressure between the case and the ambient pressure and with a higher frequency of pressure spikes.
  • The case pressure must be equal to or higher than the ambient pressure.

Direction of flow

Direction of rotation, viewed on drive shaft

clockwise

counter-clockwise

A to B

B to A

Permissible radial and axial forces of the drive shaft

Size

5 10 12 16 23 28 32 107 125 160 180 200 250 355 500 710 1000

Drive shaft

Code

B, C Z, P A, B Z, P A, B A, B Z, P A, B Z, P A, B A, B Z, P A, B A, B Z, P A, B A, B A, B Z, P Z, P Z, P Z, P Z, P

mm

12 20 25 20 25 25 25 30 25 30 30 40 45 45 45 45 50 50 50 60 70 90 90

Maximum radial force
at distance a
(from shaft collar)

Fq max

kN

1.6 3 3.2 3 3.2 3.2 5.7 5.4 5.7 5.4 5.4 13.6 14.1 14.1 18.1 18.3 18.3 20.3 1.2 1) 1.5 1) 1.9 1) 3 1) 2.6 1)

a

mm

12 16 16 16 16 16 16 16 16 16 16 20 20 20 25 25 25 25 41 52.5 52.5 67.5 67.5

Permitted torque at Fq max

Tq max

Nm

24.7 66 66 76 76 102 146 146 179 179 204 679 679 796 1021 1021 1146 1273

Permitted differential pressure at Fq max

Δpq max

bar

315 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400 400

Maximum axial force, when standstill or in non-pressurized conditions

+ Fax max

N

0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

- Fax max

N

180 320 320 320 320 320 500 500 500 500 500 1250 1250 1250 1600 1600 1600 1600 2000 2500 3000 4400 4400

Maximum axial force, per bar operating pressure

+ Fax max

N/bar

1.5 3 3 3 3 3 5.2 5.2 5.2 5.2 5.2 12.9 12.9 12.9 16.7 16.7 16.7 5.2
1) When at a standstill or when axial piston unit operating in non-pressurized conditions. Higher forces are permissible when under pressure, please contact us.

General notes

  • The values given are maximum values and do not apply to continuous operation.
  • The axial force in direction -Fax is to be avoided as the lifetime of the bearing is reduced.
  • Special requirements apply in the case of belt drives. Please contact us.

Notes for sizes 250 ... 1000:

  • In case of radial forces limited performance data is valid. Please contact us.
  • In case of axial forces during operation of the unit please contact us.

Effect of radial force Fq on the service life of bearings

By selecting a suitable direction of radial force Fq the load on the bearings caused by the internal rotary group forces can be reduced, thus optimizing the service life of the bearings. Recommended position of mating gear is dependent on direction of rotation. Examples:

Toothed gear drive, size 5 … 180

Toothed gear drive, size 200 … 1000

1

Direction of rotation "counter-clockwise", pressure at port B

2

Direction of rotation "clockwise", pressure at port A

3

Direction of rotation "bidirectional"

Long-life bearing

Size 250 to 1000

For long life cycle and use with HF hydraulic fluids. Identical external dimensions as design with standard bearing. Subsequent modification to long-life bearing is possible. Bearing and housing flushing via connection U is recommended.

Bearing flushing

Flushing flow (recommended)

Size

250 355 500 710 1000

Flushing flow qv

l/min

10 16 16 16 16

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