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R902137627 A2FE125/61W-VAL100 GERMANY REXROTH  AXIAL-PISTON MOTOR R902137627 A2FE125/61W-VAL100 GERMANY REXROTH  AXIAL-PISTON MOTOR R902137627 A2FE125/61W-VAL100 GERMANY REXROTH  AXIAL-PISTON MOTOR

R902137627 A2FE125/61W-VAL100 GERMANY REXROTH AXIAL-PISTON MOTOR

Material number Designation R902000340 AXIAL-PISTON MOTOR A2FE125/61W-VAL181-K R902000420 AXIAL-PISTON MOTOR...
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  • T/T,Western Union
  • 50 pcs
  • Germany
  • Rexroth
  • R902137627 A2FE125/61W-VAL100
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Tel : 0065-81416102

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Address:4 Pemimpin Drive #03-09, Lip Hing Industrial Building Singapore 576147

Product Description

Material number Designation
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R902137627 A2FE125/61W-VAL100 Features:

  • Space-saving construction due to recessed mounting flange
  • Easy to install, simply slide into the mechanical gearbox
  • High power density
  • Very high total efficiency
  • High starting efficiency
  • Optional with integrated pressure relief valve
  • Optional with mounted addifitonal valve: counterbalance valve (BVD/BVE), flushing and boost-pressure valve
  • Bent-axis design

R902137627 A2FE125/61W-VAL100 Technical data:

Size

28 32 45 56 63 80 90 107 125 160 180 250 355

Displacement
geometric, per revolution

Vg

cm³

28.1 32 45.6 56.1 63 80.4 90 106.7 125 160.4 180 250 355

Nominal pressure

pnom

bar

400 400 400 400 400 400 400 400 400 400 400 350 350

Maximum pressure

pmax

bar

450 450 450 450 450 450 450 450 450 450 450 400 400

Maximum speed

nnom 1)

rpm

6300 6300 5600 5000 5000 4500 4500 4000 4000 3600 3600 2700 2240

nmax 2)

rpm

6900 6900 6200 5500 5500 5000 5000 4400 4400 4000 4000

Inlet flow 3)

at nnom

qV

l/min

177 202 255 281 315 362 405 427 500 577 648 675 795

Torque 4)

at pnom

M

Nm

179 204 290 357 401 512 573 679 796 1021 1146 1393 1978

Rotary stiffness

c

kNm/rad

2.93 3.12 4.18 5.94 6.25 8.73 9.14 11.2 11.9 17.4 18.2 73.1 96.1

Moment of inertia for rotary group

JTW

kg·m²

0.0012 0.0012 0.0024 0.0042 0.0042 0.0072 0.0072 0.0116 0.0116 0.022 0.022 0.061 0.102

Maximum angular acceleration

ɑ

rad/s²

6500 6500 14600 7500 7500 6000 6000 4500 4500 3500 3500 10000 8300

Case volume

V

l

0.2 0.2 0.33 0.45 0.45 0.55 0.55 0.8 0.8 1.1 1.1 2.5 3.5

Weight (approx.)

m

kg

10.5 10.5 15 18 19 23 25 34 36 47 48 82 110
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 CONTACT US.
  • 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)

  • 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).

    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

    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

  • R902137627 A2FE125/61W-VAL100 GERMANY REXROTH  AXIAL-PISTON MOTOR

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Telephone : 0065-81416102
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Address : 4 Pemimpin Drive #03-09, Lip Hing Industrial Building Singapore 576147

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