Rexroth A2FE/180 61W-VZL181 Motor

Rexroth A2FE/180 61W-VZL181 Motor is a high-performance product. It has many uses, including the automotive industry, mechanical engineering, and electrotechnical field. The high efficiency of the Rexroth A2FE/180 61W-VZL181 Motor makes it an ideal choice to improve performance and increase savings for businesses.

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Features

Type code

Dimensions

Technical data

Rexroth A2FE/180 61W-VZL181 Motor Service Manual

Features

Very high power density
Very high total efficiency
High starting efficiency
Short installation length
Robust 40° bent-axis technology
Optional with integrated flushing valve

Type code

Dimensions

Technical data

Table of values

Displacement geometric, per revolution		Vg	cm³	56.6	63	81.7	90.5	108.8
Maximum pressure		pmax	bar	420	420	420	420	420
Maximum speed		nnom 1)	rpm	3750	3750	3375	3375	3000
Maximum speed		nmax 2)	rpm	4125	4125	3700	3700	3300
Inlet flow	at nnom = 300 bar	qV	l/min	210	236	270	304	326
Torque 3)	at pnom = 300 bar	M	Nm	270	301	390	432	519
Rotary stiffness		c	kNm/rad	6.83	8.09	7.94	9.84	10.9
Moment of inertia for rotary group		JTW	kg·m²	0.0032	0.0032	0.0034	0.0054	0.0061
Case volume		V	l	0.6	0.6	0.6	0.65	0.65
Weight (approx.)		m	kg	17	17	17	23	23

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 processes, t < 5 s and Δp < 150 bar
3) Torque without radial force, with radial force see table “Permissible radial and axial forces of the drive shafts”

Viscosity and temperature of hydraulic fluids


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
Cold start	νmax ≤ 1600 mm²/s	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
	ν = 10 … 400 mm²/s3)	FKM	ϑ ≤ +103 °C	measured at port T
	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 • pnommeasured at port T
Short-term operation	νmin = 7 … 10 mm²/s	FKM	ϑ ≤ +103 °C	t ≤ 3 min, p ≤ 0.3 • pnommeasured at port T

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)

Selection diagram

Operating pressure range

Maximum pressure	pmax	420 bar	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		200 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).
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
Continuous differential pressure	ΔpT cont	2 bar	Maximum averaged differential pressure at the shaft seal (case to ambient pressure)
Pressure peaks	pT peak	10 bar	t < 0.1 s