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 differential between the high-pressure side and the low-pressure 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

Field of application according to ATEX 2014/34/EU
Gas: II 2G ck IIB Tx in accordance with DIN EN 13463‑1:2009, DIN EN 13463-5:2011

Size		NG		10	12	16	23	28	32	45	56	63	80	90	107	125	160	180
Displacement geometric, per revolution		V_g	cm³	10.3	12	16	22.9	28.1	32	45.6	56.1	63	80.4	90	106.7	125	160.4	180
Speed Maximum¹⁾	Temperature class T3	n_max	rpm	8000	8000	8000	6300	6300	6300	5600	5600	5000	4500	4500	4000	4000	3600	3600
Speed Maximum¹⁾	Temperature class T4	n_max	rpm	4000	4000	4000	3150	3150	3150	2800	2500	2500	2250	2250	2000	2000	1800	1800
Inlet flow²⁾		q_{v max}	l/min	82	96	128	144	177	202	255	281	315	362	405	427	500	577	648
Torque³⁾	at ΔP = 350 bar	T	Nm	57	67	89	128	157	178	254	313	351	448	501	594	696	893	1003
Torque³⁾	at ΔP = 400 bar	T	Nm	66	76	102	146	179	204	290	357	401	512	573	679	796	1021	1146
Rotary stiffness		c_min	kNm/rad	0.92	1.25	1.59	2.56	2.93	3.12	4.18	5.94	6.25	8.73	9.14	11.2	11.9	17.4	18.2
Moment of inertia for rotary group		J_TW	kgm²	0.0004	0.0004	0.0004	0.0012	0.0012	0.0012	0.0024	0.0042	0.0042	0.0072	0.0072	0.0116	0.0116	0.0220	0.0220
Maximum angular acceleration		α	rad/s²	5000	5000	5000	6500	6500	6500	14600	7500	7500	6000	6000	4500	4500	3500	3500
Case volume		V	l	0.17	0.17	0.17	0.20	0.20	0.20	0.33	0.45	0.45	0.55	0.55	0.8	0.8	1.1	1.1
Weight approx.		m	kg	5.4	5.4	5.4	9.5	9.5	9.5	13.5	18	18	23	23	32	32	45	45

A2FM series 6x Rexroth Hydraulic Axial Piston Fixed Motor

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