Hydraulic motors

Hydraulic Motors

Radial Piston Motors

• Long Life through well proven design
• Shaft end can be subjected to high radial and axial forces
• Only very few moving parts in the rotating group
• Extremely low moment of inertia
• Instrument shaft may be fitted
• Low leakage-built in wear compensation
• High resistance to temperature shock
• Suitable for use with fire resistance fluids
• Low noise level
• Low maintenance
• High speed range
• Small ports are B.S.P. type G threads according to ISO 22811
• Full torque available over complete speed range

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Related links: Screw Pumps
Gear Pumps
Bellhousings

• Uniform running properties at low speeds

• Immediately reversible
• High starting torque
• No counterpressure necessary when operated as a motor
• Suitable for use as pumps with boosted system
• Eminently suitable for control systems
• Control of feed and discharge possible
• May be operated in parallel
• Total efficiency up to 96%
• Direct valve assembley possible
• SAE flange connection 6000 psi J518 1", 1¼", 1½"

Fixed Displacement

Hydraulic motor type		displace- ment	torque		speed range		cont. press.	interm. press.	peak press.	power
Axial piston	Radial piston	cm/rev	ave.spec. Nm/bar	max. Nm	nmin.* rpm	nmax. rpm	pcont. bar	pinterm. bar	ppeak bar	Pcont. kW	Pinterm. kW
AE10		11.4	0.16	39.1	10	3000	210	250	315	7.7	9.2
AE16		16.0	0.22	54.8	5	2500	210	250	315	8.1	9.6
AE22		22.5	0.31	77.0	10	2000	210	250	315	9.0	11.0
AE32		31.5	0.43	108.0	5	2000	210	250	315	12.5	15.0
AE40		40.5	0.56	139.0	3	2000	210	250	315	16.0	19.0
	KM 11	11.1	0.15	31.6	10	3000	140	210	250	3.5	4.3
	RM 11	11.1	0.15	37.7	5	3600	160	250	315	4.7	6.0
	KM 22	22.0	0.31	77.9	10	2250	160	250	315	6.0	7.5
	KM 32	33.0	0.47	118.0	10	1500	160	250	315	6.0	7.5
	KM 45	44.0	0.62	156.0	5	1800	160	250	315	9.5	11.0
	KM 63	66.0	0.95	236.0	5	1200	160	250	315	9.5	11.0
	KM 90	88.4	1.27	267.0	5	900	140	210	250	8.5	10.0
	KM 110	110.0	1.59	333.0	5	750	140	210	250	8.5	10.0
	RM 80N	80.4	1.15	363.0	5	800	250	315	400	12.0	15.0
	RM 125N	126.0	1.80	567.0	5	600	200	315	350	12.0	15.0
	RM 160N	161.0	2.36	742.0	5	800	250	315	400	24.0	30.0
	RM 250N	251.0	3.68	1159.0	5	600	200	315	400	24.0	30.0
	RM 250X	255.0	3.74	1177.0	5	600	250	315	400	28.0	35.0
	RM 355X	359.0	5.26	1657.0	5	550	250	315	400	36.0	45.0
	RM 450X	442.0	6.47	2038.0	5	500	250	315	400	40.0	50.0
	RM 500X	491.0	7.19	2264.0	5	450	250	315	400	40.0	50.0
	RM 710X	704.0	10.30	3249.0	5	500	250	315	400	63.0	80.0
	RM 900X	904.0	13.20	4170.0	5	450	250	315	400	63.0	80.0
	RM 1250X	1266.0	18.50	5837.0	5	540	250	315	400	125.0	150.0
	RM 2000X	2011.0	29.40	9274.0	5	350	250	315	400	130.0	160.0
	RM 3150X	3167.0	46.40	14606.0	3	250	250	315	400	145.0	180.0
	RM 5000X	5278.0	77.30	24343.0	2	150	250	315	400	150.0	190.0
* Lower speed down to 1 rpm can be achieved with additional servo valve control.

Dual Displacement

pcont.  continuous pressure under the condition that average power is less than power cont.
pmax.  max. working pressure when keeping to Pcont. counted on a running time of max. 10% for one hour duty time
ppeak.  short peak pressure at which components still function safely
Pcont.  max. con. output power at max. reverse pressure up to 10 bar. Flushing should be considered for higher performance
Pintermit.  output power over a short time (running time of max. 10% for one hour duty time)

Type	Displacement		Speed Range		Torque		Power cont		Power intermit
	Vg max cc/rev	Vg min cc/rev	Vg max rpm	Vg min rpm	Vg max Nm/bar	Vg min Nm/bar	Vg max kW	Vg min kW	Vg max kW	Vg min kW
	Vg max cc/rev	Vg min cc/rev	Vg max rpm	Vg min rpm	Vg max Nm/bar	Vg min Nm/bar	Vg max kW	Vg min kW	Vg max kW	Vg min kW
RM 750-250X	748	249	5-450	10-600	11.1	3.6	70	22	90	28
RM 1000-355X	1047	349	5-500	10-600	15.3	5.1	80	27	100	30
RM 1400-140X	1433	143	5-350	10-500	21.0	2.0	80	10	100	15
RM 1800-600X	1800	598	5-300	10-450	26.3	8.7	100	33	130	43
RM 3000-1000X	2928	999	5-220	10-350	42.8	14.6	115	39	150	51
RM 4500-2250X	4442	2221	5-140	10-280	65.1	32.5	120	60	160	80

Pressurecont. 210 bar continuous pressure under the condition that average power is less than power cont.
Pressuremax. 250 bar max. working pressure when keeping to Pcont. counted on a running time of max. 10% for one hour duty time.
Pressurepeak. 300 bar short peak pressure at which components still function safely.
Powercont. max. con. output power at max. reverse pressure up to 10 bar. Flushing should be considered for higher performance.
Powerintermit. output power over a short time (running time of max. 10% for one hour duty time).

Hydraulic Brake Motors with Spring Operated Multiple Disc Brakes

Hydraulic brake motors of this design consist of radial piston motors linked to spring operated multiple disc brakes.
In order to open the disc brake the control pressure should be fed via a 2/3 way valve to the control line connection G 1/4.
To reach the maximum braking moment in the stop function, the control pressure must be passed without pressure via the 2/3 way valve and a seperate line to the tank. The braking moments given apply only to pressureless control line connection, and in the case of pressure increase in the control line connection are interupted according to the spring characteristics as soon as the control pressure is reached.
Hydraulic brake motors with a cylindrical drive shaft and feather key according to DIN 6885, female involute splined shaft, or male involute splined drive shaft according to DIN 5480 can be supplied on request.
The drawing of shaft and flange of the brake motors are identical with the radial piston motors. so it is possible to change the motors.

Hydraulic Geared Motors

Hydraulic geared motors of this range consist of radial piston motors linked to a single or two stage coaxial or angular gearbox with or without spring disc brake.

Coaxial hydraulic geared motors offer high torque and small r.p.m. in small dimensions. They are reversible and can be used for universal application.

Angular gearboxes are often used for mobile drive because of short length and free space. Various models for multiple applications available.

Type Z	Type K

Keywayed shaft with parallel key acc. to DIN 6885	male involute splined shaft acc. to DIN 5480/5482

Type H	Type FS

female involute splined shaft acc. to DIN 5480/5482	Hollow cylindrical shaft with torque arm and shrink disc

* Lower speed down to 1 rpm can be achieved with additional servo valve control.