Bent Axis Piston Pump and Motor, A2F Manufacturer

Bent Axis Piston Pump and Motor, A2F

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, A2F

Descriptions
The OSA2F bent axis piston pump and motor comes with fixed displacement. It is applied to hydrostatic drive system in either open circuit or closed circuit. Working as a hydraulic pump, the flow is in direct proportion to its drive speed and displacement. While working as a hydraulic motor, its output speed is in proportion to flow and is reversely proportional to the displacement, and output torque increases as the differential pressure between high pressure side and low pressure side grows.

OSA2F Fixed Displacement Pump

Top View

Rear Cover

Applications
The bent axis piston pump and motor is commonly founded in the hydraulic systems of metal forming machinery, cement machinery and ceramic machinery.

Features
1. The fixed displacement piston pump is provided with the rotor group in spherical valve plate design, ensuring self-centering function, combined with low peripheral speed and high efficiency.
2. Durable ball bearings and roller bearings are designed for long service life.
3. Drive shaft of the hydraulic system components can bear radial load.
4. ISO mounting flange, same with that of A6V series variable displacement motor;
5. 35MPa nominal pressure and 45-160ml/r displacement

Structure Chart

Technical Parameters

Parameter List

Size					45	55	63	80	107	125	160
Displacement			V_g	mL /r	44.3	54.8	63	80	107	125	160
Max. speed	Closed circuit		n_max	r/min	3750	3750	4000	3350	3000	3150	2650
	Open circuit	0.09MPa	n_0.09	r/min	2360	2360	2550	2120	1900	2120	1650
		0.10MPa	n_0.10	r/min	2500	2500	2700	2240	2000	2240	1750
		0.15MPa	n_0.15	r/min	3000	3000	3300	2750	2450	2750	2100
Max. flow	Closed circuit	n= n_max	Q_max	L/min	166	206	252	268	321	394	424
	Open circuit	n=n_0.09	Q_0.09	L/min	122	125	156	164	197	257	256
		n=n_0.10	Q_0.10	L/min	129	133	165	174	208	272	272
		n=n_0.15	Q_0.15	L/min	157	160	202	213	254	334	326
Max. power	Closed circuit	Q= Q_max	P_max	kW	97	120	147	156	187	230	247
	Open circuit	Q=Q_0.09	P_0.09	kW	71	75	93	99	119	154	154
		Q=Q_0.10	P_0.10	kW	75	80	99	105	125	163	163
		Q=Q_0.15	P_0.15	kW	92	96	121	128	153	200	196
Motor speed n=1450r/min Δp =35MPa	Flow	Closed circuit	Q_Ec	L/min	64.2	79.5	91.3	116	155	181	232
	Flow	Open circuit	Q_Eo	L/min	62.3	77.1	88.6	113	151	176	225
	Power		P_E	kW	38	46	53	68	91	106	135
Torque		Δp =10MPa	T₁₀	Nm	70.4	87	100	128	170	198	254
Torque		Δp =35MPa	T_max	Nm	247	305	350	446	594	693	889
Weight				kg	23	23	33	33	44	63	63

Operating Pressure Range (Pump)
Inlet Port Operating Pressure (Port S, A or B):
Minimum pressure: Ps min=0.08 bar

Outlet Port Operating Pressure:
Nominal Pressure: pn= 35MPa
Maximum Pressure: pmax= 40MPa

Operating Pressure Range (Motor)
Port A or B Pressure
Nominal Pressure: pn= 35MPa
Maximum Pressure: pmax= 40MPa

The sum of port A pressure and port B pressure can not exceed 70Mpa (The Max. pressure at each side is 40Mpa)

Allowable Casing Pressure
Maximum Pressure: PL max = 0.2MPa (Absolute Pressure)

Installation position is optional and the casing must be always filled with oil.

Hydraulic Fluid
Viscosity Range:
νmin = 10mm2/s Short period
νmax = 1000mm2/s Short period
Optimal operating viscosity:
νopt =16~36mm2/s
Fluid temperature range:
θmin = -25℃
θmax = 80℃

Recommended Viscosity Grade

Operating temperature range	Viscosity grade	Viscosity at 40℃
≥ 30~40℃	VG22	22mm ² /s
≥ 40~50℃	VG32	32mm ² /s
≥ 50~60℃	VG46	46mm ² /s
≥ 60~70℃	VG68	68mm ² /s
≥ 70~80℃	VG100	100mm ² /s

Note: For filtration of hydraulic fluid, filter fineness is great to be 10μm.

Type Code

OS-	A2F	160	R	2	P	1
	1	2	3	4	5	6

1-Mechanical Type

Axial piston, bent axis, fixed displacement pump/motor

A2F

2- Size

Nominal Displacement mL /r

107

125

160

3- Rotating Direction (View on Shaft End)

Clockwise	R
Counterclockwise	L
Double direction (Not suitable for pump in open circuit design)	W

4- Series

	●	●	―	―	●	―	―	1
	―	●	●	●	●	●	●	2

5- Shaft End

Keyed shaft GB1096	P
Splined shaft DIN5480	Z
Splined shaft GB3478.1	S

6-Ports Type

Port A and B, on two sides of rear cover, threaded	●	●	●	●	●	●	●	1
Port A and B, on two sides of rear cover, flange	●	●	●	●	●	●	●	2
Port B on the side of rear cover, SAE flange; Port S on rear side, flange	●	●	●	●	●	●	●	3

●=available，○=In preparation，―=without

Dimensions

Size	α°	A1	A2	A3	A4	A5	A6	φA7	A8	A9	A10	φA11	φA12	A13
45	20	384	20	-	77	-	63	125	10	M12	28	160	16	150
55	25	381	20	108	77	32	63	125	10	M12	28	160	16	150
63	20	452	23	137	-	32	-	140	10	M12	28	180	16	165
80	25	450	23	137	-	32	-	140	10	M12	28	180	16	165
107	25	476	25	130	90	40	80	160	12	M12	28	200	20	190
125	20	552	28	156	-	40	-	180	10	M16	36	224	20	210
160	25	547	28	156	-	40	-	180	10	M16	36	224	20	210

Size	φA14	A15	A16	A17	A18	A19	A20	A21	A22	A23
45	30	60	8	W30 × 2 × 14 × 9g	35	EXT14Z × 2m × 30R × 5f	35	31.5	150	183
55	30	60	8	W30 × 2 × 14 × 9g	35	EXT14Z × 2m × 30R × 5f	35	31.5	150	183
63	35	70	10	W35 × 2 × 16 × 9g	40	EXT16Z × 2m × 30R × 5f	40	36	173	213
80	35	70	10	W35 × 2 × 16 × 9g	40	EXT16Z × 2m × 30R × 5f	40	36	173	213
107	40	80	12	W40 × 2 × 18 × 9g	45	EXT18Z × 2m × 30R × 5f	45	40	190	230
125	45	90	14	W45 × 2 × 21 × 9g	50	EXT21Z × 2m × 30R × 5f	50	45	212	262
160	45	90	14	W45 × 2 × 21 × 9g	50	EXT21Z × 2m × 30R × 5f	50	45	212	262

Ports

Size	B1	B2	B3	B4	B5	B6	B7	B8	B9	B10	B11
45	132	M33 × 2 depth 18	126	φ19	50.8	23.8	4-M10 depth 16	63	φ19	50.8	23.8
55	132	M33 × 2 depth 18	126	φ19	50.8	23.8	4-M10 depth 16	63	φ19	50.8	23.8
63	156	M42 × 2 depth 20	150	φ25	57.2	27.8	4-M12 depth 16	75	φ25	57.2	27.8
80	156	M42 × 2 depth 20	150	φ25	57.2	27.8	4-M12 depth 16	75	φ25	57.2	27.8
107	165	M42 × 2 depth 20	160	φ25	57.2	27.8	4-M12 depth 18	80	φ25	57.2	27.8
125	195	M48 × 2 depth 22	190	φ32	66.7	31.8	4-M14 depth 21	95	φ32	66.7	31.8
160	195	M48 × 2 depth 22	190	φ32	66.7	31.8	4-M14 depth 21	95	φ32	66.7	31.8

Size	B12	B13	B14	B15	B16	B17	Oil drain port T
45	4-M10 depth 16	29	φ42	48	48	4-M10 depth 16	M18 × 1.5
55	4-M10 depth 16	29	φ42	48	48	4-M10 depth 16	M18 × 1.5
63	4-M12 depth 16	35.5	φ53	60	60	4-M12 depth 18	M18 × 1.5
80	4-M12 depth 16	35.5	φ53	60	60	4-M12 depth 18	M18 × 1.5
107	4-M12 depth 18	35.5	φ53	60	60	4-M12 depth 18	M18 × 1.5
125	4-M14 depth 21	42.2	φ68	75	75	4-M16 depth 24	M22 × 1.5
160	4-M14 depth 21	42.2	φ68	75	75	4-M16 depth 24	M22 × 1.5