Size		NG		80	107	140	160	200	250
Geometric displacement, per revolution		V_{g max}	cm³	80	107	140	160	200	250
		V_{g min}	cm³	0	0	0	0	0	0
		V_{g x}	cm³	51	68	88	61	76	205
Maximum rotational speed(while adhering to the maximum permissible inlet flow)	at V_{g max}	n_nom	rpm	3900	3550	3250	3100	2900	2700
	at V_g < V_{g x}	n_max	rpm	6150	5600	5150	4900	4600	3300
	where V_{g 0}	n_max	rpm	7350	6300	5750	5500	5100	3300
Inlet flow	at n_nom and V_{g max}	q_{v max}	l/min	312	380	455	496	580	675
Torque	at V_{g max} and Δp = 400 bar	T	Nm	509	681	891	1019	1273	‒
Torque	at V_{g max} and Δp = 350 bar	T	Nm	446	596	778	891	1114	1391
Rotary stiffness	V_{g max} to V_g/2	c_min	kNm/rad	16	21	34	35	44	60
Rotary stiffness	V_g/2 to 0 (interpolated)	c_min	kNm/rad	48	65	93	105	130	181
Moment of inertia for rotary group		J_TW	kgm²	0,008	0.0127	0.0207	0.0253	0.0353	0,061
Maximum angular acceleration		α	rad/s²	24000	19000	11000	11000	11000	10000
Case volume		V	l	1.2	1.5	1.8	2.4	2.7	3
Weight approx.		m	kg	36	46	61	62	78	100

Specifications:

Trademark		SY-Hydraulic
Transport Package		Standard Export Wooden Case
Certification		ISO9001: 2000
Type		Harvester axial piston motor
Production Capacity		1000 pcs/month
HS Code		8412299090
Application		Agricultural machinery (harvesters, tractors)
Maximum speed		6300 rpm
Delivery Time		15-30 Days after Payment
Displacement		71-250cc

Applications:

1. Injection molding machine drives): Low-noise design (<75 dB) meets factory standards, and precise displacement control ensures injection stability‌.

2. Paper machine winding systems: Precise flow control (±1.5% error) ensures uniform paper tension, and copper alloy sleeves extend maintenance intervals‌.

3. Continuous casting machines: High-temperature plunger rods (115°C) suit molten metal environments, and dual pressure ratings handle molten steel impacts‌.

4. Waste compactors: Eco-friendly oils meet municipal standards, and integrated counterbalance valves prevent compactor slippage‌.

5. Railway maintenance equipment (tampers): Large swivel angle (±40°) suits tamping machine paths, and high power density drives multi-axis synchronization‌.

Competitive Advantage:

1. Spherical oil distribution in axial piston motor‌ achieves 360° self-aligning sealing with leakage <0.1%, extending oil replacement intervals‌.

2. High-strength alloy steel plunger rods‌ withstand 35MPa pressure, reducing wear by 40% in metallurgical rolling mills‌.

3. Smart diagnostic interfaces‌ piston motor enable remote monitoring of oil temperature/pressure, cutting downtime by 30%‌.

4. Energy-regenerative axial piston motor‌ recover braking energy via closed circuits, reducing total consumption by 15%-20%‌.

5. Full-speed range (0-3000 rpm)‌ supports military vehicles in low-speed climbing and high-speed maneuvers with <5% torque fluctuation‌.

The Analysis For Rexroth A6VM Piston Motor Common Breakdown:

1. Sticking of displacement mechanism: Displacement switching delay >0.5 seconds

Repair: Ultrasonic cleaning of control piston and flushing with VG46 anti-wear hydraulic oil

2. Bearing pitting: Periodic abnormal noise in specific speed ranges

Repair: Replace FAG/INA bearings with cryogenic pretreatment (-196℃ liquid nitrogen)

3. Unstable control pressure: Actuator speed fluctuation >±5%

Repair: Check pilot relief valve spring stiffness and test accumulator precharge pressure

4. Excessive case pressure: Case drain temperature >80℃

Repair: Check return line backpressure (<0.3MPa) and clean case drain passages

5. Internal leakage in servo piston: Swashplate position drift

Repair: Replace servo piston seals and check clearance (≤15μm)

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