BP4VG Closed Circuit Pump

Product Advantages

The swash plate is designed with an axial piston variable pump for closed circuit hydrostatic transmission.

When the swash plate passes the neutral position, the flow direction of the hydraulic oil will change smoothly.

Two pressure relief valves are installed on the high pressure side to prevent overload.

The built-in charge pump acts as charge pump and control.

The maximum charge pressure is limited by the built-in low pressure relief valve.

Brand new slewing components and bearings, the transmission efficiency is improved, and the input speed increased.

One-piece design at the rear of the shell reduces leakage points.

Optimized shell design to reduce vibration and noise.

Electric proportional displacement control to meet the application requirements of multiple industries.

45° oil outlet design to optimize pipeline connection.

Optional flush valve, directly installed on the pump body.

Technical Specs

Specification		45	60	75	100	135	175	280
Displacement cc/rev		45	60	75.6	100	135	175.4	280
Shaft speed	Rated rpm	3300	3600	3300	3000	2850	2650	2400
	Maximum rpm	3550	3900	3600	3300	3250	2800	2550
	Minimum rpm	500	500	500	500	500	500	500
System pressure	Rated bar	380	400	400	400	400	450	450
	Maximum bar	420	450	450	450	450	500	500
	Minimum low loop pressure (bar) (Above charge pump)	10	10	10	10	10	10	10
Charge pump Displacement cc/rev		8.6	11.6	27	27	28.3	39	60
Shell pressure bar	Continuous pressure bar	2	2	2	2	2	1.7	1.7
Shell pressure bar	Max.(At cold start) bar	-	-	-	-	-	5.2	-
Suction pressure (absolute pressure) bar	Rated bar Oil viscosity ≤ 30mm²/s	0.8	0.8	0.8	0.8	0.8	0.8	0.8
Suction pressure (absolute pressure) bar	Maximum bar	5	5	5	5	5	6	5
Oil viscosity mm²/s		10-1000，Best range: 16~36
Oil temperature ℃		-20~95
Oil cleanliness		ISO 4406 level 20/18/15 or higher
Weight (excluding auxiliary flange)		33	38	58	62	80	115	179.4

Applications

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