Tandem Pump A4vg90 Hydraulic Axial Piston Pump for Combine Harvester

• Customization: Available
• After-sales Service: 24 Hours Online
• Warranty: 1 Year
• Model NO.: A4VG90
• Structure: Axial Plunger Pump
• Cylinder Number: Multi Cylinder
• Drive Mode: Mechanically Driven Pump
• Pump Shaft Position: Vertical
• Type: Radial
• Power: Pneumatic
• Straight Shaft Swashplate Piston Type: Pressureoil
• Radial Plunger Pump Type: Axial Flow
• Model: A4vg90+Avg90
• Delivery Date: 7 Days
• Application: Construction Machinery
• Color: Customized
• Transport Package: Wooden Case for Export
• Specification: hydraulic
• Trademark: FOCOR
• Origin: China
• HS Code: 8413503190
• Production Capacity: 2000 Sets/Month
• Package Size: 40.00cm * 50.00cm * 60.00cm
• Package Gross Weight: 45.000kg

Product Description

Tandem Pump A4VG90+AVG90 Hydraulic Piston Pump for combine harvester

Product Description

Brueninghaus Hydromatik Rexroth A4VG pump: Hydraulic variable displacement axial pump A4VG40, A4VG56, A4VG71, A4VG90, A4VG125, A4VG180, A4VG250

The A4VG axial piston variable pump in swash plate design for hydrostatic closed circuit transmissions
- Flow is proportional to drive speed and displacement and is infinitely variable
- Output flow increases with the swivel angle of the swash plate from 0 to its maximum value
- Flow direction changes smoothly when the swash plate is moved through the neutral position
- A wide range of highly adaptable control devices is available for different control and regulating functions
- The pump is equipped with two pressure-relief valves on the high pressure ports to protect the hydrostatic transmission (pump and motor) from overload
- The high-pressure relief valves also function as boost valves
- The integrated boost pump acts as a feed and control oil pump
- The maximum boost pressure is limited by a built-in boost pressure relief valve
- The integral pressure cut-off is standard

Product Parameters

Technical Data 

Table of values (theoretical values, without efficiency and tolerances; values rounded)

Size			A4VG40	A4VG56	A4VG71	A4VG90	A4VG125	A4VG180	A4VG250
Displacement variable pump	Vg max	cm3	40	56	71	90	125	180	250
boost pump (20 bar)	Vg Sp	cm3	8.6	11.6	19.6	19.6	28.3	39.8	52.5
Speed maximum Vg max	conti.	rpm	4000	3600	3300	3050	2850	2500	2400
limited maximum	limited	rpm	4200	3900	3600	3300	3250	2900	2600
intermittent max.	Min.	rpm	5000	4500	4100	3800	3450	3000	2700
	nmin	rpm	500	500	500	500	500	500	500
Flow continuous and Vg max		l/min	160	202	234	275	356	450	600
Power continuous Vg max	400 bar	kW	107	134	156	183	237	300	400
Torque at Vg max	400 bar	Nm	255	356	451	572	795	1144	1590
	100 bar	Nm	63.5	89	112.8	143	198.8	286	398
Moment of inertia	JGR	kgm2	0.0038	0.0066	0.0097	0.0149	0.0232	0.0444	0.0983
Angular acceleration	α	rad/s2	30000	24000	21000	18000	14000	11000	6700
Filling capacity	V	L	1.1	1.5	1.3	1.5	2.1	3.1	6.3
Weight approx.	m	kg	31	38	50	60	80	101	156

Dimensions

Packaging & Shipping