K4FO Replacement hydraulic pump for A4FO axial piston fixed pump

All-purpose high pressure pump with through drive Size 22-500 Nominal pressure up to 350 bar Maximum pressure up to 400 bar Open circuit Features Axial piston fixed displacement pump with swashplate, designed for hydrostatic drives in open circuits For mobile and stationary applications Flow is proportional to drive speed and displacement High power/weight ratio High total efficiency Optimized size for particular installation Excellent suction characteristics Low noise level Long service life Through drive for mounting additional pumps Technical Parameters

Size				22	28	71	125	180	250/H1)	500/H2)
Displacement		Vg	cm³	22	28	71	125	180	250	500
Displacement,geometric,per revolution
Max. rotating speed2)		nnom	rpm	3600	3000	2200	1800	1800	1500/ 1900	1320/ 1500
Max. rotating speed3)		nmax	rpm	4500	3750	2700	2200	2100	1800/ 2100	1600/ 1800
Flow	At Vg and nnom	qV	l/min	79	84	156	225	324	375/475	660/750
Power	At Vg,nnom,and at Δp = 400 bar	P	kW	53	56	914)	1314)	1894)	219/2774)	385/4384)
Torque	At Vg and Δp = 400 bar	T	Nm	140	178	3964)	6964)	10034)	13934)	27854)
Rotary stiffness of through shaft	S	c	kNm/rad	29.9	29.9	=	-	-	-	-
	P	c	kNm/rad	-	-	146	260	328	527	1145
	Z	c	kNm/rad	-	-	146	263	332	543	1136
Moment of inertia for rotary group		JGR	kgm2	0.0017	0.0017	0.0121	0.0300	0.055	0.0959	0.3325
Max. angular acceleration		α	rad/s2	38000	38000	20000	13000	10000	8000	4800
Case volume		V	I	0.3	0.3	2.0	3.0	4.0	7.0	11.0
Weight (approx.)		m	kg	13.5	13.5	34	61	76	120	220

Description

K4FO fixed displacement piston pumps for hydrostatic drives in open circuits, as a replacement for A4FO, are axial piston rotary group pump with swashplate design.

Applications
Forging & Pressing

Metallurgical