Fixed Displacement Open Circuit Axial Piston Pump, K4FO

K4FOReplacement 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
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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 & PressingForging & Pressing
  • MetallurgicalMetallurgical
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Guangdong KEDA Hydraulic Technology Co., Ltd. is an industry leader in producing high-pressure piston pumps and high-speed motors, leveraging our core technology to provide superior technical solutions for customers worldwide. Our products including hydraulic pumps, hydraulic motors and hydraulic spare parts are used across a wide range of industries, including metallurgy, forging, TBM, building materials, pile drivers, mobile machinery, and marine engineering. We have domestic and international sales and service bases to ensure fast and satisfactory services for all our customers. As part of KEDA Industrial Group Co., Ltd. (stock code 600499), we strive to offer innovative solutions that exceed expectations every time.

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