Hydraulic parts--auto parts internal gear pump  

About Us

Liuzhou Shuangji Machinery is an experienced and professional manufacturer of hydraulic cylinders. With over 12 years' experience in manufacturing, we can produce all kinds of hydraulic cylinders which include KRM series cylinder, telescopic cylinder, small hydraulic cylinder, OEM cylinder, truck body,Gear pump, PTO, ect.. Our products can be widely used in dump truck, tipper, and trailer for Mitsubishi, ISUZU, Volvo, etc.

Single-action hydraulic cylinder is our superstar production, it is recognised around the world for its good performance.

Gear pump for Gear pump

The pump uses high strengthcast iron material. The ability to withstand strong internal structure using dual-gold side plate, control valve and check valve in conjunctionwith the pump body and many other advantagedtechnologies. The pump has a high work pressure, long service life. The characterof the hydraulic system to simplify integration is an ideal power source for the hydraulic system of dump truck.       

performance parameter

Theoretical displacement:136ml/r 

  Rated pressure:80kgf/cm2        

control valve lever's steel wire action:15kg  

The highest test pressure:210kgf/ cm2

pump gross mass  :37kg   

working condition

Oil temperature range: -20°C~80°C

 Oil viscosity range: 10~75C.S.6

 Oil filter accuracy≤25um

Oil height≤     500mm

Drive: direct drive with flexible coupling    

Rotation direction: counter-clockwise (from the shaft end view)

Quality Control 
Our test including: Pressure test, Anti-Leakage test, Salt spray test, and Simulated field performance testing. All of the products are 100% tested before shipping to ensure reliable quality 

With over 10years experiences on hydraulic cylinder, we can supply you: 

1. Hydraulic products with long life, superior performance and high reliability. 
2. Our quality management system strictly implement ISO/TS 16949: 2009 
3. Reliable quality, reasonable price and prompt delivery 
4. Non-standard hydraulic cylinder according to customer's requests. 

model of Gear pumps:KP35, KP55, GPG55, KP75A, KP75B, KP1403, KP1405A, KP1505,ect.

Welcome to contact me