Concrete pump truck hydraulic cylinders
 

Material of cylinder barrels: Based on calculation of loading and yielding point strength, the cylinder adopts 20MnTiB to adjust the material so that its tensile strength(σb/Mpa): >=1130, yield point(σs/Mpa): >=930 and the barrel wall thickness can be reduced to its lowest point and thus reduce the weight of the cylinder. 

Material of piston and guide: The use of 7075 aluminum alloy can maintain its strength while reduce its weight. 

Welding: It adopts such processes as weld preheating, infrared temperature monitor ring and post weld treatment, and uses ultrasonic inspection to prevent weld defect. 

Selection of sealing parts: The sealing parts uses PARKER sealing gasket imported from America and BUSAK SHAMBAN supporting ring to ensure the sealing performance of the cylinder and a stable quality. 

The cylinder guide sleeve adopts stuck key structure. It is east to assemble and transport. The use of Korean imported automatic test bench can display the result in a digital way. The oil for pressure test reaches the NAS VII standard and the cylinder cleaness reachs NAS VII, which ensures a stable performance and long working life. 

Main Products: Pump truck leg support cylinder
Pump truck arm support cylinder
Pump truck amplitude cylinder
Pump truck fore leg support telescopic cylinder