Yantai Xinren Mechanical & Electrical Equipment Co.,Ltd is one of the largest manufacturers of hydraulic breakers and attachments widely used in the construction,demolition industries in China.Our main products are Hydraulic Breakers,Front Cylinder,Rear Cylinder,Middle Cylinder,Piston,Main Valve and so on.

  Technology:

1.Raw Material: 20 Crmo

2.Equipment:  DOOSAN Maching Center

3.Heatment:Cemented Quenching

4.Hardening Layer:1.5-2 mm

5.Oil Seal:NOK

6.Seal Test and Impact Test before get out the factory

7.Cylinder: CMM Inspector,Axiality controll within 0.003mm

8.Main Valve: Heatment ,the gap controll within 0.025mm

9.Piston: Strict Grinding,Improve the Roughness, the axiality controll within 0.003mm

10.Fixator: Axiality controll within 0.003-0.005 mm