Excavator rock breaker RHB68

hydraulic breaker spare parts

· Good quality raw material

· The precision of them is less than 0.05mm 

· The precision of seal groove is 0.03mm , to increase the piston's life 

· Our cylinder(More than 20T), subzero treatment after heat treatment . It is will be lower deformation and less scratch

· We have Vertical grinding machine ( used for more than 30T) to ensure the precision of piston , straightness accuracy. To improve performance and stability

Control Valve: 

1.Special design

2.The tolerance between valve and valve sleeve is 0.02-0.03mm(20T)

Rod Pin & Side Pin:

1.42CrMo

2.Vacuum heat treatment in order to expanded service life, avoid broken

Through bolt:

1. Special material to improve service life

Seal Kits:

1.Original Seal Kits Nok 

2.Excellent wearability and improve the breaker's life

Front cover&Ring bush:

1.42 CrMo to ensure perpendicularity

2.Vacuum heat treatment in order to expand service life, avoid broken

Chisel:

1.42CrMo,Durable and not easy to get rusty

2.The top hardness 53-55HRC

the back hardness 45HRC

Piston:

               Warranty:1 year

1. Special material:durable and longer service life.(20CrNiMoA)

2. For larger model, we use special technology, avoid crack. It will be as good as new after six months if you opearte correctly.

3.Vacuum heat treatment, we control the temperature and time of annealing furance by computer and workers. To ensure  durable performance and  perfect quality.

4.After heat treatment, we use subzero treatment in order to reduce the deformation and not easy  scratched ( below zero 130℃）.

5.The piston's precision is 0.005mm and concentricity is 0.005-0.006mm. It ensures beating force.

6.The distance between cylinder and piston: 

20T 0.05-0.06mm     30-40T 0.06-0.065       40T 0.065-0.07mm

1.How to choose right model

· Excavator weight

· Working pressure and oil flow

2.How to choose right chisel