Specifications

MECHANICAL-HYDRAULIC SHOCK ABSORBER :
Mechanical and hydraulic shock absorber is a new type two-function shock absorb

MECHANICAL–HYDRAULIC SHOCK ABSORBER  

 

Mechanical and hydraulic shock absorber type DHJ is a new type two-function shock absorber. It absorb the pulsate and shock from drill tools by compressing spring and si oil to store the energy. This shock absorber have advantages of well maintainable, bears high load and long usage life.

Model	DHJ121	DHJ159	DHJ178	DHJ203
O.D. mm	121	159	178	203
I.D. mm	38	50.8	57	71.4
Max. stroke  mm	100	120	120	140
ing drill pressure mm	40	60	60	70
Connection   API	3 1/2REG	NC46	NC50	6 5/8REG
Over length of pulling off   mm	3400	4210	4210	4700