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 |