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Mechanical-Hydraulic Shock Sub Type DHJ

Short Description:

Model “DHJ” Mechanical -Hydraulic Shock Sub, which can adopt the dished spring and silicone oil, is a two-action shock sub, being able to absorb the bounce and jounce of drill tool. It has advantages of good serviceability, high load bear and long service life. It has a characteristic of changing the rigidity as to protect the bit optimally, suiting the requirement of different layer. Specifications  Model O.D.  mm(in) I.D. mm (in) Connection    Max Working Load kN(lbf)   Max working t...


Product Detail

Product Tags

Model “DHJ” Mechanical -Hydraulic Shock Sub, which can adopt the dished spring and silicone oil, is a two-action shock sub, being able to absorb the bounce and jounce of drill tool. It has advantages of good serviceability, high load bear and long service life. It has a characteristic of changing the rigidity as to protect the bit optimally, suiting the requirement of different layer.

Specifications

 Model O.D.  mm(in) I.D. mm (in) Connection    Max Working Load kN(lbf)   Max working torgue kN · m (lbf·ft)   Max Compression kN(lbf)  Max. Stroke  mm(in)   MPa  kN/mm (1000×lbf/in)
DHJ121 121(4-3/4) 38.1(1-1/2) NC38 1100 (247280) 10(7373) 300 (67440) 100 (3-15/16) 30 2.4~7.5(13.6~42.6)
DHJ159 159 (6-1/4) 50.8(2) NC46 2010  (451848) 15 (11059) 450 (101160) 120 (4-3/4) 2.9~7.5(16.5~42.7)
DHJ165 165 (6-1/2) 50.8(2) NC50 2010 (451848) 15 (11059) 450 (101160) 120 (4-3/4) 2.9~7.5(16.5~42.7)
DHJ178 178(7) 57.2(2-1/4)) NC50 1672 (375865) 15 (11059) 450 (101160) 120(4-3/4) 2.9~7.5(16.5~42.7)
DHJ203 203 (8) 71.4(2-13/16)   6 5/8REG 2000 (448000) 20(14746) 550 (123640) 140(5-1/2) 3.2~8(18.2~45.5)
DHJ229 229 (9) 71.4 (2-13/16) 7 5/8REG 2500 (740000) 20  (14746) 650 (146000) 140(5-1/2) 3.5~10(19.9~56.9)
DHJ241 241 (9-1/2) 71.4 (2-13/16) 7 5/8REG 4100 (921680) 25 (18433) 650 (146000) 140(5-1/2) 3.5~10(19.9~56.9)
DHJ279 279 (11) 76.2 (3) 8 5/8REG 4500 (1010000) 30(22119) 650 (146000) 140 (5-1/2) 3.5~10(19.9~56.9)

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