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Two-Way Shock Sub Type SJ

Short Description:

Two-Way Shock Sub Type SJ Model “SJ” Two-Way Shock Sub should be mounted on drill string which is near the bit. It can slow or sorbs the longitudinal bounce and peripheral torque impact of drill bit (drill string) simultaneously. It should realize the best fitting of drill pressure and rotation rate as to reduce the drill cost and improve the drilling efficiency. It can be used for the drill-in or coring of hard layer, gravel layer and soft-hard interlayer. Specifications  Model  O.D. mm...


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Two-Way Shock Sub Type SJ

Model “SJ” Two-Way Shock Sub should be mounted on drill string which is near the bit. It can slow or sorbs the longitudinal bounce and peripheral torque impact of drill bit (drill string) simultaneously. It should realize the best fitting of drill pressure and rotation rate as to reduce the drill cost and improve the drilling efficiency. It can be used for the drill-in or coring of hard layer, gravel layer and soft-hard interlayer.

Specifications

 Model  O.D.

mm(in)

 I.D.

mm(in)

 Connection   Max working Load kN(lbf) Max working Torgue kN·m(lbf·ft) Max.Drill preessure  kN(lbf)  Max. working stroke

mm(in)

 Rigidity

kN/cm

 Length mm(in)
SJ121 121(4-3/4) 38.1(1-1 /2) NC38 1000(224800) 10(7300) 300(67000) 100(3-15/16) 3.0~5.0 4208(165-5/8)
SJ159 159(6- 1/ 4) 48(1-7/8) NC46 1500(337200) 15(11000) 350(78600) 120(4-3 /4) 5494(216-1/4)
SJ165 165(6-1/2) 48(1-7/8) NC46 1500(337200) 15(11000) 350(78600) 120(4-3/4) 5494(216-1/4)
SJ178 178(7) 57.2(2-1/4) NC50 1500(337000) 15(11000) 350(78600) 120(4-3/4) 5735(225-3/4)
SJ203 203(8) 65(2-1/2) 6 5/8REG 2000(449000) 20(14000) 450(101000) 120(4-3/4) 6080(239-3/8)
SJ229 229(9) 71.4(2-3/4) 7 5/8REG 2000(449000) 20(14000) 540(121000) 140(5-1/2) 6080(239-3/8)
SJ254 254(10) 71.4(2-3/4) 8 5/8REG 2500(562000) 25(18000) 600(134000) 120(4-3/4)
6400(251-15/16)
SJ279 279(11) 76.2(3) 8 5/8REG 3000(674000) 30(22000) 600(134000) 160(6-1/4)
5580(219-11/16)

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