Hydraulic Shock Sub / Absorber Type YJ

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The Hydraulic Shock Sub type YJ is fully hydraulic and is used for reducing vibrations caused by hard formation drilling and keeping the drill bit firmly on the bottom, so that it helps to reduce drill string connection fatigue and prolong drill string life. Type O.D. mm (in.) Water Hole mm (in.) Max. Working Stroke mm (in.) Connection API Working Temperature 0C Max. Drilling Pressure kN (Lbf) Max. Tensile Load kN (Lbf) Max. Working Torque kN· m (Lbf· m) YJ121 121 (4 3/4) 38 (1 1/2) 100 (3 15/16) 3 1/2REG -40～+150 260 (58500) 980 (220500) 10 (2250) YJ178Ⅲ 178 (7) 57 (2 1/4) 125 (4 15/16) NC50 -40～+150 390 (87750) 1470 (330750) 14.7 (3307.5) YJ203Ⅲ 203 (8) 68 (211/16) 140 (5 1/2) 6 5/8REG -40～+150 490 (110250) 1960 (441000) 19.6 (4410) YJ229Ⅲ 229 (9) 70 (2 3/4) 140 (5 1/2) 7 5/8REG -40～+150 540 (121500) 1960 (441000) 19.6 (4410)

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Guizhou Viton Industrial Co.,Ltd

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