Specifications

1. SJ type double way bumper
2.A kind of double-way shock absorbing tool

Function:

   1.The SJ type double way bumper is a kind of double-way shock absorbing tool which is used to simultaneously slow down or eliminate the vertically or horizontally shock from drill string.

   

   2.It can reduce the damage due to shocking to drill bit, drilling tool and surface drilling tool so that the purpose of raising drilling speed and of reducing drilling cost shall be reached.

 

 

Detail Specification:

Technical specification and parameters for SJ type Double-way Shock Absorber
Type	O.D. (mm)	I.D. (mm)	Max. stroke (mm)	Ambient temperature (°C)	Max. torque (KN.m)	Max.bit weight (KN)	Tensile load (KN)	Pull-down overall length (mm)	Conn.
SJ121B	121	38	120	-40~150	10	200	1000	4490	3 1/2"REG
SJ160B	160	45	120	-40~150	15	340	1500	5150	NC46
SJ178B	178	57	120	-40~150	15	400	1500	5590	NC50
SJ203B	203	64	120	-40~150	20	480	1960	5800	6 5/8"REG
SJ229B	229	71	120	-40~150	20	540	1960	5630	7 5/8"REG