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  • Name: Coupling sleeve
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Coupling sleeve

Because of different applications, we need different lengths of drill stems, so couplings sleeves are used for connecting extension rods. There are semi-bridge couplings and full bridge couplings, the only difference between them is that semi-bridge couplings have a middle stop at the middle of couplings. Usually couplings two ends are the same couplings, like R25, R32,R38,T45, T51, etc .While sometime people need crossover couplings to work, for example, one end is R32 and another end is R38, but basically all couplings are female threads at the two ends.

 

Technical Data

Connection
D1

Length 

diameter 

Connection 
D2

 

mm

mm

 

R22

100

32

R22

R32

160

48

R32

R32

170

55

R32

R25

160

37

R25

R38

170

55

R38

T38

190

55

T38

T45

210

64

T45

T51

225

75

T51

T38

185

55

T38