China R25 R28 T38 T45 T51 Drill Steel Rod Adapter Quick Coupling Sleeve for Mining Quarrying

Coupling Sleeve
Coupling sleeves, other name is coupling, when using rock drills with male shank adapters and a conventional drifter rod, a coupling is required to join the adapter to the rod, ensuring the ends touch for efficient energy transmission.Coupling sleeves are also used to connect several rods to each other in the same way. Coupling sleeves have a middle stop to prevent over-threading on to the drill rod.
Thread: R22, R25, R28, R32, R38, T38, T45, T51
Function: Coupling sleeve, Adapter Coupling
Type: Full-bridge, Semi-bridge
Suitable for top hammers and drifter from Atlas Copco, Sandvik, Tamrock, Furukawa,Ingersoll Rand, Toyo, etc.
Used in extension rod connection, its function is to transmit impact energy from the rock-drill piston, as well as rotation torque, into the drill string with no losses. It must withstand and transmit up to 6300 blows per minute from the piston continually, with great endurance and dependability.
(1) Size: R22,R25,R28,R32,R38,T38,T45,T51,R25-R28,R22-R25,R25-R32,R32-T38
(2) Length: 140mm-235mm
(3) package: in wooden case or in bundles




D(mm)
Thread
Length
Part NO.
37
R25
127.0
37X127-R25
45
R32
160.0
45X160-R32
55
R32
180.0
55X180-R32
R38
180.0
55X180-R38
T38
180.0
55X180-T38
57
R38
180.0
57X180-R38

T38
180.0
57X180-T38
66
T45
207.0
66X207-T45
76
T51
225.0
76X225-T51
55
R32 R38
180.0
55X180-R32/R38
T38 R38
180.0
55X180-T38/R38
61
T45 T38
200.0
61X200-T45/T38
66
T38 T45
200.0
66X200-T38/T45
71
T45 T51
225.0
71X225-T45/T51