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

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

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