Coupling Sleeves

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Rock drilling tools

Coupling sleeves are mainly used to prolong drilling rods by putting them together. They are mostly used in quarries, mines and construction sites. We are able to produce coupling sleeves with different sizes and shapes so as to connect drilling rods with different sizes of threads. Apart from common coupling sleeves, customized sleeves can also be produced based on customers’ demands.

We are now able to produce coupling sleeves in different shapes and diameters, like R22, R25, R32, R35, R38, T38, T45, T51.

Coupling Sleeves	L		D		Thread
Rigid Coupling Sleeve	mm	inch	mm	inch	Thread
	170 180 190	6 11/16 7 1/16 7 1/2	55 55 55	2 5/32 2 5/32 2 5/32	R38 R38 R38
	160 170	6 5/16 6 3/4	45 55	1 3/4 2 5/32	R32 R38
	170 190	6 11/16 7 1/2	55 55	2 5/32 2 5/32	R38 T38
	235	9 1/4	72	2 27/32	T51
	207	8 1/16	66	2 3/8	T45

Coupling Sleeves	L		D		Thread
Flexible Coupling Sleeve	mm	inch	mm	inch	Thread
	190 190 207	7 1/2 7 1/2 8 1/16	55 55 66	2 5/32 2 5/32 2 3/8	R39/T38 R38/R32 R38/T45
	190 190 207	7 1/2 7 1/2 8 1/16	55 55 66	2 5/32 2 5/32 2 3/8	T38/R38 T38/R32 T38/T45
	200 207	8 1/16 8 1/16	66 66	2 3/8 2 3/8	T45/T38 T45/T51

Drill Bit Connector	L		D		Thread
Drill Bit Connector	mm	inch	mm	inch	Thread
	225 225	8 7/8 8 7/8	45 45	1 47/64 2 47/64	R32/T38 R32/R38
	225 225	8 7/8 8 7/8	49 49	1 16/15 1 15/16	T35/R32 R35/R32
	245 245	9 5/8 9 5/8	55 55	2 5/32 2 5/32	T38/R32 R38/R32