Coupling sleeves

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. Such as Coulping R25,CoulpingR25/R32,CoulpingR28/T38,Coulping R32,Coulping T38.

Size:	R25,R28, R32, R35,R38, T38, T45, T51,R25-R28, R22-R25, R25-R32 R32-R38, R32-T38.
Length:	140mm-235mm.

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Product Introduction

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.
Such as Coulping R25,CoulpingR25/R32,CoulpingR28/T38,Coulping R32,Coulping T38,

Sizes are as follows:

(1)   Size: R25,R28, R32, R35,R38, T38, T45, T51,R25-R28, R22-R25, R25-R32 R32-R38, R32-T38.
(2)   Length: 140mm-235mm
(3)   Package: in wooden case or in carton.
(4)   Productivity: 5000pcs/ month

COUPLINGS

THREAD	LENGTH(L)		DIAMETER(D)		Weight
	mm	In	mm	In	Kg
R22	140	5-1/2	30	1-3/16	0.45
R25	150	5-29/32	33	1-5/16	0.5
R25	150	5-29/32	35	1-3/8	0.52
R28	150	5-29/32	39	1-17/32	0.6
R32	150	5-29/32	42	1-21/32	0.9
R32	150	5-29/32	44	1-23/32	0.95
R38	170	6-11/16	55	2-5/32	1.75
T38	190	7-1/2	52	2-3/64	1.6
T38	190	7-1/2	55	2-5/32	1.95
T45	210	8-1/4	63	2-15/32	2.75
T45 HD	210	8-1/4	66	2-19/32	3.2
T51	225	8-7/8	72	2-13/16	3.85
T51 HD	225	8-7/8	76	3	4.68
COUPLINGS – Full Bridge

THREAD	LENGTH (L)		DIAMETER (D)		Weight
	mm	In	mm	In	Kg
R25	200	7-7/8	35	1-3/8	0.8
R28	160	6-5/16	39	1-17/32	0.7
R32	200	7-7/8	44	1-23/32	1.5
R32	300	11-13/16	44	1-23/32	2.6
R38	210	8-1/4	55	2-5/32	2.6
T38	205	8-1/16	55	2-5/32	2.31
T45	230	9-1/16	63	2-15/32	3.5
T51	250	9-13/16	72	2-13/16	5.3
T51	250	9-13/16	76	3	6.2

COUPLING ADAPTERS – Semi Bridge

THREAD	LENGTH(L)		DIAMETER(D)		Weight
(A)-(B)	mm	In	mm	In	Kg
R22 – R25	142	5-19/32	35	1-3/8	0.6
R25 – R28	150	5-29/32	38	1-1/2	0.6
R25 – R32	150	5-29/32	44	1-23/32	1.1
R28 – R32	150	5-29/32	44	1-23/32	1.05
R28 – R38	160	6-5/16	55	2-5/32	1.93
R28 – T38	165	6-1/2	55	2-5/32	2.2
R32 – R38	160	6-5/16	55	2-5/32	1.8
R32 – T38	165	6-1/2	55	2-5/32	2.1
R38 – T38	180	7-1/16	55	2-5/32	1.8
R38 – T45	195	7-11/16	63	2-15/32	2.8
T38 – T45	195	7-11/16	63	2-15/32	2.8
T45 – T51	218	8-19/32	72	2-13/16	4.35
COUPLING ADAPTERS – Full Bridge

THREAD	LENGTH (L)		DIAMETER (D)		Weight
(A) - (B)	mm	In.	mm	In.	Kg
R22 – R25	165	6-1/2	35	1-3/8	0.82
R25 – R28	170	6-11/16	39	1-17/32	1
R25 – R32	200	7-7/8	44	1-23/32	1.7
R25 – R38	170	6-11/16	55	2-5/32	2
R25 – T38	170	6-11/16	55	2-5/32	1.9
R28 – R32	170	6-11/16	44	1-23/32	1.3
R28 – T38	170	6-11/16	55	2-5/32	2.4
R32 – T35	170	6-11/16	49	1-29/32	2
R32 – R38	205	8-1/16	55	2-5/32	2.6
R32 – T38	205	8-1/16	55	2-5/32	2.6
R32 – T45	215	8-15/32	63	2-15/32	3.6
R38 – T38	205	8-1/16	55	2-5/32	2.4
R38 – T45	215	8-15/32	63	2-15/32	3.3
R38 – T51	225	8-7/8	72	2-13/16	4.5
T38 – T45	215	8-15/32	63	2-15/32	3.3
T38 – T51	225	8-7/8	72	2-13/16	4.5
T45 – T51	240	9-7/16	72	2-13/16	4.6

BIT ADAPTERS

THREAD	LENGTH(L)		DIAMETER(D)		Weight
(A)-(B)	mm	In.	mm	In.	Kg
R25 – R28	185	7-9/32	44	1-23/32	0.9
R25 – R32	185	7-9/32	44	1-23/32	1.2
R28 – R25	185	7-9/32	44	1-23/32	1.3
R28 – R32	185	7-9/32	44	1-23/32	1.15
R32 – R25	210	8-1/4	44	1-23/32	1
R32 – T32	270	10-5/8	44	1-23/32	2
R32 – R38	270	10-5/8	44	1-23/32	2.3
R32 – T38	270	10-5/8	44	1-23/32	2.5
R32 – T45	360	14-3/16	44	1-23/32	3.9
R35 – R32	280	11-1/32	55	2-5/32	2.6
R38 – R32	280	11-1/32	55	2-5/32	2.5
R38 – T32	280	11-1/32	55	2-5/32	2.5
R38 – T38	280	11-1/32	55	2-5/32	2.5
R38 – T45	280	11-1/32	55	2-5/32	3.3
T38 - R32	280	11-1/32	55	2-5/32	2.5
T38 - R38	280	11-1/32	55	2-5/32	2.5
T38 - T45	280	11-1/32	55	2-5/32	3.3
T45 - R38	280	11-1/32	63	2-15/32	2.9
T45 - T38	280	11-1/32	63	2-15/32	2.8
T45 - T51	285	11-7/32	63	2-15/32	4.1
T45 – ST58	280	11-1/32	72	2-13/16	6
T51 - R38	285	11-7/32	72	2-13/16	3.85
T51 - T45	285	11-7/32	72	2-13/16	3.85
T51 – ST58	285	11-7/32	76	3	5.7
T51 – GT60	345	13-1/2	82	3-1/4	8.5
ST58 – T51	310	12-3/16	81	3-3/16	5.4
GT60 – T51	360	14-3/16	82	3-1/4	6.5
GT60 – ST58	345	13-1/2	82	3-1/4	6.7

GUIDE COUPLINGS

THREAD	LENGTH(L)		DIAMETER(D)		Weight
	mm	In	mm	In	Kg
T38	190	7-1/2	61	2-13/32	2.2

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