Condition	New	Color	black or Customized
Applicable Industries	Construction works , Energy & Mining, Tunneling	Diameter	45MM-76MM
Video outgoing-inspection	Provided	Thread Type	R25,R28,R32,R38,T38,T45,T51
Machinery Test Report	Provided	Key words	Coupling Sleeve
Brand Name	Jcdrill	Application	Mining / Quarrying / Tunneling/Blasting
Type	Drill Sleeve	Length	150MM-235MM
Machine Type	Drilling Tool	Formation	Hard / Medium hard / Soft Rock Formation
Material	Carbide	Bridge type	Semi-bridge / Full-bridge
Processing Type	Forging	Raw Material	High quality alloy steel
Use	Mining

ST68
Drill Bit	Bit Dia.		NO x Button x Dia.			Flushing Hole		Weight
	mm	inch	Front	Gauge	Angle	Front	Side	（KG）
	spherical Buttons
	102	4	6x14	8x14	35°	2		8.7
	102	4	4x12,4x12	10x12	35°	4		8.7
	105	4 1/8	6x14	8x14	35°	2		8.9
	105	4 1/8	4x12,4x12	8x14	35°	4		8.9
	105	4 3/8	6x14	8x16	35°	2		9.4
	110	4 3/8	4x14,2x14	8x16	35°	4		8.9
	110	4 1/2	6x14	8x16	35°	2		9.6
	115	4 1/2	4x14,2x14	8x16	35°	4		9.5
	115	4 1/2	4x14,4x14	10x14	35°	4		9.5
	115	5	8x14	9x16	35°	3		11.0
	127	5	4x14,3x14	8x16	35°	4		10.8
	127	6	8x16	9x16	35°	3		16.2
	152	6	9x16	9x16	35°	3		16.2
	152	6	9x14,3x14	9x16	35°	3		16.2
	Parabolic Buttons
	102	4	6x14	8x14	35°	2		8.7
	102	4	4x12,4x12	10x12	35°	4		8.7
	105	4 1/8	6x14	8x14	35°	2		8.9
	105	4 1/8	4x12,4x12	8x14	35°	4		8.9
	105	4 3/8	6x14	8x16	35°	2		9.4
	110	4 3/8	4x14,2x14	8x16	35°	4		8.9
	110	4 1/2	6x14	8x16	35°	2		9.6
	115	4 1/2	4x14,2x14	8x16	35°	4		9.5
	115	4 1/2	4x14,4x14	10x14	35°	4		9.5
	115	5	8x14	9x16	35°	3		11.0
	127	5	4x14,3x14	8x16	35°	4		10.8
	127	6	8x16	9x16	35°	3		16.2
	152	6	9x16	9x16	35°	3		16.2
	152	6	9x14,3x14	9x16	35°	3		16.2
Drill Roll				Length		Dimaeter		Weight
				mm	inch	mm	inch	（KG）
				1525	5'	87	3 4/9	35.5
				1830	6'	87	3 4/9	43.8
				3660	12'	87	3 4/9	80
				6110	20'	87	3 4/9	133

Minimum Order Quantity	N/A
Price
Packaging Details	Standard Export Delivery Package
Delivery Time	7days
Payment Terms	T/T
Supply Ability	Based on Detailed Order

Introduction of coupling sleeves: Coupling sleeve for Extension Drill Rod connection.High quality of alloy steels and CNC machining guarantee our reliable and consistent quality control of coupling sleeves 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. Applications R25, R28, R32, R38 Used in drifting and tunneling. T38, T45, T51,T60,ST58,ST68 Used in benching and long hole drilling. Processing CNC milling and proprietary heat treatment process   Competitive Advantage High strength chromium-molybdenum steel with high fatigue strength and excellent wear resistance Keywords Thread coupling sleeve, R25 R28 R32 R38 T38 T45 T51 T60 ST58 ST68coupling sleeve Crossover coupling, full bridge coupling, semi- bridge coupling