Drill Bit Rock ST58 suppliers
Drill Bit Rock ST58 factory

Drill Bit Rock ST58

Thread: ST58(Trapezoidal thread)
Bit type: Top hammer button bit
Bit diameter: 89mm - 127mm
Face design: Flat face or Drop center
Button: Ballistic or spherical tungsten carbide
Application: production drilling, tunneling, underground drilling

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General Introduction

The ST58 Rock Drill Bit is a heavy-duty threaded button bit designed for top hammer drilling applications in hard and abrasive rock formations. It features an ST58 thread-a robust, trapezoidal thread profile that offers strong connection strength and excellent energy transmission between the bit and the drill rod.

Guidance to Product Code

Example: BSFS(B)89ST58-852

BS: Standard skirt Button bit
F: Flat face; D: Drop center face;
S: Spherical tungsten carbide teeth; B: Ballistic tungsten carbide teeth
89: Bit diameter
ST58: Thread
8: Gauge button numbers
5: Front button numbers
2: Face flushing numbers

Specification

Pic	Article No.	Dia		Button		Flushing Hole		Angle (°)	Weight(kg)
Pic	Article No.	mm	inch	Front	Guage	Front	Gauge	Angle (°)	Weight(kg)
	BSFS(B)89ST58-852	89	3 1/2	5 x 12	8 x 13	2	1	35	3.9
	BSFS(B)102ST58-852	102	4	6 x 12	8 x 14	2	1	35	5.8
	BSFS(B)89ST58-963	89	3 1/2	6 x 12	9 x 12	3	/	35	3.7
	BSFS(B)102ST58-973	102	4	7 x 13	9 x 13	3	/	35	5.8
	BSFS(B)115ST58-973	115	4 1/2	7 x 14	9 x 14	3	/	35	6.8
	BSFS(B)127ST58-983	127	5	8 x 14	9 x 16	3	/	35	8.9
	BSDS(B)89ST58-854	89	3 1/2	5 x 12	8 x 13	4	0	35	3.6
	BSDS(B)102ST58-864	102	4	6 x 12	8 x 14	4	0	35	5.5
	BSDS(B)115ST58-864	115	4 1/2	7 x 13	8 x 14	4	0	35	6.5
	BSDS(B)127ST58-864	127	5	7 x 14	8 x 16	4	0	35	7.3

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