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Tungsten Carbide Cross Drill Bit for Marble Stone Limestone

Tungsten Carbide Cross Drill Bit for Marble Stone Limestone

Rock drill Cross bit is made from grade hard alloy and special steel, generally matched with the lightduty rock drill, to drill the rock hole within diameter of 45mm. is widely used in metallurgy mine geological exploration, water conservancy construction, electricity, traffic,tunnel, quarry,national defence stone project etc.

Model: Cross Drill Bit
Brand: Kingkong Drills
Product Name:: tapered Cross Bit
Other Names:: Cross Rock Drill Bit
Special design :: Cross, X
Taper at bit end : : 7degree,11degree,12degree
Applications: Drill rock, Marble Stone, limestone
Drill Rods Dimension: 22x82mm, 22x108mm, 25x108mm, 25x159mm
Steels Grade:: Tungsten carbide and high strength alloy steel

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Product Description

Compared with taper chisel bits, taper cross bits have a better drilling performance because carbide tips on cross bits doubled, which means carbides shape are cross type on drill bits. Taper cross bit is mainly used for hard or very hard rock formation.

Tapered cross bits are suitable for mining of black metal mines(such as iron mine, manganese etc), nonferrous metal mine(such as gold, silver, copper etc), marble and granite etc.

1) Tapered connection: 7,11,12

2) Chisel bit diameter: 28-60mm

3) Technology:hot-pressing or welding

4) Bit Body: Short skirt and Long skirt

5) Tapered drill rod: H22/H25*108mm

It is widely used in drilling holes with a depth size less than 5 meters and diameter scope in 20-45 mm by light-duty hand hold drills, like Y6, Y10, Y24, major use in natural dimensional stone quarry for small hole drilling, block's trimming and 2nd splitting for small blocks. To match Hexagonal 22 mm and Hexagonal 12 mm’s tapered drill steel with 4/6/7/11/12 degree.

Parameters of cross bit

Drill diameter		Taper(°)	Drill diameter		Taper(°)
(mm)	(in)	Taper(°)	(mm)	(in)	Taper(°)
28	1 3/32	6,7	45	1 3/4	6,7,11,12
30	1 3/16	6,7	50	1 31/32	6,7,11,12
32	1 1/4	6,7,11,12	60	2 3/8	6,7,11,12
34	1 11/32	6,7,11,12	76	3	6,7,11,12
35	1 3/8	6,7,11,12	89	3 1/2	6,7,11,12
36	1 13/32	6,7,11,12	102	4	6,7,11,12
38	1 1/2	6,7,11,12	115	4 1/2	6,7,11,12
40	1 9/16	6,7,11,12	127	5	6,7,11,12
41	1 5/8	6,7,11,12	140	5 1/2	6,7,11,12
42	1 21/32	6,7,11,12	152	6	6,7,11,12
43	1 11/16
Ps: We can also design all kinds of Alloy Bore Bit according to your requirements.