Bestlink Tapered Rock Drill Chisel Bits for Quarrying

• Standard: CE
• Type: Center Drill Bit
• Material: Carbide Alloy and Steel
• Usage: Small Hole Drilling
• Hole Diameter: <50mm
• Structure: Mill Drilling Machine
• Model NO.: Diameter 32-40mm
• Condition: New
• Number of Shaft: No
• Controlling Mode: No
• Precision: No
• Automatic Grade: No
• Layout: No
• Diameter: 32-38mm
• Transport Package: Crate
• Specification: CE
• Trademark: BESLINK
• Origin: Xiamen, Fujian
• HS Code: 84791090
• Production Capacity: 300 Sets /Month

Product Description

Bestlink Tapered Rock Drill Chisel Bits for Quarrying

Taper rock drill bits we have 3 types: Chisel bits, button bits, cross bits Rock Drill Tapered Chisel Bits is suitable for H22mm and H25mm taper rock drill rods use. It have three taper degree: 7° , 11° , 12° . It's widely used for hard rock(f=8~18) drilling use. 1) Tapered connection: 7, 11, 122) Alloy steel: 42CrMo3) Carbide tips: YK204) Carbide size: 18*10mm, 15*10mm, 13*9.5mm4) Chisel bit diameter: 30-80mm5)Technology: Hot-pressing or welding

1. Tapered chisel bits
The tapered chisel bit is widely used in drilling holes with depth less than 
 5 meters and diameter ranged in 20-45 mm by light-duty rock drill, like Y6.

Type	Diameter		Tip Size	Taper	Weight
	Dia
	mm	inch	H*W		kg
Chisel Bit	26	1  1/32	13*8	7	0.24
	28	1  7/64	13*8	7	0.28
	30	1  3/16	13.5*8	7	0.28
	32	1 1/4	13.5*8	7	0.3
	34	1 11/32	13.5*8	7	0.34
	36	1 27/64	13.5*8	7	0.36
	38	1 1/2	13.5*8	7	0.38
	40	1 37/64	13.5*9,2	7	0.4
	42	1 2/3	13.5*9.2	7	0.42
	20	25/32	12*6	4	0.12
	22	55/64	12*6	4	0.16
	24	15/16	13*8	4	0.18
	26	1  1/32	13*8	4	0.22
	28	1  7/64	13*8	6	0.26
	30	1  3/16	13.5*8	7	0.28
	32	1 1/4	13.5*8	7	0.32
	33	1 19/64	13.5*8	7	0.33
	34	1 11/32	13.5*8	7	0.35
	36	1 27/64	13.5*8	7	0.35
	38	1 1/2	13.5*8	7	0.39
	40	1 37/64	13.5*9.2	7	0.4
	41	1 5/8	13.5*9.2	7	0.41
	42	1 21/32	13.5*9.2	7	0.42

2. Tapered cross bits 
The taper cross bits can be used under any rock drilling condition because of it's comprehensive adaptability. 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.                                                                                         

Description	Diameter	Length	Weight
Taper degree a=  6° 7° 11° 12° Socket inside diameter d=19, 22, 25	mm	mm	kg
	28	71 80	0.19
	29	71 80	0.2
	30	50 67 71 80	0.3
	32	50 67 71 80	0.3
	33	71 80	0.32
	34	67 71 80	0.34
	35	67 71 80	0.35
	36	71 80	0.36
	38	67 71 80	0.42
	40	71 80	0.43
	41	71	0.45
	42	69 80	0.46
	44	80	0.47
	45	80	0.5

 
3. Tapered button bits 
Comparing with tapered chisel bits and tapered cross bits, button bits has higher technology, much longer primary drilling time and higher drilling efficiency, so that the button bit is popular among the users.
According to the tungsten carbide insert, tapered button bits can be divided into the types of hemispherical button, conical button and parabolic button, etc.
Button bits with hemispherical button is for high bearing capacity and abrasive resistance while conical button and parabolic button are for high drilling speed and low abrasive resistance.                                     

Description	Diameter	Length	No. of buttons
Taper degree a= 4o46" 6o 7o 11o 12o Socket inside diameter d=19, 22, 25	mm	mm	pcs
	28	50	4
	29	50	4 5 6 7
	30	50 80	5 6 7 8
	32	50 55 71 80	6 7 8 9
	33	50 55 71 80	6 7 9
	34	50 55	7 8
	35	55 71 80	4 5 6 7
	36	50 55	7
	37	55	4 6 7
	38	50 55	4 6 7
	40	7
	41	50 55 71	4 5
	42	50	6 7
	45	50 55 71	6 7 8 9