Tapered bit

Tapered Cross Drill Bits for Hard Rock – Superdrill

Model NO.: 32mm 34mm 36mm 38mm 40mm 45mm
Design - Bit: Button / Chisel / Cross
Diameter: 32~ 45mm
Taper Degree: 4, 6, 7, 11, 12
Product description: Superdrill offers high-performance tapered cross bits made from premium alloy steel and tungsten carbide. Available in 28mm to 45mm for hard rock drilling applications. Exported globally to over 30 co
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Superdrill offers high-performance Tapered cross bits made from premium alloy steel and tungsten carbide. Available in 28mm to 50 mm for hard rock drilling applications. Exported globally to over 30 countries.

1. Tapered cross bit

Tapered cross bit 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.

All Tapered bit are made with high quality of raw material through special heat treatment ,

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

2. 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.

Description	Diameter	Length	Water hole
Taper degree a=4° 6° 7° 11° 12° Socket inside diameter d=15, 19, 22, 25	mm	mm	2
	20	65	2
	23	65	2
	25	69	2
	28	60	2
	30	55 88	2
	32	55 64 71 80	2
	34	71 80	2
	36	74	2
	38	74	2
	40	74	2
	42	74	2
	45	74	2

3. Tapered button bits

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= 4° 6° 7° 11° 12° 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

cross bit.png

Tapered Cross Drill Bits for Hard Rock – Superdrill .png

Diameter	28-50mm
Material	Tungsten alloy +42CRMO
Grade	Ф20 Ф28 Ф32 Ф36 Ф38 Ф40 Ф42 Ф45 Φ50
Types	Tapered cross bits, Tapered button bits
Feature	Tapered drill bits connect tapered drill steel of rock drill for drilling holes