steel core drill bit/hollow drill bit/oil rig drill bit

• Button bit is well known for its high wear resistance on medium-hard to hard abrasive rock formations (between 200 Mpa to 260 Mpa compressive strength). Featuring spherical tungsten carbide inserts that is known to have strong configuration against carbide fracture.
•  Widely used drifting and tunneling
• Bit face design is ideal for medium-hard to hard abrasive rock

Specification of steel core drill bit/hollow drill bit/oil rig drill bit

1.With carbide buttons hot pressed on bits bodies, Tapered Button Bits have a very good drilling performance and long life time. Different diameters and taper degrees are available to suit different applications in mining, quarrying etc. We can supply long skirt and short skirt Tapered Button Bits.

2.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.

3.Tapered equipment affords drillers the ability to change drilling bits whilst still using the same

   drilling rod. Drillers choose tapered button bits for faster drilling penetration rate. Different taper

   sizes have different characteristics when it comes to the “knock-off” index – the smaller angle will

   prevent the bit from spinning.

4 • Suitable for small hole range

   • Widely used in Dimensional Stone Quarrying Industry
   • Widely used in Underground Mining Industry 

Techonical parameters of steel core drill bit/hollow drill bit/oil rig drill bit

Button Bit	Carbide Shape	Dimension		Buttons*Button Dia				Gauge	Flushing Hole		Approx's Weight
		Dia		Gauge		Front		Buttons
		mm	inch	EA	mm	EA	mm	Angle	Front	Side	kg	Ib
	Taper Bit	32	1 1/4'	5	7	2	7	32	1	1	0.3	0.75
		35	1 3/8'	5	7	2	7	32	1	1	0.3	0.75
		38	1 1/2'	5	8	2	7	35	1	1	0.4	0.85
		41	1 5/8'	5	8	2	7	35	1	1	0.4	0.85
		45	1 3/4'	5	9	2	7	35	1	1	0.5	0.95
Flat Face	R32	38	1 1/2'	5	8	2	8	30	3	1	0.5	0.95
		41	1 5/8'	6	8	3	8	30	3	1	0.6	1.05
		45	1 3/4	6	10	3	8	30	3	1	0.7	1.15
		48	1 7/8'	6	10	3	9	30	3	1	0.95	1.4
		51	2'	6	10	3	9	30	3	1	1	1.45
Flat Face	T38	64	2 1/2"	8	11	4	10	35	2		1.5	1.95
		70	2 3/4"	8	10	6	10	35	2		1.7	2.15
		76	3"	8	11	4	11	35	2		1.9	2.35
	T45	76	3"	8	11	4	11	35	2		2.3	2.75
		83	3 1/2"	9	13	6	13	35	2		3.7	4.15
Flat Face	T38	89	3 1/2"	9	11	6	10	35	3		3.7	4.15
		102	4"	9	12	6	12	35	3		4.6	5.05
	T45	76	3"	7	12	4	11	35	3		3.7	0.75
		89	3 1/2"	9	11	6	10	35	3		4.8	5.25
		102	4"	9	12	6	12	35	3		3.4	3.85
	T51	89	3 1/2"	9	11	6	10	35	3		4.4	4.85
		102	4"	8	12	7	12	35	3		4.8	5.25
Flat Face	T38	102	4"	8	12	5	12	35	4		4.8	5.25
		102	4"	8	12	5	12	35	4		4.8	5.25
	T45	102	4"	8	14	5	12	35	4		5.4	5.85
		115	4 1/2"	8	14	7	13	35	4		4.5	4.95
	T51	102	4"	8	14	5	12	35	4		5.3	5.75
		115	4 1/2"	8	14	7	13	35	4		6.1	6.55
		127	5"	8	14	7	14	35	4		1.42	1.87
Drop Center	T0.7538	64	2 1/2"	6	11	4	10	35	3		2.6	3.05
		76	3"	6	11	4	11	35	3		2.4	2.85
	T45	76	3"	7	12	3	11	35	3		2.4	2.85
		76	3"	6	11	3	11	35	3		3.6	4.05
Drop Center	T38	89	3 1/2"	8	12	5	11	35	4		5.5	5.95
		102	4"	8	14	5	11	35	4		2.4	2.85
	T45	76	3"	6	12	3	12	35	3		3.4	3.85
		89	3 1/2"	8	12	4	11	35	4		4.8	5.25
		102	4"	8	14	4	12	35	4		4.8	5.25
		115	4 1/2"	8	14	4	13	35	4		6.2	6.65
		127	5"	8	14	4	14	35	4		6.8	7.25
	T51	89	3 1/2"	8	12	4	11	35	4		3.3	3.75
		102	4"	8	14	4	12	35	4		4.7	5.15
		115	4 1/2"	8	14	4	13	35	4		5.7	6.15
		127	5"	8	14	4	14	35	4		6.7	7.15
Heavy Duty	T38	64		6	12	3	11	35		3	1.7	2.15
		76		8	12	4	12	35	2		2.7	3.15
		89	3 1/2"	8	13	5	13	35	2		3.9	4.35
	T45	76	3"	6	12	6	14	35	2		2.3	2.75
		89	3 1/2"	8	13	5	13	35	2		3.4	3.85
		102	4"	8	14	6	11	35	2		4.5	4.95
	T51	89	3 1/2"	8	13	6	11	35	2		3.2	3.65
		102	4"	8	14	6	11	35	2		4.7	5.15
		115	4 1/2"	8	14	6	11	35	2		6	6.45
		127	5"	8	14	7	14	35	2		6.3	6.75
Retract  Flat  Face	T38	64	2 1/2"	6	11	4	10	35	2		1.9	2.35
		76	3"	8	11	4	11	35	2		3	3.45
	T45	76	3"	8	11	4	11	35	2		2.8	3.25
Retract  Flat  Face	T38	89	3 1/2"	8	11	6	11	35	4		5.5	5.95
		102	4"	8	12	6	11	35	4		7.2	7.65
	T45	89	3 1/2"	8	11	6	11	35	4	1	5.4	5.85
		102	4"	8	12	6	11	35	4	1	7	7.45
		115	4 1/2"	8	14	7	13	35	4	1	8.7	7.15
	T51	89	3 1/2"	8	11	6	11	35	4	1	5.2	5.65
		102	4"	8	12	6	11	35	4	1	6.9	7.35
		115	4 1/2"	8	14	7	12	35	3		8.3	8.75
		127	5"	8	14	7	14	35	3		10.1	10.55
Retract  Drop  Center	T38	64	2 1/2"	6	11	3	10	35	4		1.9	2.35
		76	3"	6	11	3	11	35	4		3	3.45
Retract  Drop  Center	T38	64	2 1/2"	8	11	4	10	35	4		1.9	2.35
		76	3"	8	11	4	11	35	4		3	3.45
		89	3 1/2"	8	11	4	11	35	4	1	5.3	5.75
		95	3 3/4"	8	11	4	11	35	4	1	6	6.45
		102	4"	8	12	4	11	35	4	1	7.1	7.55
		117	4"	8	14	4	13	35	4		8.7	9.15
		127	5"	8	14	4	14	35	4		10.5	10.95
	T45	76	3"	8	11	4	11	35	4		2.9	3.35
		89	3 1/2"	8	11	4	11	35	4	1	5.3	5.75
		95	3 3/4"	8	11	4	11	35	4	1	6	6.45
		102	4"	8	12	4	11	35	4	1	7	7.45
		110	4 5/16"	8	12	4	12	35	4	1	8	8.45
		115	4 1/2"	8	14	4	13	35	4		8.7	9.15
	T51	89	3"	8	11	4	11	35	4	1	5.2	5.65
		102	3 1/2"	8	12	4	11	35	4	1	6.9	7.35
		115	4 1/2"	8	14	4	13	35	4		8.2	8.65
		127	5"	8	14	4	14	35	4		10	10.45