Coal Mining Drill Bit

 

1. YG8 coal mining drill bit 43mm

Hard alloy drill bits are main tools widely used in percussion drilling. We produce Chisel bit, cross bit, three-wing bit, button bit and so on. 
Material: high-class alloy bit
Craft: forging
Application: the drilling of limestone, moorstone, marble; the drilling operation of iron mine, goldmine and so on.

2. YG8 coal mining drill bit 43mm

 3. YG8 coal mining drill bit 43mm

Φ27   Φ28  Φ32  Φ36   Φ42   Φ45  Φ55   Φ65    Φ76   Φ89  Φ95   Φ110   Φ125   Φ135

4. YG8 coal mining drill bit 43mm

 

NO.	specification (mm)			drill type
	Dia.(mm)	contact size(mm)
1	27	M12/8	M14×1.5	2
2	28	M12/8	F12×12	2
3	30	M12/8	F12×12	2
4	32	M14×1.5/8	F12×12	2
5	34	M14×1.5/8	F12×12	2
6	36	M14×1.5/8	F12×12	2
7	38	T24×5/12	F14×14	2--3
8	42	T24×5/12	F13-14	2--3
9	45	T24×5/12	F13-18	2--3
10	55	T24×5/12	F13-18	4
11	65	T24×5	F13-18	4--5
12	75	T33×4.23	F13-18	4--5
13	76	T33×4.23	F18-24	4--5
14	82	T42×5.08	F18-24	4--5
15	85	T42×5.08	F18-24	4--5
16	89	T42×5.08	F24-32	5--7
17	95	T55×5.08	F24-32	5--7
18	110	T55×5.08	B35-45	5--7
19	125	T55×5.08	B35-45	5--12
20	135	T55×5.08	B35-45	5--12

 

  

 

 

 

 

 

Our drill bit series

 

 

 

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