1.high-quality 2.high- elastic 3.rigid 4.automatically adjustable 5.stable

1.PDC anchor shank coal drill bits 28mm introduction

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 bitCraft: forgingApplication: the drilling of limestone, moorstone, marble; the drilling operation of iron mine, goldmine and so on.

2. PDC anchor shank coal drill bits 28mm specification

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

3. PDC anchor shank coal drill bits 28mm

PDC anchor shank coal drill bits 28mm