PDC coal mining drill bit: 28 mm, 29 mm, 30 mm, and 32 mm

We are a professional manufacturer specialized in series of coal mining drill bit,we can also produce other products according to the customers requirements. We sincerely welcome our friend both home and abroad to come for business talks. Coal bits are mainly used in coal and mine drilling.

Dimension: 25, 27, 28, 29, 30, 32, 36, 43 mm.

Normal Thread Model: M16*2; M14*1.5, M12*1.75; M14*1.5; M12*1.75

Diameter(mm)	PDC cutter	Wings	Water Holes	Drilling ways	Connection Thread
25.4mm,27mm	2PCS 1304	2	NO.	Dry drilling	Hex Drive
27mm,28mm,29mm,30mm,	2 PCS 1304	2	1	Wet driling	M14x1.5,M16x2,R17,R22
32mm,36mm
42mm,48mm	2 or 3  PCS 1304	2	1	Wet driling	M14x1.5,M16x2,R17,R22

 Using electric, pneumatic, and hydraulic drilling rigs, cutters are made to drill boreholes for the installation of mechanical and steel-polymer anchors in rocks with a strength factor of up to 12 units on the MM Protodyakonov scale. Following the following information will help you choose the right cutters based on the type of equipment, the geology and mining conditions, and other factors.