coal mining roof bits/coal bit

Specifications

Coal mining roof bit -
1.Reliable quality
2.Reasonable price
3.Long life and full model
4.Be certified by ISO9001

coal mining roof bits/coal bit

Applications: apply to the anchor-network support hole drilling in coal mine, hydraulic project. Etc.

Characteristics:

1. High wear resistance and impact-resistance toughness.
2. To repeat repair & greaning are not necessary, long drill life.
3. High efficiency could be promoted sharply in penetration of high-medium hard rock formation.
4. Labour intensity could be reduced.
5. Rock formation to be suitable t:f=4-12

 

3 wings/ 2 wings

 

Product description:

The coal bits are mainly used in coal and mine drilling.

We can do different measures according to customer’s requirements.

Colliery Drilling Tools	Main Standard(mm)
	D	H	L	M
Thread joint	27	44	17	M14×1.5
	27	54	17	M12×1.75
	28	54	20	M12×1.75
	29	52	18	M14×1.5
	30	50	18	M14×1.5
	32	52	22	M14×1.5
	32	56	22	M12×1.75