Drill blasthoes for tunneling construction. In coal mine, nonferrous metal mine etc. Two drilling booms, Self-return.

ZQST-40/3.0  Pneumatic Coal Borer 

ID	ITEM	UNIT	PARAMETER
1	Driller diameter	mm	Φ35-42
2	Air pressure	Mpa	0.50
3	Rotate speed without load	r/min	1700
4	Rotate speed with load	r/min	760
5	Air consumption with load	L/S	50
6	Hose size	mm	Φ19
7	Weight	kg	8
8	Our used pressure	Mpa	0.50

1) ZQST-40/3.0 Pneumatic explosion-proof drilling machine is used in coal mine and construction engineering's drilling work for coal seam,soft sandstone etc.

2)Wet drilling and dry drilling  are both applicable.

ZQST-40/3.0 Pneumatic Coal Borer