Spade Type	Thread Shank Size	Drill Bit Diameter	Flushing Hole Diameter
Centre Flush	1/2" Whitworth	27mm	4mm
	1/2" Whitworth	29mm	4mm
	M16	M16	8mm
	M16	29mm	8mm
Extra Flush	M16	27mm	5mm
	M16	29mm	5mm
Side Flush	M14	26.5mm	-
	M14	27mm	-
	M14	28mm	-
	M14	29mm	-

General Features

A general purpose and robust rotary drill bit for wet drilling. Water flushing is through the centre hole in the drill bit body for centre flush bits, through the centre hole and two side flushing grooves for flush bits, and through two side flushing grooves for side flush bits.
Used for high thrust and impact applications.
The spade bit uses a time proven carbide insert, has a neutral front rake and provides good wear resistance for most types of conditions.
The drill bit body is specifically designed for clearance of rock cuttings. The body is made of high tensile abrasion resistant steel.
The spade bit is often used as a "starter" bit (hole collaring) when multiple drill rods are required. Refer to DSI’s "Practical Guide to Rock Bolting" highlighting installation problems associated with collaring the hole.
Standard diameters available are 27 and 29mm. Other diameters from 26mm through to 30mm are available by negotiation.

Packaging

Supplied in plastic pails containing 50 drill bits.

Notes

Only DSI rock bolt components should be used in order to obtain full performance of the bolt system.
DSI's Mining Products Division is Quality Assured to ISO 9001:2000, Registration No.QAC/R61/0315.

PRINTED December 2006: All dimensions, weights, quantities and specifications are those applicable at the time of publication and may be amended from time to time.