SINODRILLS Taper Drill Rods

With one side connected to rock drill and the other side connected with taper drill bit, the taper drill rod transmits power from rock drill to bit, drilling work is thus performed. Tapered drill rod is a further development of the integral drill rods. It usually has a forged collar to maintain the proper shank striking face position in the rock drill. Tapered drill rod effective lengths are measured from the collar to the bit end, which are usually from 0.6meter to 3.6 meters.

Parameters

• Shank sizes: Hex.19mm, Hex. 22mm, Hex.25mm

• Taper degrees: 4°46’, 6°, 7°, 11°, 12°.

• Length: 400 - 8000mm.

Features

• Carburizing process is applied to promote surface hardness, thus grant better wearing quality and lifespan for the drill rods;

• 23CrNi3Mo, which is in same league as Sandvik Sandbar 64, is applied as drill rod material.

• Cost-effective, good performance with reasonable price.

• Complete types of drill rod for various drilling scenarios.

Applications

Drilling duties in tunneling, construction, mining, quarrying, etc.

The relationship between taper angle and taper end diameter
	Taper Degree	Short/Long	Taper End
	4°46’	Short Skirt	19.1mm
	7°	Short Skirt	16.0mm
	11°	Short Skirt	18.0mm
	12°	Short Skirt	16.8mm
	12°	Long Skirt	14.9mm

Please contact our sales team for more specifications.