Small Hole Drilling Tapered Drill Steel Rod

Small Hole Drilling Tapered Drill Steel Rod 7 11 12 Degree For Jack Hammer

1) taper angle(degree): 4.46, 6, 7, 11, 12

2) shank size: Hex 22mm*108mm/25mm*159mm
3) length: 0.4m-10m

BESTLINK ROCK DRILL ROD( steel rod, drill steel)

Our factory can offer many kinds of drill bits, including chisel type bits, cross type bits, tapered drill rods and integral drill rods, mainly used for mining, coal cutting, tunneling, rock cutting in quarrying.

1. Tapered drill rod
Shank Hex: 19mm*83/108mm, 22m*83/108mm, 25mm*108/159mm
Taper degree: 4.46 6 7 11 12
Drilling rod length: 0.4m-6m


The tapered drill rod is used for rock drilling, blasting holes and other drilling works in the quarries, coal mines, traffic and other constructions.
Generally, the lightduty rock drill uses 7 taper or smaller taper angle, the heavyduty rock drill mainly uses 12 taper angle.


Tapered steel rod work with taper drill bits which are usually hexagonal. When it comes to the small-hole drillingtools equipped with pneumatic & hydraulic rock drills, Taper drill equipments is prevailingly used for rock drilling, blasting holes and other drillingworks especially in the mining application and dimensional stone industry.

Taper steel rod are the same as integral drill rods which havedifferent length to fit different drilling applications in mining, quarrying, road building etc. Taper drill rods need tapered drill bits to work, such as tapered chisel bits, tapered cross bits and tapered button bits.

There are different taper angle ( 6 degree, 7 degree, 11 degree, 12 degree, etc. )on customers' request. Taper drill rods and taper drill bits must be in the same tapered degree.

2. Integral drill rod
Shank: HEX*22*108
Bits diameter: 29-40mm

The products are widely used in coaling, construction, stoning and etc.