Tapered drill rod

详情

Tapered drill rod  provides a hexagonal chuck section to provide leverage for the rotation chuck bushing. It usually has a forged collar to maintain the proper shank striking face position in the rock drill, and a tapered bit end. Tapered steel lengths—available from 0.6 m to 3.6 m in length—are measured from the collar to the bit end.

Shank Hexagon: *9 x **8 mm, *2x **8mm, *5 x**8 mm,  *5 mm X**9 mm  6, 7, *1, *2 degree taper in most lengths, taper degree of drill steel is mostly imports for excellent drilling productivity

For drilling medium-hard to hard and abrasive rock formations, Taper angles of *1 and **-degrees are normally used on modern drill rigs, like our model no. PD**8 crawler hydraulic rock drill. Also for Y6, Y*0, Y*4, YT*4, Mobile rock drill pneumatic and hydraulic

For low impact rock drills and softer rock formations, a narrow taper angle of 7 degrees is used, such as Indian, Saudi’s granite and marble quarry.

A comprehensive range of taper bits, cross bits and chisel bits with 6, 7, *1, *2 degree taper, drill hole diameter: *8mm**7mm.