800mm-1200mm Length Tapered Drill Rod for Stone Quarrying

• Customization: Available
• Length: 360mm
• Usage: Quarry Small Hole Drilling
• Model NO.: R25, R22, taper degree 7, 11, 12.
• Taper Degree: 4, 7, 11, 12
• Hexagonal Bushing: 22*108mm
• Materials: 95crmo
• Match Rock Drill: Pneumatic Rock Drills
• Thread: R25, R22, R28, R32
• Transport Package: Wood Case or Bundle
• Specification: SGS, CE
• Trademark: Prodrill
• Origin: China
• HS Code: 82071990
• Production Capacity: 10000 Meter / Month

Product Description

Tapered Drill Steels with taper or thread  description :

Drill rods with thread end have several advantages on the tapered connection threads. Namely, it is possible to extend these rods with extension rods.This way you can drill to great depths.
In general drill bits with thread connections are also easier to release from the drill rods than drill bits with tapered connection threads.

lso the risk that the drill bit is released from the drill rod on retracting the rock drill is even smaller with a threaded connection than with the tapered connection


Steel grade: 95CrMo Equivalent to SANDBAR 20 or C253, 55SiMnMo
Size: hex.19mm, hex.22mm, hex 25mm
Diameter: 0.4m-10m.
Taper degree: 4, 7°11°and 12°etc.
Thread type : R25, R22, R32.

The tapered angle of 4. 6, 7, 11, 12 degrees, also known as taper degree, is ideal for drilling with pneumatic rock drills for small hole such as dimensional stone quarry,  and another rod is shank rod
The connection thread offers the best grip and the least chance of slipping or releasing of the drill bit.
Various other tapered connection threads can be supplied on request



Tapered Rod spec :

Shank size	Length in mm	Length in feet	Part number
22X108	610	2	0714 0610-xx*
22X108	1220	4	0714 1220-xx*
22X108	1830	6	0714 1830-xx*
22X108	1980	6-1/2	0714 1980-xx*
22X108	2440	8	0714 2440-xx*
22X108	3050	10	0714 3050-xx*
22X108	3660	12	0714 3660-xx*
22X108	5485	18	0714 5485-xx*
22X108	6400	21	0714 6400-xx*
22X108	7315	24	0714 7315-xx