Search
×
Litian Heavy Industry Machinery Co., Ltd
Litian Heavy Industry Machinery Co., Ltd
Small Hole Drilling Tools

Small Hole Drilling Tools

Small Hole Rock Drilling Tools Specification


Tapered Drill Bit

Taper

7°, 11°, 12°

Bit Type

Tapered button bit, Chisel bit, Cross type bit 

Head Diameter

28mm~48mm

Tapered Drill Rod

Taper

7°, 11°, 12°

Rod Diameter

Hex22, Hex25

Length

400mm-5500mm

Integral Drill Rod

Rod Diameter

Hex19, Hex22

Bit Diameter

24mm~40mm

Shank Length

108mm

Effective Length

400mm~6400mm


Contact Drill Rod Factory
Litian Updates
Jun 12-2026
T45 vs. T51 Button Bits: Which Thread Size Is Better for Hard Rock Drilling?
Choosing the right threaded button bit for hard rock drilling is one of the most important decisions you'll make on any drilling project. Get it right, and you'll enjoy faster penetration, longer bit life, and lower cost per meter.
Jun 05-2026
Why Are My Button Bits Losing Buttons?
If you’ve been in rock drilling for any length of time, you know the frustration all too well. You’re making good progress, penetration rates are steady, and then suddenly—a button is gone.
FOLLOW US
R32 Button Bits: Sizes, Threads and Applications
Fill out now for more information