KAT DRILLING
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R28/SR28 thread drill bits are high-performance tools specifically engineered for demanding drilling environments. These tools are suitable for Construction drilling, Drifting, tunneling and bolting, as well as Underground production and long hole drilling.
Our comprehensive range includes 11 essential thread types: SR22, SR25, R25, SR28, R28, SR32, R32, SR35, SR38, R38, and T35.
Available Diameters range from 38mm to 127mm, perfectly compatible with button bits, cross bits, and reaming products.
These thread button bits are manufactured using premium quality alloy steel bars and tungsten carbides. Through advanced heat treatment processes, they are built to withstand the toughest rock drilling demands, effectively transmitting intensive impact energy into the rock with minimal energy loss.
Popular configurations widely favored by global clients include BIT R28 37mm, R28 38mm, R32 45mm, R32 48mm, and Drill BIT R32 51mm, including Button Bits and Retrac Bits known for their balance of quality and value.
| Button bit | Carbide dimension | Dimensions D | Flushing hole | |||||
|---|---|---|---|---|---|---|---|---|
| Gauge | Front | [mm] | [in] | Front | Side | |||
| [No.] | [mm] | [No.] | [mm] | |||||
|
5 | 8 | 2 | 7 | 36 | 1 13/32" | 1 | 3 |
| 5 | 8 | 2 | 8 | 38 | 1 1/2" | 1 | 3 | |
| 5 | 9 | 2 | 7 | 38 | 1 1/2" | 1 | 1 | |
| 5 | 9 | 2 | 9 | 41 | 1 5/8" | 1 | 1 | |
| 5 | 9.5 | 2 | 8 | 43 | 1 11/16" | 1 | 1 | |
| 5 | 10 | 2 | 9 | 45 | 1 3/4" | 1 | 1 | |
| 5 | 11 | 2 | 9 | 48 | 1 7/8" | 1 | 1 | |
|
6 | 8 | 2 | 8 | 43 | 1 11/16" | 2 | 0 |
| 6 | 9 | 2 | 9 | 45 | 1 3/4" | 2 | 0 | |
|
6 | 9 | 3 | 8 | 45 | 1 3/4" | 3 | 1 |
| 6 | 9 | 3 | 9 | 48 | 1 7/8" | 3 | 1 | |
| 6 | 10 | 3 | 9.5 | 51 | 2" | 3 | 1 | |
These drilling tools are ideal for construction drilling, tunneling, drifting, bolting, and underground long-hole production drilling.
We offer 11 major thread types including SR22, SR25, R25, SR28, R28, SR32, R32, SR35, SR38, R38, and T35 to suit various drilling equipment.
The bits are manufactured from high-quality alloy steel bars and premium tungsten carbides, combined with professional heat treatment for maximum strength.
By providing a higher penetration rate and improved reliability, these tools minimize energy loss and withstand extreme impact, resulting in a longer service life.
The bits are available in diameters ranging from 38mm up to 127mm, making them versatile for different project requirements.
Yes, these thread drill bits are designed to be fully compatible with button bits, cross bits, and various reaming products.
