Kenella R32 Drill Bits
​
Kenella R32 drill bits are threaded button (or cross) bits designed to connect directly to R32 drifter rods in top hammer percussive drilling systems.
​
They are consumable tools, with button selected configuration (number, size, and shape) based on rock hardness and drilling conditions for optimal performance and longevity.
Did you know?
-
The R32 thread is not just a size — it’s a standardised left-hand rope thread under ISO 10208, which means compliant R32 bits, rods, couplings and shank adaptors are designed to physically connect across compatible systems. This makes Kenella R32 drill bits especially practical for operations running mixed or replacement tooling, because the thread system supports interchangeability rather than locking the user into one setup. [iso.org], [iso.org], [litechtools.com]
-
A worn R32 button bit doesn’t always need to be discarded straight away — scheduled resharpening can significantly extend bit life and lower drilling cost per metre. Sandvik field testing showed that moving from “drill to destruction” to planned resharpening increased total drilling distance from about 170 m to 340 m on the same bit type, while reducing cost per metre by up to 43% in that case
Download Brochures
Applications
-
R32 bits paired with drifter rods are widely used in underground mining, tunnelling, drifting, and rock bolting.
-
They excel in short-to-medium length holes (typically up to 4–6 m) in medium to hard rock formations, delivering high penetration rates and precision.
Advantages
-
Excellent balance of strength, flushing efficiency, and wear resistance.
-
Reliable energy transmission from the drifter through the rod to the bit.
-
Cost-effective and versatile for many underground operations.
Product Range
-
Thread: R32 (Rope thread, ~32 mm nominal diameter) — a common, robust thread for small-to-medium diameter drilling. It provides good energy transfer and durability under high-impact loads.
-
Typical diameters: 41 mm, 43 mm & 45 mm (most common for drifting/tunnelling), up to 64 mm or larger for specific applications like reaming.
-
Design: Typically, tungsten carbide button bits are made with spherical or ballistic buttons. Face shapes include flat face (for hard/abrasive rock) or drop center (for better centering and flushing in softer rock).
Need a quote?
Let us know what you need.
We're here to assist you and your business.
