Power, Precision & Performance: Harlen Supplies Kenella DTH & Top Hammer Drilling Solutions
- Mar 17
- 2 min read
In mining and quarrying, drilling performance isn’t a “nice to have”. It drives productivity, influences safety, and determines your real cost per metre. Harlen Supplies manufactures and supplies high-performance Kenella DTH hammers and rods, as well as Kenella Top Hammer bits and rods, engineered to handle tough ground and sustained duty cycles.

Why drilling tool selection matters in the field
Every hole is a production decision. Tooling that maintains energy transfer, resists wear, and holds straightness reduces:
unplanned stops,
rework from deviation,
consumable churn,
and avoidable compressor and rig strain.
The goal is simple: more productive metres, with fewer interruptions.
Kenella DTH Hammers & Rods: Built for deep, demanding drilling
Down-the-hole (DTH) drilling depends on impact energy, air efficiency, and durability—especially in abrasive and hard rock formations. Harlen’s Kenella DTH range is built to maximise penetration rates while staying reliable in harsh conditions.
Kenella DTH Hammers
They are designed for:
High impact energy transfer
Optimised airflow efficiency
Reduced air consumption
Consistent, straight-hole drilling
Long service life under extreme conditions
Manufactured using premium alloy steels and precision heat treatment, Harlen Supplies hammers deliver consistent blows that translate into faster penetration and improved metreage per shift.
Kenella DTH Rods
Kenella DTH rods are built for strength and endurance:
Precision-machined threads
Excellent fatigue resistance
High torque capacity
Reduced risk of thread damage
The outcome is practical: reliable connections, less downtime, and steadier production.
Kenella Top Hammer Bits & Rods: Maximum metres, maximum efficiency
Top hammer drilling demands accuracy, durability, and repeatable performance—particularly where ground conditions punish tooling and frequent changes cost time. Harlen Supplies top hammer range is engineered to perform in challenging formations while reducing tool-change frequency.
Kenella Top Hammer Bits
Top hammer bits are engineered for:
High penetration rates
Superior carbide retention
Effective flushing design
Reduced hole deviation
Extended life in abrasive formations
With premium tungsten carbide inserts and optimised face designs, Harlen Supplies bits are built to deliver more metres before replacement, reducing your cost per metre.
Kenella Top Hammer Rods
Top hammer rods are:
Precision manufactured for strong thread integrity
Heat treated for maximum fatigue resistance
Designed to reduce energy loss during drilling
Built to handle high impact and high torque loads
Strong rods mean improved energy transfer, better drilling efficiency, and consistent performance—both underground and on surface.

The Harlen Supplies Advantage: Kenella DTH & Top Hammer Drilling Solutions
Across both Kenella DTH and Top Hammer systems, we focus on three field-driven principles: Durability. Efficiency. Metreage.
Our drilling tools are built to:
increase penetration rates,
reduce downtime,
lower total drilling costs,
and deliver consistent performance in tough conditions.
Harlen Supplies supports mining, quarrying, and drilling contractors with dependable, high-performance tools designed for real-world conditions.
Strength Below the Surface.
