Home / Industries / Open pit mining
Open Pit Mining Drilling Solution
Bench blast holes, pre-split holes and dewatering holes dominate, mostly Φ90–Φ165 mm; tools must run continuously at high air pressure with a stable cost per hole.
Scope of work
- We match DHD340A / DHD360 / QL60A hammers with bits of the same series, threads API2 3/8″–API3 1/2″REG. Spherical (SP) bits for hard rock and conical (SBL) combinations for abrasive rock reduce bit-change downtime.
- For large open-pit mines abroad, 8-inch and larger hammers and bits can be used, or mining tricone bits of Φ200–311 mm.
Models commonly used here
Selected by hole size and duty — not the whole range
DHD340A DTH Hammer
Φ99mm · hole Φ110-135mm · 40.5kg
Workhorse for small benches and pre-split holes — Φ99 mm OD for Φ110–135 mm holes, easy to handle with common spares
View product
DHD360 DTH Hammer
Φ142mm · hole Φ150-190mm · 100.5kg
Main model for medium-deep holes: Φ142 mm body covering Φ150–190 mm, stable impact energy at high pressure
View product
QL60A DTH Hammer
Φ148mm · hole Φ158-203mm · 102kg
First choice for large-diameter benches — Φ148 mm OD for Φ158–203 mm, low pressure and high air volume for fast penetration
View product