DTH Hammers
Center Rock Force Hammers
The Center Rock Force (RF) line is a valved DTH hammer built for drillers who need consistent power across geotechnical, water well, mining, and select oil and gas applications. With a tunable air cycle and reversible casing on most models, the RF line is built to get the most footage out of every hammer before it needs service.
Center Rock Force Features and Benefits
All CENTER ROCK FORCE® hammers feature a high efficiency and tunable valved air cycle to optimize performance on your compressor. Most models feature reversible casings, so your team can get the most footage from your hammer. Accessories like bit retrieval systems and jetted backheads are available for high airflow deep hole applications.

Size Range
3.5" - 12.25"

Hammer Count
9 models

Weight (lbs)
47.7 - 740 lbs
(without bit)
Great balance of simplicity and performance
Robust and reliable with minimal moving parts
Reversible casing
Solid piston
Industry-standard bit shank
DTH Mono-Hammer Features and Benefits
Utility contractors and HDD crews across the country rely on Center Rock’s Mono-Hammer for tough jobs. Built as a single, high-output DTH hammer, the Mono-Hammer handles utility pole rock sockets from 18″ to 24″ (89mm–610mm) and steers HDD pilot holes from 4.75″ to 12″ (120.5mm–305mm). With a Mono-Hammer from CENTER ROCK, contractors get one tool built for demanding jobs.

Size Range
4.75” - 12"

Hammer Count
1

Weight (lbs)
154-567 lbs (with bit)
One hammer platform covers utility pole rock sockets and HDD pilot-hole steering
Excellent Steering - Delivers precise directional control through rock, clay, sand, and cobble on HDD pilot bores
Sonde and Transmitter Compatible - bent sub and sonde housing available
Hex Connection with Side Inlet Swivel - Utility configuration includes hex connection, side inlet swivel, and all ancillary items for digger derrick mounting.
Faster Rate of Penetration - Outpaces conventional HDD pilot methods while maintaining steering accuracy in mixed formations.