5.5" DTH "HP" Hammer
RH55Q1HP - Uses QL5 Shank DTH Bit

Designed for drilling 5.5" and larger holes.

Features

- Designed for blast hole drilling but certainly not limited to blast holes. 
- Wearsleeve is reversible.     
- The piston is the only moving part making this hammer very reliable.
- All external parts are hardened to resist wear.
- Designed for maximum penetration while using minimal fuel consumption.
- Still utilizes long proven piston design.
- All parts are made from US Certified Steel.

Download RH55Q1HP Hammer Manual.

Value	English	Metric
Outside Diameter	5 inch	127 mm
Overall Length   (without bit)	44.7 inch	1135 mm
Operating Length   (API shoulder to bit face)	44.6 inch	1133 mm
Total Weight	148 lbs	67.1 kg
Bore Size	4.1 inch	104 mm
Piston Weight	31 lbs	14 kg
Drillpipe Connection *	3 1/2 Reg API pin up	3 1/2 Reg API pin up
Wrench Flats	3.5 inch	88.9 mm
Hole Size Range	5 1/2 inch - 6 inch	140 mm - 152 mm
Bit Shank	QL5	QL5
Min Air Volume Required **	250 cfm	7 cmm
Max Operating Pressure	500 psi	34 bar

​* Other connections available upon request
** Hammer will run on less volume but penetration rates will be       significantly slower.