This Numa Series high air pressure DTH hammer work with foot valve is developed and manufactured by our Design,

which is the one of the most advanced DTH hammer in the world.

STAROCKDRILL's technician team have been testing and improving for years before successfully researching the Super Drill Series products. We have

1. 10 years manufacturing experience

2. Certificate: ISO9001:2015

3. Standard: API

For this Numa Series DTH Hammer, it is with better flushing off effect and not easy to block the rock. With higher efficiency and more energy saving, 

drilling speed is 15-30% higher than common version, 20-30% energy saving.

STAROCKDRILL’S’ DTH hammers are all simple structure, easy to assemble and disassemble, as well as reliable quality and long service life. 

STAROCKDRILL has various hammer models suitable to drill holes from 64mm to 1000 mm (2-1/2” ~ 39-3/8”) in diameter; and come with three kind: 

low pressure (5 ~ 7 bars), middle pressure (7 ~ 15 bar) and high pressure ­­(7~ 30 bars).

STAROCKDRILL’S  DTH hammers mainly be produced with shank type of DHD, QL, NUMA, COP, Mission, SD, BR, CIR,TD.40 MACH44 and STR series, 

Diameter ranging from 2” to 8” for mining and quarrying, and 6” to 32” for water-well drilling, oil-well drilling and foundation and so on.

Hammer shank + Inches

(If you are not knowing the sizes, we can give you suggestions on hammers and bits)