Foundation drilling / HN125A
HN125A DTH Hammer & Bits
Foundation drilling · matched hammer and bit
A supplier-catalog hammer series for foundation drilling. Select the bit, shank, connection and air supply together. Refer to the original parameter sheet for dimensions and operating limits; confirm the current specification before purchase.
- Model / family
- HN125A
- Hammer outside diameter
- 275 mm
- Recommended hole range
- 305–350 mm
Technical data is listed below. The complete catalog is available when discussing your requirements.
Inquire about this product ↗PRODUCT DATA
Request the complete catalog ↗Technical specifications
Extracted from the supplier catalog · PDF page 7
| Length, excluding bit | 1956 mm |
|---|---|
| Weight, excluding bit | 578 kg |
| Hammer outside diameter | 275 mm |
| Compatible bit shank | HN125A / NUMA125 |
| Recommended hole range | 305–350 mm |
| Connection | API 6 5/8" REG / API 7 5/8" REG |
| Working air pressure | 10–25 bar |
| Impact frequency, reference | 20.0 Hz @ 17 bar |
| Recommended rotary speed | 15–35 rpm |
| Recommended axial thrust | 26 kN |
Reference air consumption
| Air pressure | Air consumption (m³/min) |
|---|---|
| 14 bar | 32.94 |
| 17.2 bar | 45.63 |
| 20.7 bar | 50.10 |
| 24 bar | 54.54 |
The NUMA125 shank option is specified without a foot valve.
Catalog data is for selection reference. Confirm current specifications, connection, air supply and ground conditions with the supplier before ordering.
