Foundation drilling / HD330A
HD330A 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
- HD330A
- Hammer outside diameter
- 330 mm
- Recommended hole range
- 350–450 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 13
| Length, excluding bit | 2063 mm |
|---|---|
| Weight, excluding bit | 1050 kg |
| Hammer outside diameter | 330 mm |
| Compatible bit shank | HD330A |
| Recommended hole range | 350–450 mm |
| Connection | API 7 5/8" REG |
| Working air pressure | 10–20 bar |
| Impact frequency, reference | 20.0 Hz @ 17 bar |
| Recommended rotary speed | 30–40 rpm |
| Recommended axial thrust | 32 kN |
Reference air consumption
| Air pressure | Air consumption (m³/min) |
|---|---|
| 14 bar | 43.0 |
| 17.2 bar | 53.8 |
| 20.7 bar | 64.58 |
| 24 bar | 77.5 |
Catalog data is for selection reference. Confirm current specifications, connection, air supply and ground conditions with the supplier before ordering.
