200 kelly box made of heat-treated cast steel with two locking pins, with Betek Tungstuds (uncases) or wear strips (cased) as wear protection along body and bottoms. Blades in Hardhox HB 500.
The bottom gate can be opened manually or mechanically via a spring loaded pin.
A ventilation pipe prevents the development of a vacuum during extraction.
Application: Cleaning the bottom of the borehole
Technical Dimensions
| D (mm) | Ø OD (mm) | Weight (kg) |
|---|---|---|
| 520 | 620/540 | 567 |
| 650 | 750/670 | 811 |
| 780 | 880/800 | 987 |
| 900 | 1000/920 | 1183 |
| 980 | 1080/1000 | 1325 |
| 1060 | 1180/1100 | 1513 |
| 1180 | 1300/1220 | 1676 |
| 1350 | 1500/1400 | 2202 |
| 1650 | 1800/1700 | 2430 |
| 1830 | 2000/1880 | 2670 |
