Diesel impact / Berminghammer / B-21
B-21
Berminghammer Clean Series. Diesel impact hammer.
| Specification | Imperial | Metric |
|---|---|---|
| Ram weight | 4,630 lb | 2,100 kg |
| Rated energy (maximum) | 53,200 ft-lb | 72 kJ |
| Maximum stroke | 11.5 ft | 3.5 m |
| Blows per minute | 35-56 | |
| Hammer weight | 9,300 lb | 4,220 kg |
| Hammer length | 17.5 ft | 5.3 m |
Stroke shown is stroke at rated energy; published range of operation 4.5-11.5 ft at 56-35 blows per minute. Kinetic energy at rated stroke 32,010 ft-lb. Total typical operating weight (guides, trip, drive housing) 11,650 lb. Imperial and metric figures are both as published by Berminghammer.
Source: Berminghammer Model B-21 info sheet PDF (berminghammer.com), Oct 2026. Confirm specifications with the manufacturer.