6.7.5 Drum The drum consists of a stainless steel casing to which the two flanges are crimped. Three Carboran lifters are pressure-fitted to the internal face of the drum. The drum spider, in aluminium alloy, is secured to the edge of the drum by screws. A brass bushing is pressure-fitted to the drum shaft. 1. Drum casing 2. Flange 3. Drum lifter 4. Drum spider 5. Screws 6. Drum shaft 7. Drum shaft bushing Drum spider SOI/DT 2002-05 eb 40 599 35 23-17