General: Are used like raise block within mining industry, but can also be used for other applications where block with large sheaves in relation to wire rope diameter is desired.
Design: Fitted plates on the sides without separate iron support. Key hole type on the lock. Large spoked sheave from molten aluminum alloy (silium) with turned pulley groove result in low weight and spare the wire rope. Bronze bussed sheaves. Countersunk grease fitting in the shaft. Derailment protection. The safety hook is turnable and flexible attached to a cross head provided with grease fitting.
- Material: High- tensile construction steel, sheave of aluminum alloy with bushing from red metal and safety hook grade 8.
- Marking: Type, WLL and max wire rope diameter.
- Finish: Blue painted.
- Safety factor: 4:1
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