Orbit™ Cheek Block - Ball Bearing
Series 55
Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction, while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.
The proven Ronstan 2-stage bearing system (Series 30 and larger) features high-compression-grade Acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range. The sheave and bearing system is supported by a fibre-reinforced load frame, computer modelled and optimized using advanced stress analysis methods.