Series 55 Orbit Upright Lead Block

Product description

Kilogram for kilogram of working load, BB and RT Orbit Blocks™ are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub.

Lightweight

The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

Highest working load in its class

The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised. The Dyneema® Link is produced from SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.

FEATURES

• Ultra Lightweight
• Low friction 2-stage Orbital ball bearing system
• Highest working load in its class
• Low profile and compact
• High performance cleating

SPECIFICATIONS

• Sheave Ø 55 mm
• Max Rope Ø 10 mm
• M.W.L. 500 kg
• B. L. 1000 kg
• Weight 91 g