Ball Bearing

RF45130

Series 40 Ball Bearing Orbit Block™, Single with Becket and Cleat

Single, Becket, Cleat, Swivel Head*

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

Product Specifications
B.L. (kg)650
M.W.L. (kg)250
Max. Rope diameter (mm)9
Weight (g)105
Pin Ø (mm)4
Notes:Total block load. Becket MWL 125kg (275lb), BL 250kg (550lb). Suitable for 3:1 system at rated block load. Line load through cleat not to exceed 125kg (275lb).

Product Information

Lightweight
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. Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result? The lowest weight possible. Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block.

Highest working load in its class
. 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. The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised.

Technical Information

Materials

Ball Bearings - High compression stregnth carbon black Acetal. Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon. Frame/Cheeks - Toughened, glass fibre reinforced Nylon. Sheave - Carbon fibre reinforced, PTFE impregnated Nylon

 

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