Size 3

Barton Ball Bearing Blocks feature a unique super-low friction ball race system, comprising acetal sheaves and delrin ball bearings running on a large diameter centre boss.
The Barton ball bearing design fits in more load-bearing balls, and consequently promotes extremely low friction performance, even under high loads.

Specification:
Metric (Imperial)
Sheave Size: Single 45mm x 13mm (1 3 /4 x 1/2")
Maximum Rope Diameter: 10mm ( 3 /8")
Breaking Load: 800Kg (1763 lbs)
Safe Working Load: 400Kg (881 lbs)
Length: 111mm
Weight: 130g