A strong, lightweight range of blocks for
use on dinghies and dayboats or as lead blocks on larger craft.
With Barton's unique super-low friction ball
race systems, featuring acetal sheaves and delrin ball bearings, running
on a large diameter centre boss. This allows more load-bearing balls to
be fitted, which ensure extremely low friction performance, even under
Sheave size 20mm x 8mm (25/32 x 5/16")
Max rope diameter: Max rope diameter 5mm
Max rope diameter: SWL 275kg (606lbs)
Break load Break load: 550Kg (1210 lbs)
Max rolling load Max rolling load (ball
bearing blocks): 130kg (286lbs)
Important note - break loads:
Where break and safe working loads are
stated, it is assumed that all sheaves are evenly loaded as in a
purchase tackle. Uneven loading, or loading of one sheave in a double or
triple block, will severely affect strength quoted. If unsure, please
seek further assistance.
Maximum rolling load on ball bearing blocks
is the maximum free running load before ball bearings will distort.