Ronstan Series 75 Single Upright Lead BlockSheave Ų - 3 in.
Max. Rope Ų - 9/16 in.
Max. Cable Ų - in
Fastener Ų - 3/8 + 5/16 in.
M.W.L. - 4390 lb.
B. L. - 8770 lb.
Weight - 12.4 oz.
The self-contained alloy sheave packages provide reliable, low-friction performance at high loads. The high axial loads are carried by Torlon® roller needle bearings, while side thrust loads are taken up by Acetal ball bearings.
Typically used for halyards at the mast base.
Alloy sheave and housing
Torlon® needle rollers
Black carbon Acetal ball bearings