Ronstan Series 40 All Purpose Single Cheek BlockExceptionally high working loads
Low maintenance, long service life
Sheave Ø - 1 9/16 in.
Max. Rope Ø - 7/16 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 880 lb.
B. L. - 2200 lb.
Weight - 2.3 oz.
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave.
Spinnaker control lines on off-the-beach catamarans, one design classes and sports boats up to 8m (26ft)
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel cheeks