70mm Blocks - Size 7

The 70mm sheave Barton Marine Size 7 high load cruising block range is engineered for superior strength and performance and offers both plain and ball bearing sheave assemblies.

The range features high grade glass fibre nylon reinforced moulded side plates with internal 316 stainless steel frame that is through-bolted and riveted for added strength and durability. This well designed and versatile range is engineered for use on larger cruising and racing yachts and is compatible with our ball bearing mainsheet traveller system.

Plain bearing blocks

Barton plain bearing blocks have a precision moulded acetal sheave running on a large diameter brass bearing, ensuring free running under the highest of loads.

Ball bearing blocks

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 us to fit more load-bearing balls, which ensure extremely low friction performance, even under high loads.

• Single 70mm x 20mm (2 3 /4 x 3/4")
• Fiddle 44/70mm x 17mm (1 3 /4 x 2 1/4" x 5/8")
• Max rope diameter 14mm ( 9 /16")
• SWL 1250Kg (2750 lbs)
• Break load 2500Kg (5500 lbs)
• Max rolling load (ball bearing blocks) 875kg 1929 lbs)