Barton Traditional Series 1 (30mm) Blocks

A strong, lightweight range of blocks for use on dinghies and dayboats or as lead blocks on larger craft.

Specifications

• Sheave Size: 30mm x 11mm (1 3 /16 x 7/16″)
• Max Rope Diameter: 8mm ( 5 /16″)
• Safe Working Load: 350Kg (771 lbs)
• Break Load: 700Kg (1543 lbs)
• Max Rolling Load (Ball Bearing Blocks): 245kg (540 lbs)

Available with plain or ball bearing sheaves.

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

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.

Maximum rolling load on ball bearing blocks is the maximum free running load before ball bearings will distort.

Fixed Eye Clevis Pin
A simple, low priced fixed eye block with removable clevis pin for attachment. Pin Ø 5mm. Width between straps 13mm.

Fixed Eye
With plain attachment eye.

Reverse Shackle
Removable shackle that can be set in-line or at 90° to the sheave.

Swivel
Fully swivelling head with removable shackle.

Becket
All the appropriate 30mm blocks are available with or without becket.

Upright
With or without fairlead. Fairlead prevents line falling away when not under load. Fastenings 5mm.

Spinnaker Lead
A useful block mounted on a stainless steel tang. Fastenings 5mm.

Lightweight Lead
A handy lightweight block for use where high load is not expected.