Barton Traditional Series 4 (58mm) Blocks

A strong, lightweight range of blocks for use on dayboats and cruising yachts. Ideal for mainsheet, vang tackles, lead blocks or wherever a powerful and compact purchase tackle is required.

A comprehensive range of cam cleat, fiddle and fiddle & cam cleat versions are available.

Specifications

• Sheave Size (Single): 58mm x 17mm (2 1/4 x 5/8″)
• Sheave Size (Fiddle): 32/58mm x 17mm (1 1/14 x 2 1/4 x 5/8″)
• Max Rope Diameter: 12mm (7/16″)
• Safe Working Load: 630kg (1385lbs)
• Break Load: 1260kg (2770lbs)
• Max Rolling Load (Ball Bearing Blocks): 440kg (970lbs)

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 6mm. 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.

Snap Shackle
With a cast stainless steel swivelling snap shackle. Ideal for quick-release downhauls or vang tackles.

Variloc Multi Head
Allows swivel to be locked at 30° positions in relation to sheave. Inverting the plastic locking piece converts the swivel mode. Supplied with screw pin strip shackle.

Becket
All the appropriate 58mm blocks are available with or without becket.

Stand Up
Features a flexible plastic spring for anti-tumble action. Base Ø 58mm. Fastenings 5mm.

Stanchion Lead
Designed for use on 25mm Ø tubes, with a swivelling action and up-down movement allowing fair lead on control lines.

Cheek
With a plastic backing plate standard to eliminate damage to spars etc. Base size 107mm x 67mm. Fastenings 5mm.

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

Cam Cleat Blocks
Fitted with Kevlar “K” cams (or plastic where stated). Cam arms are fully adjustable by moving the locking clevis pin to achieve the correct cleating angle. Used in conjunction with the relevant top block, this range of blocks is particularly useful for mainsheet, vang tackles or downhauls on dinghies, dayboats or light cruising yachts.