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Barton Size 4 Double Plain Bearing Blocks

Size 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.

Overview
	Single 58mm x 17mm (2¹/₄ x ⁵/₈") Fiddle 32/58mm x 17mm (1¹/₁₄ x 2 ¹/₄" x ⁵/₈")
	Max rope diameter 12mm (⁷/₁₆")
	SWL 630Kg (1385 lbs)
	Break load 1260Kg (2770 lbs)
	Max rolling load (ball bearing blocks) 440kg 970 lbs)

All 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 our 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.

Important note - 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. If unsure, please seek further assistance.

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


Fixed Eye Clevis Pin	Fixed Eye	Reverse Shackle	Swivel	Snap Shackle	Variloc Multi Head	Becket
A simple, low priced fixed eye block with removable clevis pin for attachment. Pin Ø 6mm. Width between straps 13mm.	With plain attachment eye.	Removable shackle that can be set in-line or at 90° to the sheave.	Fully swivelling head with removable shackle.	With a cast stainless steel swivelling snap shackle. Ideal for quick-release downhauls or vang tackles.	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.	All the appropriate 58mm blocks are available with or without becket

Double size 4 blocks

Double size 4 blocks
Size 4 Double - fixed eye	04 210	115	270
Size 4 Double - fixed eye + becket	04 211	135	286
Size 4 Double - reverse shackle	04 220	130	275
Size 4 Double - reverse shackle + becket	04 221	147	288
Size 4 Double - swivel	04 230	138	291
Size 4 Double - swivel + becket	04 231	162	305
Size 4 Double - upright	04 250	92	321

The Barton Marine Blocks have been grouped in size (rope diameter) followed by ball bearing or plain bearing, then single sheave, double sheave, fiddle etc. We carry a large quantity of Barton products in stock but if your item is out of stock we can usually supply within ten days.

Size 4 Double Block Choose Here

Our Price: £25.90

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