Blocks
A block is a single or multiple pulley. One or more sheaves are enclosed in an assembly between cheeks. In use a block is fixed to the end of a line, to a spar, or to a surface. Rope or line is threaded through the sheaves. Some blocks have a ratchet, which means that they turn freely when you pull a line in one direction but do not turn in the other direction. This makes a line easier to hold especially on a windy day.
Work on our range of blocks has headed the effort to find new standards of performance and construction. Allen invented the science behind the patented Allen dynamic bearing technology, and all our high performing blocks use this as a basis of the inner bearing system. Allen also invented and patented the Ultra-strap technology, a very narrow strap of high strength stainless steel, which can be lashed without the fear of line abrasion associated with blocks of traditional strap construction.
The sheaves and cheeks are moulded from advanced engineering polymers, which are all wrapped up in meticulously designed stainless steel cheeks, adding strength to the moulded components. This gives you a beautifully engineered high performance block which easily handles maximum loads.
Block range: 20mm, 30mm, 40mm and 60mm
Sheaves: Acetal resin
Cheeks: Glass filled nylon with 316 stainless steel straps
Axle: 316 stainless steel
Ball bearings: 315 stainless steel
The Allen 20mm dynamic bearing block is simply the best designed and engineered micro block on the market.
Line friendly so...
[ more info ]
With the Allen dynamic bearing technology at the heart of this block, the line friendly soft contours allowing articulation and ...
[ more info ]
The 40mm dynamic bearing block is an essential piece of equipment with a range of applications suitable for mainsheet, jib, spin...
[ more info ]
Compact switchable ratchet for use on the sheeting system of a high performance dinghy such as the 29er/49er or RS400. ...
[ more info ]
Allen Brothers were pioneers in the development of the first automatic ratchets some 15+ years ago. The clever internal mechanis...
[ more info ]
The original automatic ratchet block - with more than 15 years of development to ensure reliability and performance when require...
[ more info ]
The 60mm dynamic block range was designed particularly for the sports boat market it can be used in a variety of appli...
[ more info ]
This block has a ratchet mechanism that can be switched on and off, even under load and the swivel head can be locked in a fixed...
[ more info ]
The Allen high tension stainless steel block range is specifically intended for use where wire, dyneema and spectra lines a...
[ more info ]
Light weight plain bearing block.
With 316 stainless steel cheeks and either brass or acetal sheaves...
[ more info ]
The Allen plain bearing all nylon sheet blocks can be used in a number of applications. They have been adop...
[ more info ]
This plain bearing budget block range is a suitable alternative to the dynamic block range where performance and style...
[ more info ]
30mm and 40mm dynamic bearing technology with an easy to use mechanism for opening and closing the cheeks providing a simple and...
[ more info ]
A simple yet effective choice of stainless steel and pressure die-cast aluminium V cleats with aceetal sheaves and a choice of h...
[ more info ]
Large cylindrical springs are designed to suit blocks such as the Ezi-ratchet as well as some of the blocks in the A2030 range a...
[ more info ]
