*mynauticexpo

blooks

Product catalog summary

Overview: The document provides guidance on selecting the appropriate block for different types of boats and applications, focusing on the choice between plain sheave and ball bearing blocks.

Boat Types: The document categorizes boats into dinghy, day boat, yacht, and small catamaran cruising boats, with specific recommendations for each type based on size and navigation program.

Block Selection: The choice of block depends on the navigation program and the specific application on board. The document provides a matrix indicating the suitability of standard and cruiser blocks for different boat types.

Technology Choice: The decision between plain sheave and ball bearings is based on the application. Plain bearing blocks are recommended for high static loads to avoid ball distortion, while ball bearing blocks are preferred for applications requiring smooth adjustments under load.

Ball Bearing Blocks: These blocks feature components made from 316 stainless steel, including a heavy-duty forged stainless bar shackle, solid stainless trunnion type swivel assembly, and stainless steel internal side plates. The sheave is made from Acetal resin, and Delrin ball bearings are used.

Plain Bearing Blocks: These blocks are suitable for applications with high static loads, eliminating the risk of ball distortion. They are recommended for mast foot blocks, mast head halyard blocks, kicker or vang tackles, and other high-load applications.

Applications: The document lists various applications for both plain bearing and ball bearing blocks, such as mainsheet systems, jib/genoa sheet systems, and spinnaker lead blocks.

Recommendations: Users are advised to refer to technical specifications, including the safe working load (SWL), and seek advice if unsure about the correct application.

Catalog excerpts

WHICH BLOCK FOR MY BOAT ? Depending on the navigation programme. Block model small catamaran cruising boat, WHICH TECHNOLOGY ? Example : Bearings in ball blocks can distort if left under static load for long periods. In such a situation, the choice of a plain bearing block is recommended. flements given here are only Ball bearing blocks All load bearing parts are of 316 stainless steel. A : Heavy duty forged stainless bar shackle. B : Solid stainless trunion type swivel assembly. C : Stainless steel internal side plates. D : Sheave is moulded from Acetal resin. E : Delrin ball bearings. F : Side plates are precision moulded from glass impregnated nylon. G: Block is through bolted and spin rivetted Single, double, triple, snatch, fiddle, stand-up, cheek, stanchion... Plastimo offers a comprehensive selection of blocks.

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