LEWMAR
40mm Control Block, Single with Strap

$27.99

Fulfilled from vendor
Model # 13350988 | Mfg # 29901441BK | UPC # 743683205057

Ball bearing blocks deliver sensitivity to hand held loads.

This 40mm single block is a workhorse and can be used for a wide range of uses and is ideal for applications that benefit from having a fixed (non-swiveling) block. Great for halyard turning blocks, boom vangs and loads more. The smaller sheaves are compatible with up to 3/8"

Sailors can detect changes in wind intensity and direction by feel. Hand held loads of the main and headsail, spinnaker and other control lines communicate valuable information to the crew. Lewmar Control Blocks are designed to keep these lines of communication open. By using ball bearings, Control Blocks assure sailors that small signals won’t be lost in unnecessary drag or friction. These light weight blocks are ideal for control lines and other hand-held loads. Long fiber technology used in the construction of the composite cheeks adds strength while keeping the overall weight down. An open design is used in the cheeks to reduce maintenance: saltwater and sand can be easily flushed from the block and the bearings lubricated.

The sheaves use the same long fiber technology for strength and feature a metal insert for the bearing surface. This addition improves performance and longevity. Line size compatibility and safe working loads are indicated on the sheave of each block to avoid failures caused by overloading the block. Get the messages your boat and sails are sending you loud and clear with help of ball bearings and Lewmar Control blocks.

Key Features

  • Light weight blocks that are ideal for hand held controls
  • Ball bearings deliver smooth and long lasting performance
  • Long fiber technology is used in composite cheeks to add strength while reducing weight
  • Composite sheave with metal bearing surface
  • Sheaves are marked with safe working loads and line compatibility
  • Compatible with up to 3/8" line
  • Ideal for medium dynamic loads
    • Halyard turning blocks
    • Backstay systems on dinghies and smaller keelboats
    • Boom vangs
    • Barber haulers

Selection Guide

Sheave DiameterLine Range
30mm5/16" (8mm)
40mm3/8" (10mm)

Specs

40mm Control Block, Single with Strap

Name Value
Becket No Becket
Diameter 5/16 Inch or 8 mm
Direction Any
Integral Cleat No Integral Cleat
Mount Type Fixed Lashing Eye
Ratchet Non Ratcheting
Safe Working Load 528 Pounds
Sheave Diameter 40 mm
Type Single
Weight 1.6 Ounces

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