Blocks

How to choose this product

block

A block comprises a sheave, or wheel held between two cheeks and a fitting to attach the unit to a fixed point. Its use multiplies mechanical advantage and reduces wear on the lines that run through it.

Applications

Blocks are used to make up block and tackle to increase purchase, as well as for halyard, sheet and other leads. Thus, they are typically found on sailboats, but may be used on any type of boat or ship, even if only for hoisting a flag or for davit operation.

Technologies

Block sheaves can be single, double, triple or even more. Most are of aluminum, stainless steel or titanium, though wood is often used on traditional sailboats. Cable blocks usually have a metal sheave. In friction blocks, the sheave is in direct contact with the axle, while other types have ball bearings or rollers.

Ratchet blocks have internal springs and a toothed mechanism to keep tension on the line between two pulls. They are most common in dinghy sailing. Block anchoring is via a shackle, a swivel or snap shackle, a fork or another system, which will depend on the rotational or torsional freedom of movement required.

How to choose

Roller models are probably the most efficient, combining the friction reduction of ball bearings and the superior sturdiness of the roller. Each block's rated operational and breaking load must be respected, as well as the maximum line diameter it can handle.

68 companies  |  1507 products (boat or nautical equipment)

Sailboat double block with swivel / becket (max. rope ø : 10 mm) 94206 Wichard

Commentary Complete range of blocks Excellent high-speed low load and high-function load characteristics Interchangeable head fastening systems for multiple attachment...

153

Single flat cheek block for sailboats (max. rope ø : 6 mm) PBB 60 - SWL = 1500 KG Seldén

HIGH LOAD PBB These blocks are optimised for wires or Dyneema®/Spectra® core. TECHNICAL FEATURES Stainless steel, electro polished...

129

Sailboat single lashing block (max. rope ø : 14 mm) 2 T | KB14 Karver Systems

SIMPLICITY AND DESIGN Simple, reliable and efficient - the Karver KB block combines both freedom of attachment and extreme safety LIGHT WEIGHT Compared to traditional blocks (at equal working...

47

Sailboat double block with swivel (max. rope ø : 12 mm) 01476-25 Eval

STAINLESS STEEL BLOCKS WITH DOUBLE WHEELS AND SWIVEL Code 1476-25 , Dimensions mm L...

2

Sailboat triple block with swivel HTX Lewmar

HTX Blocks Cruising and Racing Blocks Available Spring...

13
145

Sailboat triple block with swivel (max. line ø : 10 mm) HT 92061 Holt

ORGANIC BEARING SYSTEM Aluminium large central axle provides a lightweight alternative to the stainless....

216

Sailboat halyard lift single block OFFSHORE Bainbridge international

Designed for offshore applications including Volvo, BT Global Challenge and performance...

2

Sailboat single block for stanchion WL/2 Spinlock

Compact Stanchoin Lead System Features and Benefits - Safe, compact design - Reduces furling line friction -...

19

Fiddle block with swivel / becket for sailboats (max. line ø : 14 mm) A2044 Allen Brothers

A2044 40mm Dynamic Block Swivel with 20mm fiddle block and becket The 40mm dynamic bearing block is an essential piece of equipment...

85

Fiddle block with swivel for sailboats (max. line ø : 14 mm) BL = 3800 KG Rutgerson

The Rutgerson block assortment is unique in its design and functionality. The key to its success is that both the sheave and the cheeks are produced from a high-tech composite material of such a great strength that no stainless steel reinforcement is needed....

62

Wood and bronze block for classic sailboats Solimar

Simple,double and triple blocks,with and without becket,fieddle...

Sailboat single block with swivel 60 - SWL = 800 KG Antal

New by Antal the One Piece Frame block, the block without pins or screws, it is a light and strong solution: simply a hard black anodized and...

38

Sailboat double block with swivel (max. rope ø : 30 mm) Hi-MOD Petersen Stainless

The Hi-MOD Marine Blocks are a simple and durable cruising block which work well under heavy loads and are less prone to jamming . Made...

3

Sailboat double block with shackle / becket 19.84 Sea Sure

19mm carbon fibre cheeked ball race blocks Light weight, high load carrying capacity blocks Reliable race proven designs High wear resistant cheek material extends life if miss-lead occurs Freewheeling...

6

Triple wire-block with fixed head / becket for sailboats (max. wire ø : 4 mm) 35325 650 55 - BL = 450 KG Sprenger

Advantages: •easily running ball bearing stainless steel •bearing shell and balls of stainless steel •wobble riveting:...

189

Sailboat double block with fixed head Equiplite Europe

Equiplite™ Dual Sheave Block use DSK 75 ULTRA loops to take the loads directly through the centre of the sheave. This allows the blocks to be extremely...

6

Sailboat stainless steel single block Rondal

Elegantly designed, and constructed from high-gloss stainless steel 316 with black anodised and Teflon-sealed sheaves, Rondal blocks combine elegance and efficiency with...

Single flat cheek block with jamming cam for sailboats (max. rope ø : 16 mm) 82999 Barton Marine

High Load Blocks manufactured from marine grade aluminium and 'Spectro' grey anodised for high UV stability and durability. Sheaves are precision urned from...

8

Sailboat double friction block with lashing (max. rope ø : 7 mm) CSS242 Colligo Marine

Enhanced Double Lashing Block, 7 mm, Black Price: US$69.00 Ask a question about this product Our Patent Pending, Enhanced Double...

9

Block for classic sailboats 2FA200S - SWL 1400 La Nantaise de Poulies

Fonctionnalities Simple Hand Strap Optional Becket Optional Rope Specifications Force II blocks are made in order to join together the design features and the highest esthetics...

31

Double block for classic sailboats Dryade

Dryade blocks are made in a wide variety of sizes accepting sheaves of diameters from 30 to 160 mm in the standard series. The technical and marine shells,...

11

Idler pulley for boat steering system 776BR-4AL Edson International

Edson’s Adjustable Crossed-Wire Idler - for use on boats where the quadrant is aft of the rudderpost or on Radial Drive Steering Systems when the pedestal is located forward of the...

18

Sailboat double block with shackle / becket S315 SINOX INTERNATIONAL

Field of application Mame blocks are specifically...

9

Sailboat double block with swivel (max. rope ø : 14 - 33 mm) BL = 600 -> 18000 KG OH MARINE EQUIPMENT

Our High Performance blocks are developed with emphasis on design and strength. The blocks have aluminium ball...

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