Blocks

63 companies | 1564 products
Blocks
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New 2nd Generation Racing blocks features:

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Lewmar synchro block are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimised block geometry, a Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over...

Lewmar synchro block are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimised block geometry, a Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over...

Lewmar synchro block are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimised block geometry, a Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over...

Lewmar synchro block are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimised block geometry, a Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over...

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KBO lashing blocks have the best size to weight ratio on the market.
KBO rope lashing makes fitting easier and quicker than standard shackle
LIGHT...

LIGHTER PURCHASE
SYSTEMS
Enjoy the KBO benefits
by tuning your deck gear.
The KBO range is available in double and triple blocks
with...

LIGHTER PURCHASE
SYSTEMS
Enjoy the KBO benefits
by tuning your deck gear.
The KBO range is available in double and triple blocks
with...

KBO lashing blocks have the best size to weight ratio on the market.
KBO rope lashing makes fitting easier and quicker than standard shackle
LIGHT...

LIGHTER PURCHASE
SYSTEMS
Enjoy the KBO benefits
by tuning your deck gear.
The KBO range is available in double and triple blocks
with...

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When used in conjunction with heavy loads (mastfoot block, spinnaker tack point), normal friction blocks are heavy and take up space. Following on from our success with the MX halyard shackle, Wichard is proud to present the MXL: a new soft block solution for ropes. Accessible to all, the MXL is strong, reliable, light and fits...

When used in conjunction with heavy loads (mastfoot block, spinnaker tack point), normal friction blocks are heavy and take up space. Following on from our success with the MX halyard shackle, Wichard is proud to present the MXL: a new soft block solution for ropes. Accessible to all, the MXL is strong, reliable, light and fits anywhere.

...

When used in conjunction with heavy loads (mastfoot block, spinnaker tack point), normal friction blocks are heavy and take up space. Following on from our success with the MX halyard shackle, Wichard is proud to present the MXL: a new soft block solution for ropes. Accessible to all, the MXL is strong, reliable, light and fits anywhere.

...


Commentary

Complete range of blocks
Excellent high-speed low load and high-function load characteristics
Interchangeable head...

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

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The patent-pending T2 Ratchamatic is Harkens newest block to feature the T2 lines styling and soft-attachment system.

The weight of this high-strength block is only a few ounces. This is thanks to composite fiber-reinforced sideplates, hardcoat-anodized aluminum sheave, a lightweight soft-attach, and...

The patent-pending T2 Ratchamatic is Harkens newest block to feature the T2 lines styling and soft-attachment system.

The weight of this high-strength block is only a few ounces. This is thanks to composite fiber-reinforced sideplates, hardcoat-anodized aluminum sheave,...

Cruising ESP blocks complement our existing blocks in looks and function, but are simpler in design and...

The 16 mm is Harkens® smallest block. It is perfect for small...

The 16 mm is Harkens® smallest block. It is perfect for small...

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This series offers extremely high working loads (SWL = 400 Kg) while still compact and lightweight.
The sheave is made of resin with a double lateral ball-bearing. Cheekplates are made of perfectly polished AISI 316 stainless steel.
The...

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 teflon...

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 teflon...

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 teflon...

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 teflon...

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Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less...

Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less...

Integrated stainless steel hub to accept lashing...

Smart Features

* Ultra Lightweight
* Low friction 2-stage Orbital...

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STAINLESS CHEEKS
Large window to reduce weight and
allow easy rinsing
ROLLER BEARING
SYSTEM Delrin needle
bearing...

STAINLESS CHEEKS
Large window to reduce weight and
allow easy rinsing
ROLLER BEARING
SYSTEM Delrin needle
bearing...

STAINLESS CHEEKS
Large window to reduce weight and
allow easy rinsing
ROLLER BEARING
SYSTEM Delrin needle
bearing...

STAINLESS CHEEKS
Large window to reduce weight and
allow easy rinsing
ROLLER BEARING
SYSTEM Delrin needle
bearing...

STAINLESS CHEEKS
Large window to reduce weight and
allow easy rinsing
ROLLER BEARING
SYSTEM Delrin needle
bearing...

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Compact stanchion lead system

Compact furling line guide system
Reduces line friction...

This jammer block is for situations where a fixed foot block can’t help: peeling spinnakers, or changing a sheet winch

Controlled...

This jammer block is for situations where a fixed foot block can’t help: peeling spinnakers, or changing a sheet winch

Controlled...

{{productDetail[21703]}}

20mm Dynamic Block

Ezi-Tii

They may look similar to some of our competitors but take a closer look at the finer details of their design, the...

30mm Dynamic Block
Ezi-Tii

They may look similar to some of our competitors but take a closer look at the finer details of their design, the quality...

40mm Dynamic Block
Ezi-Tii

They may look similar to some of our competitors but take a closer look at the finer details of their design, the quality...

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Light anodised alloy and stailess steel AISI 316 with derling sheave....

Light anodised alloy and stailess steel AISI 316 with derling sheave....

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Item guide:
EZPulley 25 – TSXM 2012...

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The Rutgerson block assortment is unique in its design and functionallity....

The Rutgerson block assortment is unique in its design and functionallity....

The Rutgerson block assortment is unique in its design and functionallity....

The Rutgerson block assortment is unique in its design and functionallity....

The Rutgerson block assortment is unique in its design and functionallity....

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Nylon pulleys with brass support

Specifications

Art. ...

Nylon pulleys with brass support

Specifications

Art. ...

{{productDetail[30300]}}

From over 20 years Solimar produces wooden, tuphnol, stainless steel blocks bronze fittings for classical boats.
All the fittings are made with outer original shape by using modern technologies.
Many versions and...

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Wintech manufactures several standard snatch blocks.

Known for their top...

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Our Carbon Blocks are produced with emphasis on...

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

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

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

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

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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.

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