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single block / plain bearing / with swivel / with shackle
single block
Racing

Working load: 800 kg
Breaking load: 1600 kg

Lewmar's Racing Blocks represent the pinnacle of our standard block range. Manufactured from the best materials, they offer incredible strength to weight ratios. Features Lockable head pin ...

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Lewmar
single block / ball bearing / for racing sailboats / halyard
single block
Racing

Working load: 2500, 1400 kg

Features Impregnated composite bearings with dual Delrin side thrust races, ideal for high static loads. Low profile head fits into pad eye for lowest lead to the winch. Alloy sheave profile for H.M P.E. line such as ...

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Lewmar
double block / ball bearing / with shackle / max. rope ø 12 mm
double block
Racing

Working load: 1800 kg
Breaking load: 3600 kg

Lewmar's Racing Blocks represent the pinnacle of our standard block range. Manufactured from the best materials, they offer incredible strength to weight ratios. Features Lockable head pin ...

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Lewmar
single block / cheek / with swivel snap shackle / for racing sailboats
single block
Racing

Working load: 1135 kg
Breaking load: 2270 kg

Ideal for general spinnaker use, the Snatch Block features the Lewmar snap shackle and soft, synthetic rubber cheeks to handle rough treatment. Where a snatch block is attached in a situation which does ...

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Lewmar
single block / mast foot / ball bearing / for racing sailboats
single block
Racing

Working load: 400 kg - 19000 kg

Lewmar's Racing Blocks represent the pinnacle of our standard block range. Manufactured from the best materials, they offer incredible strength to weight ratios. Features Lockable head pin ...

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Lewmar
single block / plain bearing / with fixed head / max. rope ø 6 mm
single block
PBB20

Working load: 70 kg
Breaking load: 140 kg

Specifications Weight: 6.00 g Safe working Load: 70 kg Breaking Load: 140 kg Max line size: 6 mm System: PBB20 Block type: single

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Seldén Mast AB
single block / plain bearing / with fixed head / max. rope ø 6 mm
single block
PPB 16

Working load: 70 kg
Breaking load: 140 kg

Specifications Weight: 6.00 g Safe working load: 70 kg Breaking load: 140 kg Max line size: 6 mm System: PBB16 Block type: single

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Seldén Mast AB
single block / plain bearing / with fixed head / max. rope ø 6 mm
single block
PPB 16

Working load: 100 kg
Breaking load: 200 kg

Specifications Weight: 10.00 g Safe working load: 100 kg Breaking load: 200 kg Max line size: 6 mm System: PBB16 Block type: single

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Seldén Mast AB
single block / plain bearing / with swivel / max. rope ø 12 mm
single block
PBB 50

Working load: 700 kg
Breaking load: 1400 kg

... Safe working load: 700 kg Breaking load: 1400 kg Max line size: 12 mm Pin diam: 5 mm Shackle diam: 5 mm System: PBB50 Block type: single

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Seldén Mast AB
single block / plain bearing / with becket / with swivel
single block
PBB 50

Working load: 700 kg
Breaking load: 1400 kg

... Safe working load: 700 kg Breaking load: 1400 kg Max line size: 12 mm Pin diam: 5 mm Shackle diam: 5 mm System: PBB50 Block type: singleBecket

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Seldén Mast AB
single block / plain bearing / with swivel / for sailboats
single block

General description The halyard block is an optional accessory to be used with Profurl flying sails furlers. Integrated into the top swivel, it allows to optimize the luff length. The sheave box stands half of the load ...

single block / friction / lashing / max. rope ø 8 mm
single block
MXL6

... 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 ...

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Wichard
single block / friction / lashing / max. rope ø 10 mm
single block
MXL8

... 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 ...

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Wichard
single block / friction / lashing / max. rope ø 14 mm
single block
MXL10

... 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 ...

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Wichard
single block / roller bearing / with swivel / for sailboats
single block
90105

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

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Wichard
single block / roller bearing / with swivel / with becket
single block
90106

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

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Wichard
single block / plain bearing / lashing / max. rope ø 6 mm
single block
KBO1

Working load: 150 kg
Breaking load: 300 kg

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 WEIGHT The design and material optimization make the block ...

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Karver Systems
double block / roller bearing / lashing / max. rope ø 6 mm
double block
KBO1

Working load: 250 kg
Breaking load: 500 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows for impressive weight ...

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Karver Systems
triple block / roller bearing / lashing / max. rope ø 6 mm
triple block
KBO1

Working load: 350 kg
Breaking load: 700 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows for impressive weight ...

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Karver Systems
single block / plain bearing / lashing / max. rope ø 8 mm
single block
KBO2

Working load: 220 kg
Breaking load: 440 kg

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 WEIGHT The design and material optimization make the block ...

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Karver Systems
double block / roller bearing / lashing / max. rope ø 8 mm
double block
KBO2

Working load: 350 kg
Breaking load: 700 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows for impressive weight ...

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Karver Systems
single block / ball bearing / with fixed head / max. rope ø 12 mm
single block
3305

Working load: 1700 kg
Breaking load: 3400 kg

Harken wooden blocks combine the warm appeal of old-world craftsmanship with durable, low-friction, high-strength Harken ULC bearing systems. Block shells are crafted from hand-selected, classic maritime ...

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Harken
single block / ball bearing / with swivel / max. rope ø 12 mm
single block
3306

Working load: 1150 kg
Breaking load: 2300 kg

Harken wooden blocks combine the warm appeal of old-world craftsmanship with durable, low-friction, high-strength Harken ULC bearing systems. Block shells are crafted from hand-selected, classic maritime ...

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Harken
single block / ball bearing / with becket / max. rope ø 12 mm
single block
3307

Working load: 1700 kg
Breaking load: 3400 kg

Harken wooden blocks combine the warm appeal of old-world craftsmanship with durable, low-friction, high-strength Harken ULC bearing systems. Block shells are crafted from hand-selected, classic maritime ...

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Harken
double block / ball bearing / with shackle / max. rope ø 12 mm
double block
3308

Working load: 1700 kg
Breaking load: 3400 kg

Harken wooden blocks combine the warm appeal of old-world craftsmanship with durable, low-friction, high-strength Harken ULC bearing systems. Block shells are crafted from hand-selected, classic maritime ...

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Harken
single block / ball bearing / flat / max. rope ø 12 mm
single block
3309

Working load: 1700 kg
Breaking load: 3400 kg

Harken wooden blocks combine the warm appeal of old-world craftsmanship with durable, low-friction, high-strength Harken ULC bearing systems. Block shells are crafted from hand-selected, classic maritime ...

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Harken
single block / cheek / for sailboats / deck
single block
Bottom roof block

Working load: 1800 kg

Bottom roof block Rutgerson has developed two models of deck blocks, one is installed on top of the roof and the other is installed in the cockpit in order to lead the line over the deck, down into ...

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Rutgerson
single block / cheek / for sailboats / deck
single block
Top roof block

Working load: 1800 kg

Top roof block Rutgerson has developed two models of deck blocks, one is installed on top of the roof and the other is installed in the cockpit in order to lead the line over the deck, down into the ...

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Rutgerson
single block / plain bearing / with swivel / max. rope ø 8 mm
single block
BL = 850 KG

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
single block / plain bearing / with swivel / max. rope ø 12 mm
single block
BL = 1250 KG

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
single block / plain bearing / with swivel / max. rope ø 14 mm
single block
BL = 2100 KG

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
single block / swivel / with swivel / for sailboats
single block
GS314

Description: Swivel Block With Single Wheel Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

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GMTmarine
double block / swivel / with swivel / for sailboats
double block
GS315

Description: Swivel Block With Double Wheel Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

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GMTmarine
single block / swivel / with swivel / for sailboats
single block
GS3141

Description: Swivel Single Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

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GMTmarine
single block / swivel / with swivel / for sailboats
single block
GS3141NL

Description: Swivel Single Nylon Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

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GMTmarine
double block / swivel / with swivel / for sailboats
double block
GS3151

Description: Swivel Double Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

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GMTmarine
single block / plain bearing / for sailboats
single block
814608

single block / plain bearing / with swiveling toggle / for sailboats
single block
814609

double block / plain bearing / with fixed head / for sailboats
double block
814609

triple block / plain bearing / with fixed head / for sailboats
triple block
814609

double block / cheek / flat / with fork
double block
814619

single block / with swivel / with becket / max. rope ø 8 mm
single block
YC40S - BL = 1000 KG

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UBI MAIOR ITALIA
single block / with swivel / with becket / max. rope ø 8 mm
single block
YC40SA - BL = 1000 KG

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UBI MAIOR ITALIA
single block / ball bearing / with swivel / max. rope ø 10 mm
single block
YC50S - BL = 1500 KG

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UBI MAIOR ITALIA
single block / ball bearing / with becket / with swivel
single block
YC50SA - BL = 1500 KG

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UBI MAIOR ITALIA
double block / ball bearing / with swivel / max. rope ø 10 mm
double block
YC50D - BL = 1500 KG

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UBI MAIOR ITALIA
single block / roller bearing / with swivel / max. rope ø 6 mm
single block
HT 92510

Working load: 120 kg
Breaking load: 350 kg

... Material: Acetal resin 316 stainless steel straps Axle: 316 stainless steel Line size:2.5 - 6mm USAGE Control Lines Lead Blocks Vang Cascades Cunningham Systems Halyard Leads Rig Tension Systems - (Boat Breakers)

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Holt
single block / roller bearing / with swivel / with becket
single block
HT 92511

Working load: 150 kg
Breaking load: 350 kg

... Material: Acetal resin 316 stainless steel straps Axle: 316 stainless steel Line size:2.5 - 6mm USAGE Control Lines Lead Blocks Vang Cascades Cunningham Systems Halyard Leads Rig Tension Systems - (Boat Breakers)

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Holt
single block / plain bearing / lashing / max. rope ø 6 mm
single block
RF25109

Working load: 250 kg
Breaking load: 550 kg

Features Integrated stainless steel hub to accept lashing attachment and through-sheave becket Suits up to 4mm (5/32”) lashing Includes 750 mm (30") x 1.7mm (1/16") diam lashing

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Ronstan
single block / cam cleat / with swivel / with becket
single block
RF45130

Working load: 325 kg
Breaking load: 700 kg

Features Ultra Lightweight Low friction 2-stage Orbital ball bearing system Highest working load in its class Low profile and compact High performance cleating

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Ronstan
single block / flat / with becket / for sailboats
single block
WL/2

Compact stanchion lead system Compact furling line guide system Reduces line friction during furling Fairlead model WL/1 straightline guide for intermediate stanchions Sheave model WL/2 for line entry and exit stanchions ...

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Spinlock
cheek block / cam cleat / with fork / max. rope ø 10 mm
cheek block
BRS/50

This jammer block is for situations where a fixed foot block cant help: peeling spinnakers, or changing a sheet winch Controlled spinnaker handling Attached with webbing strop, positioned on a toe rail ...

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Spinlock
single block / swivel / cam cleat / ball bearing
single block
Mini 34x6 series

Working load: 400, 600 kg

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 ...

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Antal
single block / plain bearing / with swivel / for sailboats
single block
50

Working load: 600 kg

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 coated aluminium frame in one piece. A complete range ...

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Antal
single block / ball bearing / with fixed head / max. rope ø 6 mm
single block
35320 600 55

... stainless steel sheaves 19 x 8,3 mm of high quality UV-resistant plastic very low weight extremly small and lightweight blocks of compact shape especially suitable for kicking strap, jigger or trimming lines many ...

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SPRENGER
single block / vertical / base plate / with swivel
single block
35065 850 55

Block with 1 sheave on swivelling groundplate. Your advantages: sliding bearing strongly loadable cheek parts stainless steel wobble riveting: avoids sharp burrs at the rivet head sheaves 25 x9,2 mm of high quakity UV-resistant ...

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SPRENGER
single block / plain bearing / with becket / with Dyneema® ring
single block

Working load: 600 kg - 6000 kg

Simply unscrew the blocks at all the Velcro Dyneema® ryeTec®the loop depends on the loop of the block, screw on Velcro back, done. Unscrew the case of double blocks also the velcro ...

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HEROT Mastbau & Segelmacherei
single block / plain bearing / lashing / for sailboats
single block

Working load: 1000 kg - 14500 kg

Tye Tec® Loop-products offer the use of modern, high-strength fibre attached fittings. For the use on yachts, requiring lightweight and strong hardware.

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HEROT Mastbau & Segelmacherei
single block / plain bearing / with swivel / for classic sailboats
single block
SHORT EYE

BLOCK INTERNAL BINDING WITH SHORT EYE SWIVEL One version: * Bindings: aluminium-bronze with Sheave: aluminium-bronze Wood: elm or teak Construction: screwed and glued Finishing treatment: ...

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Blockmakers Ording
single block / plain bearing / with fork / for classic sailboats
single block

BLOCK INTERNAL BINDING WITH FORK Two versions: * Bindings: aluminium-bronze with Sheave: aluminium-bronze * Bindings: stainless steel 316 with Sheave: delrin Wood: elm or teak Construction: ...

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Blockmakers Ording
single block / plain bearing / with swivel / for professional fishing boats
single block
LP-BLOCK - Series

Working load: 453 kg - 1360 kg

... High Tech Block SKU:LP-BLOCK-4HT Lindgren-Pitman, Inc., world leader in the design and manufacturing of longline fishing equipment, has introduced a new and improved version of industry standard four ...

single block / plain bearing / lashing / for sailboats
single block

Equiplite™ Floating Blocks are similar in design to Equiplite™ spinnaker blocks but employ fixed sides with quick attach loops. They employ wide acetyl or alloy sheaves to pass two sheets for peeling under load.

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Equiplite Europe
single block / roller bearing / with becket / for sailboats
single block
TRRBB

Equiplite™ Runner Becket Blocks for High Performance yachts and especially designed for Super Yachts with a certificated Quick loop. We use DSK75 ULTRA quick loops to take the loads directly through the centre of the sheave..

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Equiplite Europe
single block / plain bearing / lashing / max. rope ø 10 mm
single block
IB 2.4 - SWL = 0.8 T

Working load: 800 kg
Breaking load: 2400 kg

Ino-Rope’s textile block is a real revolution: lighter, more efficient and safer than traditional blocks, it provides unequalled/unrivalled efficiency to open sea racers and demanding sailors. Working load: 800kg.

single block / plain bearing / lashing / max. rope ø 10 mm
single block
IB 3.6 - SWL = 1.2 T

Working load: 1200 kg
Breaking load: 3600 kg

... IB 3.6! Presented this year at the METS 2014s Dame Award, already adopted by famous Open Sea sailors in France, this new block concept is about to revolutionize the sailing industry and the pulley world!

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.