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high-resistance block / roller bearing / single / lashing
high-resistance block
KB14

Working load: 2,000 kg
Breaking load: 4,000 kg

The KB blocks feature roller bearing. For high load requirements, we recommend using our KBC range (featuring a self lubricated plain bearing).

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Karver Systems
high-resistance block / roller bearing / single / lashing
high-resistance block
KB16

Working load: 3,500 kg
Breaking load: 7,000 kg

The KB blocks feature roller bearing. For high load requirements, we recommend using our KBC range (featuring a self lubricated plain bearing).

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Karver Systems
plain bearing block / single / lashing / max. rope ø 16 mm
plain bearing block
KBO20

Working load: 2,600 kg
Breaking load: 5,200 kg

The KBO blocks are our mainstream range of lashing block. For the greater load requirements (KBO10 to KBO50), the blocks feature aluminum side plates. These blocks are ...

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Karver Systems
cheek block / flat / single / for sailboats
cheek block
KBO20FB LARGE

Working load: 2,600 kg
Breaking load: 5,200 kg

The KBO FB blocks are our foot blocks. Karver block technology screwed into the deck.

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Karver Systems
high-resistance block / single / max. rope ø 12 mm / for sailboats
high-resistance block
KBRC30

Working load: 3,000 kg
Breaking load: 6,000 kg

The KBRC blocks are our carbon side plates blocks from the KBR range dedicated to racing and Super Yachts. Low friction high load blocks.

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Karver Systems
snatch block / friction / mast foot / single
snatch block
21104

Working load: 800 kg
Breaking load: 2,000 kg

... soft block - for max rope size 10 mm Wichard is proud to present the MXLEvo: a soft block solution designed for all yachtsmen, whether amateur or pro. Designed for heavy load applications (mast foot, ...

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Wichard
snatch block / friction / single / lashing
snatch block
21105

Working load: 1,600 kg
Breaking load: 3,800 kg

... soft block - for max rope size 12 mm Wichard is proud to present the MXLEvo: a soft block solution designed for all yachtsmen, whether amateur or pro. Designed for heavy load applications (mast foot, ...

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Wichard
snatch block / friction / single / lashing
snatch block
21106

Working load: 2,500 kg
Breaking load: 5,000 kg

... mast foot block, halyard tackle, barber hauler, block and tackle, sheet return, large sail foot, etc.). Lightweight, robust and highly compact: MXLEvo provides exceptional resistance for its weight. ...

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

Working load: 140 kg
Breaking load: 700 kg

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

Working load: 140 kg
Breaking load: 700 kg

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
plain bearing block / cheek / single / with swivel
plain bearing block
HTX

Working load: 2,000, 800, 1,100, 3,500 kg

... Lewmar HTX Hardware Range. Drawing upon the design of the Racing Range, the HTX blocks are constructed simply from high quality materials, providing enhanced reliability. HTX blocks are ideal for frequently ...

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Lewmar
fiddle block / ratchet / ball bearing / single
fiddle block
Racing

Working load: 800 kg - 15,000 kg

Product Description 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 ...

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Lewmar
plain bearing block / mast foot / single / with swivel
plain bearing block
Synchro

Working load: 800, 2,000, 1,100, 450 kg

... swivel locking mechanism Applications Plain bearing blocks are typically used for heavy and static loads in: Halyard tuning Mainsheet systems Mast foot blocks Mast head blocks ...

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Lewmar
ball bearing block / single / with swivel / with shackle
ball bearing block
Control

Working load: 240, 200 kg

deal for use with hand-held loads, Lewmars Control Blocks feature lightweight, performance load-bearing capacity. MRT (Metal Replacement Technology) and a stainless steel central race and balls provide a weight advantage, ...

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Lewmar
ball bearing block / single / with fixed head / max. rope ø 10 mm
ball bearing block
Control

Working load: 240, 200 kg

Ideal for use with hand-held loads, Lewmar’s Control Blocks feature lightweight, performance load-bearing capacity. MRT (Metal Replacement Technology) and a stainless steel central race and balls provide a weight advantage, ...

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Lewmar
plain bearing block / single / with fixed head / max. rope ø 6 mm
plain bearing 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
plain bearing block / single / with fixed head / max. rope ø 6 mm
plain bearing 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
plain bearing block / single / with fixed head / max. rope ø 6 mm
plain bearing 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
plain bearing block / single / with swivel / max. rope ø 12 mm
plain bearing block
PBB 50

Working load: 700 kg
Breaking load: 1,400 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
plain bearing block / single / with becket / with swivel
plain bearing block
PBB 50

Working load: 700 kg
Breaking load: 1,400 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
plain bearing block / single / with swivel / for sailboats
plain bearing block
NEX 2.5 / 5.0

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 ...

plain bearing block / single / with toggle / max. rope ø 16 mm
plain bearing block
B300X01BFXX series

Working load: 850, 380, 700, 1,430 kg

... Toggle-head blocks have the same design with a spherical plain bearing and high-tech composite material as the standard blocks but with a fixed toggle-head and clevis pin instead of a shackle. These blocks ...

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Rutgerson
plain bearing block / single / with shackle / max. rope ø 14 mm
plain bearing block
B300X03B series

Working load: 1,150, 450, 700 kg
Breaking load: 2,100, 850, 1,250 kg

Single block with Cam. Spherical plain bearing, composite sides and sheave

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Rutgerson
plain bearing block / single / lashing / max. rope ø 16 mm
plain bearing block
B300X05B series

Working load: 450, 2,000, 700, 1,150 kg
Breaking load: 2,100, 3,600, 1,250, 850 kg

Single block with Strap Head. Spherical plain bearing, composite sides and sheave

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Rutgerson
plain bearing block / single / with snap shackle / max. rope ø 16 mm
plain bearing block
B300X01BS series

Working load: 300, 750, 500, 1,500 kg
Breaking load: 900, 2,700, 1,700, 550 kg

Single block with Snap Shackle. Spherical plain bearing, composite sides and sheave

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Rutgerson
plain bearing block / single / with becket / with swivel snap shackle
plain bearing block
B300X02BS series

Working load: 1,500, 500, 750 kg
Breaking load: 900, 2,700, 1,700 kg

Single block with Becket and Snap Shackle. Spherical plain bearing, composite sides and sheave

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Rutgerson
roller bearing block / with fixed head / for classic sailboats / wooden
roller bearing block

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 type ...

ball bearing block / double / with swivel / max. rope ø 8 mm
ball bearing block
YC40D

Working load: 500 kg
Breaking load: 1,000 kg

sheave: 40mmshackle: 5mmmax Ø line: 8mmbl: 1000Kgmwl: 500glenght: 72mmweight: 100gDescription: double/aluminum/delrin/ball bearing/shackle

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UBI MAIOR ITALIA
ball bearing block / single / with hasp/spring / max. rope ø 8 mm
ball bearing block
YC40M

Working load: 500 kg
Breaking load: 1,000 kg

sheave: 40mmshackle: 5mmmax Ø line: 8mmbl: 1000Kgmwl: 500glenght: 78mmweight: 60gDescription: stand-up/aluminum/delrin/ball bearing/shackle

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UBI MAIOR ITALIA
ball bearing block / double / with shackle / max. rope ø 10 mm
ball bearing block
YC50DA

Working load: 750 kg
Breaking load: 1,500 kg

sheave: 50mm shackle: 6mm max Ø line: 10mm bl: 1500Kg mwl: 750g lenght: 118mm weight: 192g Description: double/becket/aluminum/delrin/ball bearing/shackle

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UBI MAIOR ITALIA
roller bearing block / single / with fixed head / max. rope ø 12 mm
roller bearing block
RTSh60SL

Working load: 1,400 kg
Breaking load: 2,800 kg

sheave: 60mmmax Ø line: 12mbl: 2800Kgmwl: 1400glenght: 100mmload: Lweight: 160gDescription: single/aluminum/delrin/roller bearing/soft attachment/low load

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UBI MAIOR ITALIA
roller bearing block / single / with shackle / max. rope ø 12 mm
roller bearing block
RT60SAL

Working load: 1,400 kg
Breaking load: 2,800 kg

sheave: 60mm shackle: 8mm max Ø line: 12mm bl: 2800Kg mwl: 1400g lenght: 135mm load: L weight: 210g Description: single/becket/aluminum/delrin/roller bearing/shackle/low load

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UBI MAIOR ITALIA
single block / with swivel / for sailboats
single block
8369

Working load: 300, 500 kg

double block / with swivel / for sailboats
double block
8390

Working load: 500, 300 kg

ball bearing block / single / max. rope ø 16 mm / for sailboats
ball bearing block
801

Working load: 3,100 kg
Breaking load: 6,200 kg

The 6082 T6 aluminum body, the torlon ball bearing system and the AISI316 CrNi stainless steel parts are designed for very high loads

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Admiral Marine Equipment
ball bearing block / single / with becket / max. rope ø 16 mm
ball bearing block
802

Working load: 3,100 kg
Breaking load: 6,200 kg

The 6082 T6 aluminum body, the torlon ball bearing system and the AISI316 CrNi stainless steel parts are designed for very high loads

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Admiral Marine Equipment
ball bearing block / single / max. rope ø 16 mm / for sailboats
ball bearing block

Working load: 3,100 kg
Breaking load: 6,200 kg

The 6082 T6 aluminum body, the torlon ball bearing system and the AISI316 CrNi stainless steel parts are designed for very high loads

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Admiral Marine Equipment
fiddle block / ball bearing / single / with becket
fiddle block
804

Working load: 3,100 kg
Breaking load: 6,200 kg

The 6082 T6 aluminum body, the torlon ball bearing system and the AISI316 CrNi stainless steel parts are designed for very high loads

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Admiral Marine Equipment
ball bearing block / single / max. rope ø 16 mm / for sailboats
ball bearing block
805

Working load: 3,100 kg
Breaking load: 6,200 kg

The 6082 T6 aluminum body, the torlon ball bearing system and the AISI316 CrNi stainless steel parts are designed for very high loads

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Admiral Marine Equipment
ball bearing block / single / with swivel / for sailboats
ball bearing block

swivel block / single / with swivel / for sailboats
swivel 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
swivel block / double / with swivel / for sailboats
swivel 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
swivel block / single / with swivel / for sailboats
swivel 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
swivel block / single / with swivel / for sailboats
swivel 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
swivel block / double / with swivel / for sailboats
swivel 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
snatch block / single / lashing / max. rope ø 14 mm
snatch block
LS046

Working load: 2,200 kg

Description Snatch looper, sheave Ø 46, SWL 2200 kg, with snap loop

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Antal
snatch block / single / lashing / max. rope ø 16 mm
snatch block
LS054

Working load: 3,500 kg

Description Snatch looper, sheave Ø 54, SWL 3500 kg, with snap loop

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Antal
ball bearing block / single / with shackle / max. rope ø 18 mm
ball bearing block
RF104100

Working load: 3,250 kg
Breaking load: 7,500 kg

FEATURES High dynamic and static load capacity High load bearing system Ball bearings to counteract side thrust loads Class leading performance and sleek, contemporary styling Durable aluminium alloy cheek plates Central hub hole can ...

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Ronstan
ball bearing block / single / with fixed head / max. rope ø 12 mm
ball bearing block
RF104108A

Working load: 3,250 kg
Breaking load: 7,500 kg

... pointAlso available in Series 45, 60 & 7522mm (7/8") inside cheeks at headMount with 2 x 12mm (7/16") fasteners (not supplied)Full block rated load can only be achieved with uniformly distributed load across full length ...

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Ronstan
plain bearing block / cam cleat / cheek / single
plain bearing block
BRS/50

Working load: 160 kg

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
plain bearing block / cam cleat / cheek / single
plain bearing block
BRS/63

Working load: 240 kg

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
ball bearing block / single / with fixed head / max. rope ø 5 mm
ball bearing block
376

Working load: 113 kg
Breaking load: 544 kg

The 16 mm is Harkens® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 ...

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Harken
ball bearing block / single / hook / with swivel
ball bearing block
391

Working load: 113 kg
Breaking load: 181 kg

The 16 mm is Harkens® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 ...

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Harken
roller bearing block / single / with swivel / max. rope ø 6 mm
roller bearing 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
roller bearing block / single / with swivel / with becket
roller bearing 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
roller bearing block / single / with fixed head / max. rope ø 6 mm
roller bearing block
3525800555

Working load: 250 kg
Breaking load: 1,000 kg

Sheave: 50 x 8 mm Your advantages: • strongly loadable sliding bearing • wobble riveting: avoids sharp burrs at the rivet head • cheek parts and cage of stainless steel • sheaves brass nickeled, especially suitable for wire and Dyneema • ...

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SPRENGER
vertical block / single / with swivel / base plate
vertical block
3506585055

Working load: 175 kg
Breaking load: 700 kg

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
ratchet block / single / with swivel / max. rope ø 12 mm
ratchet block
M66-08

Working load: 340 kg

New Schaefer M66-08 Single Ratchet Block. Injection molded long grain fiber body features an anodized aluminum sheave for a light yet strong block. Delrin(tm) ball bearings ensure smooth operation. Machined ...

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Schaefer
plain bearing block / single / with fixed head / max. rope ø 6 mm
plain bearing block
01-02

Working load: 340 kg

Sheave Dia. Thickness 3/4" (19mm), Thickness 15/32" (12mm), Width7/8" (22mm), Length 1 13/32" (35mm), SWL 750 lbs (340kg), Weight 1 oz. (28g) Max Line 1/4" (6mm)

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Schaefer
friction block / single / lashing / for sailboats
friction block
U4

Working load: 4,000 kg
Breaking load: 8,000 kg

Light weight low friction block. Best for sheetlines, runners or mast based halyard blocks for the boats more than 40ft SWL: 4000kg MBL: 8000kg RTM Carbon Frame Dyneema teflon covered loop

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Ropeye Llc
friction block / single / lashing / for sailboats
friction block
U3

Working load: 1,000 kg
Breaking load: 2,000 kg

Light weight low friction block. Best for sheetlines, runners or mast based halyard blocks. SWL: 2500kg MBL: 5000kg RTM Carbon Frame Dyneema teflon covered loop

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Ropeye Llc

How to choose this product

sailboat-block

A sailboat block consists of one or more sheaves held between two cheeks or chocks. It increases mechanical advantage and can be used to alter the direction of lines running through it.

Applications

These devices have multiple uses on board including mainsail block and tackle, spinnaker sheet guide, barber hauler, hell block, deck block and downhaul tackle, among others.

Technologies

The great majority of cruising sailboat blocks are aluminum or stainless steel. Titanium blocks now can be found on some racing boats, while traditional craft have beautiful wooden blocks. Single, double and even triple blocks are used in block and tackle to increase mechanical advantage, as on a mainsail sheet.

Blocks can be attached via a becket, a swivel, a rotating tower with a jam or cam cleat, a fork, a fabric strop or be screwed to the deck or attached to another fitting. Blocks with narrow metal sheaves are used with cable or wire rope. Sheaves can ride on ball bearings, rollers or a simple friction axle. Ratchet blocks have internal teeth so that the sheave turns in one direction only, making it easier to keep tension on the line.

How to choose

Choice will depend on specific application, line diameter and the possible need for an integrated cleat. Blocks with rollers are generally the most efficient due to reduced friction and increased sturdiness.