Single blocks

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single block
single block
2190

Working load: 115 kg
Breaking load: 340 kg
Weight: 23 g

... and stop each other. The result is the most efficient small boat block Harken has ever made. Zircon blocks are available in 40- and 57-mm sheaves in single and double blocks, ...

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Harken
single block
single block
RBB series

Seldén has expanded their range of Roller Bearing Blocks with larger singles and single/stand-ups in series ø100 and a ø130 mm. “- Boatbuilders call for these blocks ...

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Seldén Mast AB
single block
single block
402-001-01

Working load: 70 kg
Breaking load: 140 kg
Weight: 7 g

SINGLE STRAP 402-001-01 Purchase: 2 Mounting: 90

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Seldén Mast AB
single block
single block
401-001-01

Working load: 70 kg
Breaking load: 140 kg

SINGLE COMPOSITE 401-001-01 Purchase: 2 Comment:

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Seldén Mast AB
single block
single block
KB6

Working load: 220 kg
Breaking load: 440 kg
Thickness: 17 mm

Grey KB6 round lashing block The KB is Karver’s iconic round block. It is one of the first products that we have designed and it is a concentrate of our DNA : Performance, Innovation and Design. It is ...

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Karver Systems
single block
single block
KB8

Working load: 600 kg
Breaking load: 1,200 kg
Thickness: 23 mm

KB6 round lashing block The KB is Karver’s iconic round block. It is one of the first products that we have designed and it is a concentrate of our DNA : Performance, Innovation and Design. It is timeless, ...

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Karver Systems
single block
single block
KB10

Working load: 1,000 kg
Breaking load: 2,000 kg
Thickness: 22 mm

Grey KB8 round lashing block The KB is Karver’s iconic round block. It is one of the first products that we have designed and it is a concentrate of our DNA : Performance, Innovation and Design. It is ...

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Karver Systems
single block
single block
RF25109

Working load: 250 kg
Breaking load: 550 kg
Weight: 9 g

... incredible Series 20 Orbit Block™ is capable of loads up to 250kg (550lb) while weighing a mere 9 grams. It’s so light that it needs to be lashed down! Series 20 BB Orbit Block™ Lashing Head User Instructions N.B. ...

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Ronstan
single block
single 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 ...

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Spinlock
single block
single block
HTX series

Working load: 800, 1,100, 2,000, 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
single block
single block
Racing

Working load: 800 kg - 15,000 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 Highly ...

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Lewmar
single block
single block
Synchro

Working load: 2,000, 450, 1,100, 800 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
single block
single block
HT2020

Working load: 125 kg
Breaking load: 750 kg
Weight: 11 g

... filled nylon with 316 stainless Steel straps Axle: - 316 stainless Steel Line size:2.5 - 6mm USAGER Control Lines Lead Blocks Vang Cascades Cunningham Systems Halyard Leads

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Holt
single block
single block
70113

Working load: 240 kg
Breaking load: 500 kg
Thickness: 14 mm

... removed for maintenance Applications For dinghies and catamarans applications: genoa sheets, boom vang, footmast block, masthead block… For larger yachts: barber-hauler, various, control lines… Materials ...

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Wichard
single block
single block
LL1060

Working load: 1,000 kg
Center diameter: 60 mm
Weight: 95 g

<p>Looper series, single block, sheave Ø 60, SWL 1000 kg</p> Looper is an ultralight one-piece-frame block provided with a dyneema Snap-Loop for fast, easy and safe connections. Characteristics: ...

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Antal
single block
single block
3565040200

Working load: 460 kg
Breaking load: 1,200 kg
Weight: 148 g

... removable becket Versatile 12 mm block with swivel. The sturdy stainless steel tab shows the type of bearing used and the maximum rope thickness at a glance - a practical feature of all articles in the S-block ...

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SPRENGER
single block
single block
3565045255

Working load: 460 kg
Breaking load: 1,200 kg
Weight: 159 g

... removable becket Versatile 12 mm block with u-shaped swivel. The sturdy stainless steel tab shows the type of bearing used and the maximum rope thickness at a glance - a practical feature of all articles in the ...

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SPRENGER
single block
single block
3506585055

Working load: 175 kg
Breaking load: 700 kg
Weight: 39 g

... fixing of bows and swivels by means of bolts and rings low weight and excellent price/performance ratio Plain bearing block for 6 mm rope with stainless steel side parts. Mounted on a base plate with a bolt, and ...

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SPRENGER
single block
single block
A2030

Working load: 140 kg
Breaking load: 750 kg

Allen 30mm Dynamic Blocks use the same high quality Dynamic bearing, materials and precision engineering as our 20mm Dynamic Block range. Our high strength and rope friendly stainless steel ultra-strap ...

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Allen Brothers
single block
single block
A1375

Working load: 200 kg
Breaking load: 700 kg

Allen Snatch Blocks feature the same Dynamic bearing technology as our 30 and 40mm Dynamic ranges. Our snatch blocks have an easy to use mechanism for opening and closing the cheeks making them the perfect ...

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Allen Brothers
single block
single block
A2020

Working load: 115 kg
Breaking load: 540 kg

... bearing blocks on the market. The range is available with different types of accessories including lacing eyes, hooks, swivels and cleats. The range also features a central rivet that provides great options as a tie on ...

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Allen Brothers
single block
single block
B300301B

Working load: 450 kg
Breaking load: 850, 3,600, 1,250 kg
Weight: 50 g

Single block with spherical plain bearing and composite sides and sheave

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Rutgerson
single block
single block
B300501B

Working load: 700 kg
Breaking load: 1,250 kg
Weight: 115 g

Single block with spherical plain bearing and composite sides and sheave

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Rutgerson
single block
single block
B300601B

Working load: 1,150 kg
Breaking load: 2,100 kg
Weight: 205 g

Single block with spherical plain bearing and composite sides and sheave

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Rutgerson
single block
single block
EX1327

Plain bearing block with nylon cheeks and acetal sheaves with EX1372 snap shackle. Lightweight, very strong and affordable. This mainsheet block is designed for Optimists and other small dinghies and ...

single block
single block
P-Tech & C-Tech hooks

Working load: 200 kg - 1,500 kg
Breaking load: 3,000, 2,500, 2,000, 800, 400 kg
Center diameter: 14, 10, 8, 6 mm

... etc) + DATA SHEET - Nodus Factory opening friction ring made of Self-lubricating technical plastic resin ¬ black - Block®, clamping and holding ring, made of technical PA, which can lock and quickly fix a textile ...

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NODUS FACTORY
single block
single block
BF-D®

Working load: 750 kg - 2,500 kg
Breaking load: 5,000, 1,800, 1,500 kg
Center diameter: 14, 10, 6 mm

BF®, Block-Friction® fiddle ring with FrD- duralumin friction ring has an exceptional weight to strength ratio (10 times lighter than a pulley), designed for high static loads. Block Friction® is used ...

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NODUS FACTORY
single block
single block
HK® single

Working load: 3,000 kg - 6,000 kg
Breaking load: 6,000, 12,000, 8,500 kg
Center diameter: 32, 22, 16 mm

... ratio - Mobile solution - Performance, lightness and reliability - Impervious thanks to the double security: Velcro® & Block Ring - Reliable and maintenance free

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NODUS FACTORY
single block
single block
81460922

Articulated pulley which will facilitate the tension of the sail attached to the adjustment ring

single block
single block
PB

Working load: 600, 1,000, 400 kg

The design of the sheave mounting prevents the rope from easily snagging. The bolt used at the swivel joint section is a size larger as compared with the former one and strengthened. *Materials: SCS14 (equivalent to SUS316), Swivel/Swivel ...

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ASANO GLOBAL CO. LTD.
single block
single block
AK10207

Working load: 1,000 kg
Weight: 3 kg

This block features a ball bearing for stabler sheave rotation compared to our existing snatch blocks that use bushing (AK Snatch Block Type Ⅲ-A). The hook type snatch enables smooth ...

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ASANO GLOBAL CO. LTD.
single block
single block
AK10202

Working load: 1,000 kg
Weight: 2,700 g

This block features a ball bearing for stabler sheave sheave rotation compared to our existing snatch blocks that use bushing (AK Snatch Block Type Ⅲ-A). The hook-type snatch enables ...

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ASANO GLOBAL CO. LTD.
single block
single block
GS3141 series

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

single block
single block

Marco supplies various models of purse and tow blocks for tuna vessels of all sizes. Their lightweight, compact design reduces wear in sheaves and lines. Characteristics - These blocks stand ...

single block
single block
YC40S

Working load: 500 kg
Breaking load: 1,000 kg
Weight: 60 g

Ø SHEAVE: 40mm SHACKLE: 5mm MAX Ø LINE: 8mm MAX WORKING LOAD: 500Kg BREAKING LOAD: 1000Kg LENGTH: 72mm WEIGHT: 60g

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UBI MAIOR ITALIA
single block
single block

Breaking load: 1,600 kg

Made entirely in anodised light alloy and AISI 316 stainless steel with delrin sheave. Suitable for genoa and spinnaker sheets. Code 198.332 For lines: Ø max 12 mm Black sheave length: 96 mm Breaking load: 1600 Kg, fixed by means ...

single block
single block
106886

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

The sheave assemblies are made out of anodized aluminium. Sheaves are fitted with a ball bearing system.

single block
single block
LB 2-to-1

Working load: 2, 3, 4, 7 t

The LB 2-to-1 snatch blocks are fitted with polymer bearing replaces the SB models (needle bearing). Facnor has designed this new stripped-down version made in aluminum for lighter, more simple and more attractive halyard ...

single block
single block
7385M

Center diameter: 25 mm

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NENUPHAR
single block
single block
31330

Working load: 200 kg
Breaking load: 420 kg
Weight: 45 g

Ball bearing sheave diam: 40 mm Max. rope diam. : 10 mm Breaking load: 420 kg

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NENUPHAR
single block
single block
7392

Center diameter: 20, 25, 28, 30 mm

Stanchion block.For stanchion diam. 20 mm to 25 mm Ball bearing sheave diam. 30 mm

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NENUPHAR
single block
single block
8369 series

Breaking load: 1,940, 1,240, 1,360 kg

single block
single block
881BR-6AL

Upright Conduit Idlers allow you to turn steering cable around a sheave rather than through the conduit, reducing wear and friction. Upright Conduit Idlers are an absolute must on boats over 39’ (12m). (Sold without Pull/Pull Conduit ...

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Edson Marine
single block
single block
711AL-4AL

Edson’s Adjustable Idler - designed for boats having the quadrant on the forward side of the rudderpost, and the pedestal either forward or aft of the rudderpost. They can be used for Radial Drive Steering Systems when the pedestal is ...

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Edson Marine
single block
single block
622ST-10ALNB

Edson’s Articu-Lock Sheaves – Ideal for performance sailboats, cruising/racing catamarans and high-tech cruising yachts above 27 feet. Edson engineers have designed this new sheave to be lightweight, strong and extremely easy to align ...

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Edson Marine
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How to choose this product
single-block

A single block has only one sheave. Models differ in size, sturdiness, attachment and bearing systems.

Applications

Such blocks can be used in two-line block and tackle, as an intermediary pulley in multi-block tackle or as a line lead block.

Technologies

Each of the many different attachment systems is appropriate for a particular type of block. There are two main bearing configurations. In blocks with mechanical or plastic ball bearings, two sets of bearings support the load in races on either side of the sheave.

Roller bearings sit in pairs between the races within the sheave. While sometimes found in small blocks, they are more often used in large-diameter models, as they can support higher loads and wear more slowly.

How to choose

Line diameter and working load will be the main choice criteria. Manufacturers include detailed technical information in their catalogs.