Single blocks

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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
401-001-02

Working load: 100 kg
Breaking load: 200 kg
Weight: 10 g

SINGLE BRASS 401-001-02 Purchase: 2 Comment :

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Seldén Mast AB
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
HT925 series

Working load: 120 kg - 300 kg
Breaking load: 350, 550, 600, 400 kg
Weight: 24, 28, 26, 32, 12 g

... 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
single block
HT9207 series

Working load: 190, 240, 80 kg
Breaking load: 600, 200, 400, 500 kg
Weight: 107, 118, 187, 224, 124 g

SWIVEL HEAD Slot Shackle head COMPOSITE CHEEKS Advanced carbon composite cheeks, great strength without the expense of weight ALUMINIUM SHEAVE Hard anodised CNC’d sheave for ultimate grip & wear resistance SHEAVE ACTIVATED ...

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Holt
single block
single block
HT952 series

Working load: 200 kg - 1,200 kg
Breaking load: 1,000, 400, 500, 300 kg
Weight: 123, 136, 266, 279, 178 g

SWIVEL-STOP An anti swivel head moulding is supplied with the block giving the option to have it ‑ fixed head or swivel COMPOSITE BODY High tensile carbon composite body. Strong and lightweight PLAIN BEARING SYSTEM Locking ...

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Holt
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
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
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
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
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
376

Working load: 113 kg
Breaking load: 544 kg

The 16 mm is Harken’s 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
single block
single block
N02090

Weight: 662, 254, 189, 218, 174 g

A strong, lightweight range of blocks for use on dinghies and dayboats or as lead blocks on larger craft. A comprehensive range of multiple sheave options, together with fiddles and cam cleat blocks, ...

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Barton Marine
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
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
3526550200

Versatile cheek block for 12 mm rope with easy running stainless steel ball bearing. Further advantages at a glance: side parts and pulley made of UV-resistant, glass-fibre reinforced plastic no sharp ridges ...

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SPRENGER
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
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
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
PB

Working load: 1.6, 700 t

Daruma Block type PB,Single Sheave (with Bearing) V sheave type PAT. Equipped with sheaves of V-shape that has been developed for using wire ropes. We have also U-type, 100mm diameter. *Material: ...

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ASANO GLOBAL CO. LTD.
single block
single block
AK1854

Working load: 2.5, 3 t

Heavy Duty Block Type-PB -Single Sheave The tough "Heavyduty Block" is reborn to be tougher. -Strength is improved by using a double arm for the top and a rib structure for the ...

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ASANO GLOBAL CO. LTD.
single block
single block
PO

Breaking load: 400, 500, 700 kg

The Nodus opening pulley stands out for its high strength and extreme lightness. For an extremely compact size, they offer an exceptional workload. The T® shackle is a textile shackle specially designed for transfer pulleys. + USE - ...

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NODUS FACTORY
single block
single block
20

Working load: 700, 400, 500 kg

... directly from the sheaves to the attachment point, allowing for lightweight side plates. The link blocks share the same performance bearing system as the dynamic blocks. + DESCRIPTION The Nodus ...

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NODUS FACTORY
single block
single block
Poulie Sc Nub®

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

The Sc® Nub boom block is a "tie" strap mounted with a Nodus-Nub friction block. It allows to fix the mainsheet clew to the boom with a loop or textile shackle but also to realize a 2:1 hoist. - ...

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NODUS FACTORY
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
YC50M

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

sheave: 50mm shackle: 6mm max Ø line: 10mm bl: 1500Kg mwl: 750g lenght: 98mm weight: 105g Description: stand-up/aluminum/delrin/ball bearing/shackle

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UBI MAIOR ITALIA
single block
single block
L-LB series

Working load: 1,500, 3,000, 2,000, 5,000 kg
Breaking load: 3,000, 6,000, 10,000 kg

LOOP® BLOCKS KOHLHOFF LOOP® Blocks are compact and lightweight multi-purpose snatch blocks fastened with a loop. The short standard loop minimizes damage to the deck, hull or superstructure. ...

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
7084002

Center diameter: 44 mm
Weight: 100 g

For roping: up to 12mm Roll: Aluminum Roller 44×12mm with slide bearing Housing: 107×47×33mm Weight: 100g 2 screws Ø 4mm Hole clearance: 88mm Colour: black

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Pfeiffer Marine GmbH
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
8369 series

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

single block
single block
19.76

Working load: 250 kg
Breaking load: 530 kg

"19" Single Block with Integral Swivel SKU: 19.76 Single Ball Race Block with swivel Breaking Load:530kg Safe work load:250kg Category: 19mm blocks

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Sea Sure
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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.