High-resistance blocks

13 companies | 64 products
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single block
single block
405-001-15

Working load: 650 kg
Breaking load: 1,300 kg
Weight: 24 g

Comment: Screw Length= 1x MFT M5, L=25. 2x MRT M5, L=13,5

single block
single block
408-201-01

Working load: 2,500 kg
Breaking load: 5,000 kg
Weight: 506 g

ROLLER BEARING BLOCK Purchase: 2 Pin diam: 10 mm

single block
single block
410-101-01

Working load: 4,000 kg
Breaking load: 8,000 kg
Weight: 750 g

HIGH LOAD PLAIN BEARING PinDiam2: .00 MaxBackstayW: 10 mm MaxSheaveW: 8 mm

single block
single block
RF41151

Working load: 400 kg
Breaking load: 1,000 kg
Weight: 66 g

Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave Mount with 3 x 5mm (3/16") fasteners (not supplied) All purpose (AP) blocks are a great all around solution. ...

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

... in the 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 ...

single block
single block
304

Working load: 680 kg
Breaking load: 1,361 kg

Lightweight, low-friction wire blocks carry wire halyards and high-strength control lines on boats of all sizes.

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Harken
single block
single block
B319040B

Working load: 750, 600 kg
Breaking load: 1,500, 1,200 kg
Weight: 126, 192 g

Foot block with reinforced composite sides, spherical plain bearing and a jammer solution in aluminium. These foot blocks are stackable.

single block
single block
A2020HL

Working load: 250 kg
Breaking load: 540 kg

Allen 20mm Dynamic Blocks feature the patented Allen Dynamic bearing system which provides an unrivalled weight to performance ratio. This is coupled with our high strength and rope friendly stainless ...

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Allen Brothers
single block
single block
PB-S

... integral structure. In addition, the material is the special stainless steel with high corrosion resistance often used for industrial parts such as seawater pumps. (excluding machined nylon sheaves.) Since ...

single block
single block
AK1783

*Materials: Special Stainless steel,Sheave pin/Swivel/Swivel pin/arm pin: SUS304,Grease nipple: brass *Working load limit does not apply to the becket. *The working load corresponds to the working load of the bearings. *This product ...

single block
single block
20

Working load: 700, 400, 500 kg

... attachment point, allowing for lightweight side plates. The link blocks share the same performance bearing system as the dynamic blocks. + DESCRIPTION The Nodus pulley stands out for its high ...

single block
single block
Poulie Sc Nub®

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

... black - Resistance certified by Veritas + ADVANTAGES - Spherical friction pulley for high load BL 4700 Kg - Easy and quick to install, lashing directly to the boom in Dyneema®. - Reliable ...

single block
single block
Poulie de chandelier

Nodus Factory stanchion pulley: with friction and textile fixing system. It allows to reduce the friction of the reel end. Its unique system with its textile loop and friction ring allows an automatic alignment. Also available as an ...

single block
single block

Working load: 5 kg - 12,000 kg
Breaking load: 17,000 kg

TURKEY THE FIRST CARBON POLE Bodrum İçmeler prop shipyard since 2004 in manufacturing aluminum pole today, deck and rigging hardware service providers Velenamast, Turkey' s produced has signed the first carbon mast. Velenamast has produced ...

single block
single block
MB 5W

Working load: 5,000 kg
Breaking load: 1,000 kg

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MORFRAC
single block
single block
55.247.01

Stainless steel sheave CODE 55.247.01 With plastic insert.

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How to choose this product
high-resistance-block

A high-load block is designed to withstand significant working loads. It is used to multiply mechanical advantage or to reduce friction when the run of a line includes a sharp angle.

Applications

As with other blocks, the various versions of these fittings include snatch blocks, becket blocks to create a block and tackle, swivel blocks and those attached by shackles and snap shackles. They are used wherever loads are significant and reliability requirements exceptional. Such blocks serve as deck-mounted halyard or sheet leads, as part of sheet tackle and in other situations.

Technologies

Cable blocks generally have stainless steel sheaves and cheeks. In contrast, those for rope line are often of aluminum, since they are subject to less abrasion and sheer strain.

Roller bearing blocks are the most efficient. The reduced contact between the axle and the sheave minimizes friction, as would ball bearings, but the additional width of the rollers distributes the load over a greater surface, making the block stronger than ball bearing or friction models. Some particularly high-tech versions are made of titanium, extremely light, but very expensive. They are generally only used by top-level competitive sailors.

How to choose

Choice will depend on the block's precise function, the way it will be fastened and the loads it will have to bear.