High-resistance blocks

13 companies | 64 products
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single block
single block
45120

Working load: 5,000 kg
Breaking load: 11,000 kg
Thickness: 49 mm

Single HR roller block - Sheave 160 - Cheek block - M16 Complete range of blocks for yachts and mega yachts High working and breaking loads Excellent high-speed ...

single block
single block
47120

Working load: 12,000 kg
Breaking load: 28,000 kg
Thickness: 65 mm

Single HR roller block - Sheave 240 - Cheek block - M20 Complete range of blocks for yachts and mega yachts High working and breaking loads Excellent high-speed ...

single block
single block
30050

Working load: 320 kg
Breaking load: 800 kg
Thickness: 12 mm

Stainless steel single block - Alu sheave 50 - For 5 mm wire Complete range of stainless steel blocks for dinghies Lightweight, reliable and good performance Available in a wide range of size and ...

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
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

<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
405-001-15

Working load: 650 kg
Breaking load: 1,300 kg

SPECIFICATIONS Weight: 80.00 g Breaking Load: 1300 kg Safe working Load: 650 kg System: BBB50 Max line size: 12 mm Mounting: 3xM5 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

SPECIFICATIONS Weight: 417.00 g Safe working Load: 2500 kg Breaking Load: 5000 kg Max line size: 14 mm Pin diam: 10 mm Shackle diam: 8 mm Purchase: 2 Mounting: 0 90 free

single block
single block
410-101-01

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

SPECIFICATIONS Weight: 750.00 g Size: 100 SWL: 4000 kg WidthB1: 15.50 WidthB2: 12.50 PinDiam: 16.00 PinDiam2: .00 MaxBackstayW: 10 mm MaxSheaveW: 8 mm

single block
single block
RF41151

Working load: 400 kg
Breaking load: 1,000 kg

SERIES 40 RF41151 FEATURES 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 ...

single block
single block
B319040B

Working load: 750, 600 kg
Breaking load: 1,500, 1,200 kg

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

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
MB 12W

Working load: 12,500 kg
Breaking load: 25,000 kg

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MORFRAC
single block
single block
MW 15W

Working load: 15,000 kg
Breaking load: 30,000 kg

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MORFRAC
single block
single block
AK

... 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

... light side plates. Description The Nodus pulley is higly resistant and extremely light. The pulleys are compact with a very high working load offering an easy and safe adjustment. Technical Data Pulley made up ...

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

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
55.247.01

Stainless steel sheave CODE 55.247.01 With plastic insert.

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.