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

Working load: 2000 kg
Breaking load: 4000 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: 3500 kg
Breaking load: 7000 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 / single / max. rope ø 12 mm / for sailboats
high-resistance block
KBRC30

Working load: 3000 kg
Breaking load: 6000 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
high-resistance block / single / lashing / max. rope ø 14 mm
high-resistance block
KBRC50

Working load: 5000 kg
Breaking load: 10000 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
high-resistance block / single / lashing / max. rope ø 16 mm
high-resistance block
KBRC65

Working load: 6500 kg
Breaking load: 13000 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
cheek block / flat / high-resistance / single
cheek block
45120

Working load: 5000 kg
Breaking load: 11000 kg

Commentary Complete range of blocks for yachts and mega yachts High working and breaking loads Excellent high-speed low load and high-function load characteristics ...

cheek block / flat / high-resistance / single
cheek block
47120

Working load: 12000 kg
Breaking load: 28000 kg

Commentary Complete range of blocks for yachts and mega yachts High working and breaking loads Excellent high-speed low load and high-function load characteristics ...

high-resistance block / single / with fixed head / max. wire rope ø 5 mm
high-resistance block
30050

Working load: 320 kg
Breaking load: 800 kg

Commentary Complete range of stainless steel blocks for dinghies Lightweight, reliable and good performance Available in a wide range of size and fastening systems Applications Wire halayards, vangs, various control ...

high-resistance block / flat / cheek / plain bearing
high-resistance block
PBB 50

Working load: 700 kg
Breaking load: 1400 kg

Specifications Weight: 80.00 g Breaking load: 1400 kg Safe working load: 700 kg System: BBB50 Max line size: 12 mm Mounting: 3xM5

high-resistance block / single / with swivel / max. rope ø 14 mm
high-resistance block
RBB 80

Working load: 2500 kg
Breaking load: 5000 kg

... working load: 2500 kg Breaking load: 5000 kg Max line size: 14 mm Pin diam: 10 mm Shackle diam: 8 mm System: RBB80 Block type: single

high-resistance block / single / lashing / max. rope ø 10 mm
high-resistance block
PBB100

Working load: 4000 kg
Breaking load: 8000 kg

Specifications Weight: 812.00 g Safe working load: 4000 kg Breaking load: 8000 kg Max line size: 10 mm System: PBB100 Block type: single

plain bearing block / high-resistance / single / lashing
plain bearing block
HTX

Working load: 800, 2000, 3500, 1100 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 ...

mast foot block / high-resistance / plain bearing / single
mast foot block
B319040B / B319060B

Working load: 750, 600 kg
Breaking load: 1200, 1500 kg

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

high-resistance block / plain bearing / single / with fixed head
high-resistance block
304

Working load: 680 kg
Breaking load: 1361 kg

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

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Harken
high-resistance block / single / lashing / max. rope ø 12 mm
high-resistance block
3214

Working load: 1134 kg
Breaking load: 2268 kg

... engineering remains exactly the same. These strong, lightweight blocks feature free-rolling high-load Torlon® roller bearings for a high strength-to weight ratio. The 3214 soft attachment ...

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Harken
cam cleat block / cheek / flat / high-resistance
cam cleat block
HT 92863

Working load: 1200 kg
Breaking load: 3000 kg

SWIVEL-STOP An anti swivel head lcoking screwx - fixed head or swivel ALUMINIUM BODY High tensile teflon coated hard anodised aluminium body. Strong and lightweight ROLLER BEARING SYSTEM CNC machined roller / ball bearing ...

cheek block / flat / high-resistance / single
cheek block
HT 92812

Working load: 1200 kg
Breaking load: 3000 kg

SWIVEL-STOP An anti swivel head lcoking screwx - fixed head or swivel ALUMINIUM BODY High tensile teflon coated hard anodised aluminium body. Strong and lightweight ROLLER BEARING SYSTEM CNC machined roller / ball bearing ...

high-resistance block / single / max. rope ø 6 mm / for sailboats
high-resistance block
RF20101

Working load: 250 kg
Breaking load: 550 kg

Features Low friction High static and dynamic load capacity Lightweight

cheek block / flat / high-resistance / single
cheek block
RF4115

Working load: 400 kg
Breaking load: 1000 kg

Features Exceptionally high working loads Low maintenance, long service life Self-lubricating sheave Mount with 3 x 5mm (3/16") fasteners (not supplied)

high-resistance block / single / lashing / max. rope ø 10 mm
high-resistance block
LL1060

Working load: 1000 kg

TECHNICAL CHARACTERISTICS ATTRIBUTE VALUE Ø sheave (D) 60 mm Side bearing Delrin balls Radial bearing composite fibre Weight 95 gr Ø max line 10 mm SWL 1000 kg Material Aluminum Sheave material Plastic

high-resistance block / single / with Dyneema® ring / max. rope ø 12 mm
high-resistance block
DBS56

Working load: 1000 kg

TECHNICAL CHARACTERISTICS ATTRIBUTE VALUE Ø sheave (D) 56 mm Side bearing Delrin balls Radial bearing composite fibre Weight 170 gr Ø max line 12 mm SWL 1000 kg Material Plastic Sheave material Plastic Dyneema loop Mod. DBS05

high-resistance block / single / with fork / for sailboats
high-resistance block
A2020HL

Breaking load: 540 kg

... details of their design, the quality of the materials and construction to fully appreciate the difference. From the patented high strength .316 stainless steel line friendly ultra strap, to the soft contours of the sheave ...

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Allen Brothers
high-resistance block / single / with fork / max. rope ø 10 mm
high-resistance block

Breaking load: 1000 kg

... details of their design, the quality of the materials and construction to fully appreciate the difference. From the patented high strength .316 stainless steel line friendly ultra strap, to the soft contours of the sheave ...

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Allen Brothers
cheek block / flat / high-resistance / single
cheek block
BB-2209F

Working load: 390 kg

22mm blocks are specially designed for sailboards, dinghies, and control lines of all different configurations.

lashing block / high-resistance / single / for sailboats
lashing block
INO-ENDING 3.6

Working load: 1200 kg
Breaking load: 3600 kg

... the concept of the INO-BLOCK, the INO-ENDING provides an extremely simple solution for every sailing yacht. You just have to splice the textile cable around the system. The INO-ENDING can replace any textile cable with ...

high-resistance block / single / lashing / max. rope ø 12 mm
high-resistance block
55.246.01 / 55.246.02

Aluminium sheave Hard anodizing + PTFE, with plastic insert.

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Osculati
high-resistance block / single / lashing / for sailboats
high-resistance block
55.244.XX series

Delrin® sheave with stainless steel caps and ball bearings

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Osculati
high-resistance block / cheek / flat / single
high-resistance block

Light anodised alloy and stailess steel AISI 316 with derling sheave. Suitable for genoa/spinnaker sheets. Maximum rope diameter Ø max 12 mm. Black sheave. Length: 96 mm. Breaking load: 1600 kg. Requires 4 M5 TS screws to fit

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.