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Single blocks
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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, ...
Harken
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 ...
Seldén Mast AB
Working load: 70 kg
Breaking load: 140 kg
Weight: 7 g
SINGLE STRAP 402-001-01 Purchase: 2 Mounting: 90
Seldén Mast AB
Working load: 70 kg
Breaking load: 140 kg
SINGLE COMPOSITE 401-001-01 Purchase: 2 Comment:
Seldén Mast AB
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 ...
Karver Systems
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, ...
Karver Systems
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 ...
Karver Systems
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. ...
Ronstan
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 ...
Spinlock
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 ...
Lewmar
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 ...
Lewmar
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 ...
Lewmar
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
Holt
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 ...
Wichard
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: ...
Antal
Working load: 37 kg
Breaking load: 150 kg
Weight: 19 g
... plastic high working and breaking loads low weight and excellent price/performance ratio Compact and lightweight Super Mini block for 10 mm wire or dyneema with wire swivel. It is suitable for water sports, but also ...
SPRENGER
Working load: 150 kg
Breaking load: 600 kg
Weight: 37 g
... swivel: interchangeable = end-no. 00 riveted = end-no. 55 low weight and excellent price/performance ratio Versatile 8 mm block with swivel (detachable). The dimensionally stable stainless steel tab shows the maximum ...
SPRENGER
Weight: 91 g
... fixing of bows and swivels by means of bolts and rings low weight and excellent price/performance ratio Classic mast foot block for 12 mm rope, with stainless steel reinforcement bracket. The bolt with a split ring ...
SPRENGER
Breaking load: 400 kg
Allen High Tension Blocks are specifically intended for use where wire or Dyneema® lines are subjected to low rotational high loads. The range is made from 316 Stainless steel and has a single row of ...
Allen Brothers
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 ...
Allen Brothers
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 ...
Allen Brothers
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
Rutgerson
Working load: 700 kg
Breaking load: 1,250 kg
Weight: 115 g
Single block with spherical plain bearing and composite sides and sheave
Rutgerson
Working load: 1,150 kg
Breaking load: 2,100 kg
Weight: 205 g
Single block with spherical plain bearing and composite sides and sheave
Rutgerson
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 ...
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 ...
NODUS FACTORY
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 ...
NODUS FACTORY
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
NODUS FACTORY
Articulated pulley which will facilitate the tension of the sail attached to the adjustment ring
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 ...
ASANO GLOBAL CO. LTD.
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 ...
ASANO GLOBAL CO. LTD.
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 ...
ASANO GLOBAL CO. LTD.
Swivel Single Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)
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 ...
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
UBI MAIOR ITALIA
Working load: 300 kg
Breaking load: 750 kg
Weight: 79 g
NENUPHAR
Center diameter: 25 mm
NENUPHAR
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
NENUPHAR
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 ...
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.
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 ...
Breaking load: 1,940, 1,240, 1,360 kg
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 ...
Edson Marine
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 ...
Edson Marine
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 ...
Edson Marine
Your suggestions for improvement:
A single block has only one sheave. Models differ in size, sturdiness, attachment and bearing systems.
ApplicationsSuch blocks can be used in two-line block and tackle, as an intermediary pulley in multi-block tackle or as a line lead block.
TechnologiesEach 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.
Line diameter and working load will be the main choice criteria. Manufacturers include detailed technical information in their catalogs.
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