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Working load: 550, 900, 1,300 kg
Breaking load: 1,100, 1,800, 2,600 kg
... USSpars produces four different block sizes: 28mm, 45mm, 60mm, 80mm. ...
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 adjusted, ...
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 efficient central ...
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: 113 kg
Breaking load: 544 kg
Weight: 11 g
... 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 kg) maximum working ...
Harken
Working load: 240 kg
Breaking load: 700 kg
Weight: 23 g
... Double block with loop head, ideal for splicing/lashing attachment or can be shackled using RF633S. FEATURES Smallest and lightest ball bearing block available. Precision moulded acetal sheave running on stainless ...
Ronstan
... standard on everything from dinghies up to larger yachts. Soft-Attachment blocks are ideal for backstays, runners, as gooseneck blocks for German sheeting or as turning blocks redirecting a Code sheet, ...
SELDÉN MAST
Working load: 480 kg
Breaking load: 900 kg
Thickness: 42 mm
... removed for maintenance Applications For dinghies and catamarans applications: genoa sheets, boom vang, footmast block, masthead block… For larger yachts: barber-hauler, cunnigham, various, control lines… Materials ...
Wichard
Working load: 750 kg
Breaking load: 1,500 kg
Weight: 116 g
... The YC50SA is a high-quality sailboat block designed for demanding marine applications. It features a single sheave with becket, constructed from aluminum and Delrin, and utilizes ball bearings for smooth operation. The ...
UBI MAIOR ITALIA
Working load: 3,400 kg
Breaking load: 6,800 kg
Weight: 977 g
... is a high-performance mast block designed for demanding sailing applications. It features a tulip shape and is constructed from aluminum, with Torlon roller bearings for high load capacity and reduced friction. This lite block ...
UBI MAIOR ITALIA
Working load: 1,800 kg
Breaking load: 3,600 kg
Weight: 375 g
... YC80S is a high-performance sailboat block designed for demanding marine applications. Constructed with a combination of aluminum and Delrin, it features a ball bearing system and a robust shackle for secure attachment. ...
UBI MAIOR ITALIA
Working load: 1,300 kg
Breaking load: 2,600 kg
Thickness: 37 mm
... Center diameter (mm) - 15.4 Side material - Stainless steel / inox ...
KARVER SYSTEMS
Working load: 500 kg
Breaking load: 1 t
Weight: 113 g
... Weight - 0.113 kg Boat size - 10 to 110 ft Workload - 0,50 T Breaking load - 1,00 T ...
KARVER SYSTEMS
Working load: 1 t
Breaking load: 2 t
Weight: 174 g
... Weight - 0.174 kg Boat size - 10 to 110 ft Workload - 1,00 T Breaking load - 2,00 T ...
KARVER SYSTEMS
Working load: 1,200, 1,650, 3,000 kg
Rutgerson’s Clewblocks have a 60mm, 80mm or 100mm removable acetal sheave and are available in both silver and black anodized cheek plates. The webbing slots are smoothly rounded in order to prevent chafe for maximum durability, and the appliance angles ...
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: 450 kg
Breaking load: 850 kg
Weight: 50 g
... Single block with spherical plain bearing and composite sides and sheave ...
RUTGERSON
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 rail or padeye No ...
Spinlock
Working load: 500 kg
Breaking load: 2,000 kg
The sheave assemblies are made from anodized aluminium. Sheaves are fitted with a ball bearing system.
Working load: 380 kg - 2,000 kg
... – These blocks are made of a material GVX, designed from high resistance fiberglass.- Hooked with a toggle, an articulated toggle, or a shackle ...
Working load: 1,750 kg
... 10 Series Single Block with Stainless Steel cheeks and Aluminum "universal circuit" ball bearing sheave. Aluminum sheave run on Delrin(tm) ball bearings for a very strong yet low-friction sheave. Stainless Steel D shackle run on a swivel ...
Schaefer
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 of four M5 TS ...
Working load: 300 kg
Breaking load: 600 kg
Weight: 120 g
... optimized rope guidance by specially formed cheek parts and trap of stainless steel for more security and stability wobble riveting avoids sharp burrs on the rivet head marking of the maximum rope Ø in the enhancing strap cheek of glass fibre reinforced ...
SPRENGER
Working load: 1,000 kg
Center diameter: 60 mm
Weight: 95 g
... Looper series, single block, sheave Ø60, SWL 1000 kg 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 Resin ...
Antal
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 2-to1 solution! Four ...
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 hook friction - ...
NODUS FACTORY
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 becket. You’ll ...
Allen Brothers
Breaking load: 225 kg
Weight: 15 g
... Series 17 double block with loop top and 17mm Acetal sheave and stainless steel sided plates for general purpose use.Ideal for small marine and industrial rope applications ...
RWO
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, ...
Barton Marine
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
... Swivel Double Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished) Swivel Double Sheave Block With Bridge are compact and lightweight multi-purpose snatch ...
GMTmarine
Working load: 900 kg
Breaking load: 1,800 kg
Thickness: 43 mm
... to its innovative patented technology, Olli Block preserves the surface it comes into contact with. In other words, no noise and no damage to your boat. What Makes Olli Block the Best Choice Olli Block: ...
Center diameter: 20, 25, 28, 30 mm
... Stanchion block.For stanchion diam. 20 mm to 25 mm Ball bearing sheave diam. 30 mm ...
A sailboat block consists of one or more sheaves held between two cheeks or chocks. It increases mechanical advantage and can be used to alter the direction of lines running through it.
ApplicationsThese devices have multiple uses on board including mainsail block and tackle, spinnaker sheet guide, barber hauler, hell block, deck block and downhaul tackle, among others.
TechnologiesThe great majority of cruising sailboat blocks are aluminum or stainless steel. Titanium blocks now can be found on some racing boats, while traditional craft have beautiful wooden blocks. Single, double and even triple blocks are used in block and tackle to increase mechanical advantage, as on a mainsail sheet.
Blocks can be attached via a becket, a swivel, a rotating tower with a jam or cam cleat, a fork, a fabric strop or be screwed to the deck or attached to another fitting. Blocks with narrow metal sheaves are used with cable or wire rope. Sheaves can ride on ball bearings, rollers or a simple friction axle. Ratchet blocks have internal teeth so that the sheave turns in one direction only, making it easier to keep tension on the line.
Choice will depend on specific application, line diameter and the possible need for an integrated cleat. Blocks with rollers are generally the most efficient due to reduced friction and increased sturdiness.
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