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Working load: 320 kg
Breaking load: 900 kg
... hard anodised aluminium Forged shackle (316L) Delrin rollers Linked products Fastening systems for roller blocks: fixed head, swivel fork, snap shackle, webbing
Wichard
Working load: 480 kg
Breaking load: 1,200 kg
Commentary Complete range of blocks Excellent high-speed low load and high-function load characteristics Interchangeable head fastening systems for multiple attachment methods Protection of the sheave ...
Wichard
Working load: 480 kg
Breaking load: 1,200 kg
Commentary Complete range of blocks Excellent high-speed low load and high-function load characteristics Interchangeable head fastening systems for multiple attachment methods Protection of the sheave ...
Wichard
Working load: 650 kg
Breaking load: 1,300 kg
SPECIFICATIONS Weight: 217.00 g Safe working Load: 650 kg Breaking Load: 1300 kg Max line size: 12 mm Pin diam: 5 mm Shackle diam: 5 mm Purchase: 4 Mounting: 0 90 free
Seldén Mast AB
Working load: 1,000 kg
Breaking load: 2,000 kg
SPECIFICATIONS Weight: 378.00 g Safe working Load: 1000 kg Breaking Load: 2000 kg Max line size: 14 mm Pin diam: 6 mm Shackle diam: 6 mm Purchase: 5 Mounting: 0 90 free Comment: Becket can be opened
Seldén Mast AB
Working load: 1,000 kg
Breaking load: 2,000 kg
SPECIFICATIONS Weight: 404.00 g Breaking Load: 2000 kg Safe working Load: 1000 kg System: PBB60 Max line size: 14 mm Upper breaking load: 10.00 kN Upper safe working load: 5.00 kN Mounting: 3xM6 Comment: Screw ...
Seldén Mast AB
Working load: 250 kg
Breaking load: 500 kg
The KBO blocks are our mainstream range of lashing block. The KBO blocks are available in simple, double and triple up to the KBO8. From the KBO1 to the KBO8, the blocks ...
Karver Systems
Working load: 350 kg
Breaking load: 700 kg
The KBO blocks are our mainstream range of lashing block. The KBO blocks are available in simple, double and triple up to the KBO8. From the KBO1 to the KBO8, the blocks ...
Karver Systems
Working load: 650 kg
Breaking load: 1,300 kg
The KBO blocks are our mainstream range of lashing block. The KBO blocks are available in simple, double and triple up to the KBO8. From the KBO1 to the KBO8, the blocks ...
Karver Systems
Working load: 3,500, 2,000, 1,100, 800 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: 1,800, 1,440 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: 800, 450, 1,100 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: 450 kg
Breaking load: 850 kg
Double block with spherical plain bearing and composite sides and sheaves
Rutgerson
Working load: 700 kg
Breaking load: 1,250 kg
Double block with spherical plain bearing and composite sides and sheaves
Rutgerson
Working load: 1,150 kg
Breaking load: 2,100 kg
Double block with spherical plain bearing and composite sides and sheaves
Rutgerson
Description: Swivel Block With Double Wheel Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)
Description: Swivel Double Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)
Working load: 200, 400 kg
Breaking load: 650, 600 kg
... Cheeks: Glass filled nylon Axle: Aluminium Dyn Axle: 316 Stainless Line size:5 -12vmm USAGE 40MM RANGE Sheet Blocks Foot Blocks / Leads Backstay systems
Holt
Working load: 204 kg
Breaking load: 544 kg
The 16 mm is Harkens® 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.
Harken
Working load: 240 kg
Breaking load: 700 kg
FEATURES Smallest and lightest ball bearing block available Precision moulded acetal sheave running on stainless steel ball bearings provide high performance & low friction Single loop head blocks include ...
Ronstan
Working load: 410 kg
Double block with plain bearing sheaves works well where "static" sheave loads are occurring. Smooth rolling delrin(tm) sheaves ensure smooth operation. Sheave Dia. 1 1/16" (27mm), Thickness 1 1/8" ...
Schaefer
Versatile Micro XS cheek block for 6 mm rope, which is characterised by its particularly low weight. The cage and bearing shells are made of robust stainless steel, the cover plates are made of black, UV-resistant ...
SPRENGER
Working load: 200 kg
Breaking load: 500 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
Description:Block Micro Double Category:Blocks Subcategory:17 Block Series Series:Stainless Block Type:Double Bearing Type:Plain Weight ...
RWO
Hvalpsund Net offers a wide range of miscellanious, high quality steel goods. Take a look at our products:
MAME BLOCK, DOUBLE WHEELS, WITH RING WELDED, STAINLESS 304, STAINLESS SHEAVE WITH BRASS BUSHING.
Working load: 550 lb
Breaking load: 2,000 lb
Description CONVENTIONAL BALL BEARING DESIGN WITH LONG LASTING CHARACTERISTICS. OPTIONAL ALUMINUM SHEAVE ON ROLLER BEARINGS FOR HIGHER LOADS. WORKING LOAD 550 LBS BREAKING LOAD 2000 LBS WEIGHT 4 OZ. MAX LINE 5/16″
Nautos
Sea Sure
Stainless Steel Blocks length: 3-7/8 width: 2-3/8 weight: 1 lb. shackle: sheave diameter: 2-1/8 Made with ball bearing sheaves
Garhauer Marine
Working load: 100 kg
Breaking load: 550 kg
Master Stainless Steel 22mm Ball Bearing blocks are compact and light. They are designed for sailboards, dinghies, and control lines.
Working load: 9,000 kg
Breaking load: 18,000 kg
Our High Performance blocks are developed with emphasis on design and strength. The blocks have aluminium ball bearing sheaves and are bolted together with allen screws for easy disassembling if needed. The ...
OH MARINE EQUIPMENT
Working load: 2,500 kg
Breaking load: 4,500 kg
Working load: 4 t
B2 is a standard double sheaved lifting block where the block housing is casted. SWL: 4 tons Wire Diameter: 10 – ...
BLOCK INTERNAL BINDING WITH SISTERHOOKS Two versions: * Bindings: aluminium-bronze with Sheave: aluminium-bronze * Bindings: stainless steel 316 with Sheave: delrin Wood: elm or teak Construction: ...
Breaking load: 2,000, 2,300, 3,400 kg
ΙΝΟΧ BLOCKS WITH DOUBLE WHEELS AND SWIVEL Code 1476-25 , Dimensions mmL 103 x W 30 x D 12 , Diam. mm8 -10 , Breaking Load Kg 2000 Code 1476-32 , Dimensions mmL 116 x W 36 x D 12 , Diam. mm8 ...
How to choose this product
A double block contains two sheaves. It is very widely employed because it can be used to create four- or five-line tackle, considerably increasing mechanical advantage.
Applications
Combined with a becket block, these devices can be used to make efficient five-line tackle.
Technologies
The axis of effort will be determined, in part, by the block's attachment method. Careful mounting will avoid overly large angles. Usually equipped with a ring, the block must be attached with a shackle. This should be chosen carefully to ensure that the tackle is oriented to reduce friction to a minimum.
How to choose
The diameter of the lines and the working loads will be the main elements to consider.
Advantages
- Multiples purchase by four or five
Disadvantages
- Requires a becket for maximum efficiency
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