Double blocks

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double block
double block
KBO1

Working load: 250 kg
Breaking load: 500 kg
Thickness: 23 mm

... KBO50 = flanges in aluminum K TIPS – If you want to use a KBO block as a replacement for a competing block, check the working load of the block you are replacing. – Our blocks ...

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Karver Systems
double block
double block
KBO2

Working load: 350 kg
Breaking load: 700 kg
Thickness: 34 mm

... KBO50 = flanges in aluminum K TIPS – If you want to use a KBO block as a replacement for a competing block, check the working load of the block you are replacing. – Our blocks ...

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Karver Systems
double block
double block
KBO4

Working load: 650 kg
Breaking load: 1,300 kg
Thickness: 34 mm

KBO4 double block with textile shackle The KBO is our range of versatile blocks. All models are fixed with textile shackles (supplied except KBO50). The KBO is available in single, double ...

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Karver Systems
double block
double block
HTX series

Working load: 1,100, 2,000, 800, 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 ...

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Lewmar
double block
double block
Racing

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 ...

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Lewmar
double block
double block
Synchro

Working load: 800, 1,100, 450 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 ...

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Lewmar
double block
double block
RF15202

Working load: 240 kg
Breaking load: 700 kg
Weight: 23 g

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 an ...

double block
double block
405-001-05

Working load: 650 kg
Breaking load: 1,300 kg
Weight: 228 g

PLAIN BEARING BLOCK DOUBLE 405-001-05 Purchase: 4 Pin diam: 5 mm

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Seldén Mast AB
double block
double block
406-001-06

Working load: 1,000 kg
Breaking load: 2,000 kg
Weight: 378 g

PLAIN BEARING BLOCK DOUBLE BECKET 406-001-06 Comment: Becket can be opened

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Seldén Mast AB
double block
double block
406-001-19

Working load: 1,000 kg
Breaking load: 2,000 kg
Weight: 380 g

PLAIN BEARING BLOCK Comment: Screw Length= 3x MFT M6, L=53

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Seldén Mast AB
double block
double block
60213

Working load: 320 kg
Breaking load: 700 kg
Thickness: 28 mm

Double plain bearing block - Sheave 18 - Fixed eye Complete range of plain bearing blocks Modern design > Withstand high loads Ideal for static operations The sheave runs on the ...

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Wichard
double block
double block
406

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.

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Harken
double block
double block
HT92055

Working load: 200, 400 kg
Breaking load: 600, 650 kg
Weight: 98 g

... Cheeks: Glass filled nylon Axle: Aluminium Dyn Axle: 316 Stainless Line size:5 -12vmm USAGE 40MM RANGE Sheet Blocks Foot Blocks / Leads Backstay systems

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Holt
double block
double block
HT924 series

Working load: 150, 120, 240, 158, 110 kg
Breaking load: 900, 750, 700, 600 kg
Weight: 39, 44, 48, 52, 30 g

28MM RANGE Sheet Blocks Halyard Leads Vang / Cunningham sytems 28MM TECHNICAL Sheave Dia : 28mm Material : Acetal Resin / High Load Aluminium Cheeks : 316 Stainless Axle : 316 Stainless

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Holt
double block
double block
HT92804

Working load: 1,200, 1,500, 600, 1,400 kg
Breaking load: 1,000, 2,000, 3,000 kg
Weight: 310 g

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 system. ...

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Holt
double block
double block
B300371B

Working load: 450 kg
Breaking load: 850 kg
Weight: 91 g

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
double block
double block
B300571B

Working load: 700 kg
Breaking load: 1,250 kg
Weight: 226 g

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
double block
double block
B300671B

Working load: 1,150 kg
Breaking load: 2,100 kg
Weight: 350 g

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
double block
double block
A2022A

Working load: 200 kg
Breaking load: 500 kg

Articulating double block. This block is very similar to the standard double (A2022) except the central rivet and spacing mouldings have been removed. The blocks ...

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Allen Brothers
double block
double block
3532902055

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 ...

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SPRENGER
double block
double block
AK1031 series

A becket unique to this model is used. This has been designed for safety and is stronger than beckets used for existing models. The design of the sheave pin socket has been widened to improve the strength of the main body. The bearings ...

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ASANO GLOBAL CO. LTD.
double block
double block
AK S

Working load: 300 kg

... pin: SUS316 *Working load limit does not apply to the becket. *Safety working load is set variously in each country. Our blocks safety working load is decided around from 1/8 to 1/10 of their breaking load. *AK1625(Size ...

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ASANO GLOBAL CO. LTD.
double block
double block
AK1792

*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 ...

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ASANO GLOBAL CO. LTD.
double block
double block
GS3151 series

Swivel Double Sheave Block With Bridge Material: SS304/SS316 Size:25mm/32mm/50mm Surface Treatment:"EP" (Electro Polished)

double block
double block
8390 series

Breaking load: 1,940, 690, 1,160 kg

double block
double block
00.23

"00" Double Block with Becket SKU: 00.23 25mm Double Block with Becket Category: 25mm blocks RRP: £16.74

double block
double block

Hvalpsund Net offers a wide range of miscellanious, high quality steel goods. Take a look at our products:

double block
double block
R1570

Block Micro Double Category:Blocks Subcategory:17 Block Series Series:Stainless Block Type:Double Bearing Type:Plain Weight (grm):15 Sheave ...

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RWO
double block
double block
02-33

Double Block with Front Side Shackle and Becket. Use with either 02-23 or 02-24 for a strong 4:1 purchase. Length = 4 5/32" (106mm), Width = 1 3/16" (30mm), Thickness 1 1/8" (28mm), Weight = 3 oz. (85g)

double block
double block

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Ording Blockmakers
double block
double block
2101

Working load: 550 kg
Breaking load: 980 kg

» Aluminum material with high strength, delicacy appearance, longer block life » Preservative treatment » Delrin balls » Stainless steel accessories. Use for: Cunninghams Traveler controls Vangs Barberhaulers Outhauls Flag ...

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Blue Shark Marine Ltd.
double block
double block
S315A

MAME BLOCK, DOUBLE WHEELS, WITH RING WELDED, STAINLESS 304, STAINLESS SHEAVE WITH BRASS BUSHING.

double block
double block
92427

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″

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Nautos
double block
double block
711309

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 ...

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OH MARINE EQUIPMENT
double block
double block
8-10mm

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SB woodenblocks
double block
double block
EYD series

Working load: 160 kg - 540 kg

Our wooden blocks are specifically designed for traditional boats. Its are commonly called "Havraise blocks". Its are ash, copper riveted. The sheave is Céloron, the handle and shaft are in stainless ...

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Esprit Yachting
double block
double block
01476

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
double-block

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