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roller bearing block / double / with fixed head / max. rope ø 10 mm
roller bearing block
93205

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

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Wichard
roller bearing block / double / with swivel / max. rope ø 10 mm
roller bearing block
94205

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 ...

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Wichard
roller bearing block / double / with swivel / with becket
roller bearing block
94206

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 ...

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Wichard
plain bearing block / double / with swivel / max. rope ø 12 mm
plain bearing block
405-001-05

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

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Seldén Mast AB
plain bearing block / double / with swivel / with becket
plain bearing block
406-001-06

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

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Seldén Mast AB
plain bearing block / cam cleat / cheek / flat
plain bearing block
406-001-19

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 ...

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Seldén Mast AB
roller bearing block / double / lashing / max. rope ø 6 mm
roller bearing block
KBO1

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 ...

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Karver Systems
roller bearing block / double / lashing / max. rope ø 8 mm
roller bearing block
KBO2

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 ...

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Karver Systems
roller bearing block / double / lashing / max. rope ø 8 mm
roller bearing block
KBO4

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 ...

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Karver Systems
plain bearing block / ball bearing / double / with swivel
plain bearing block
HTX

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 ...

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Lewmar
fiddle block / ratchet / ball bearing / double
fiddle 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
plain bearing block / mast foot / double / with swivel
plain bearing block
Synchro

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 ...

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Lewmar
plain bearing block / double / with swivel / max. rope ø 8 mm
plain bearing block
B300371B

Working load: 450 kg
Breaking load: 850 kg

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
plain bearing block / double / with swivel / max. rope ø 12 mm
plain bearing block
B300571B

Working load: 700 kg
Breaking load: 1,250 kg

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
plain bearing block / double / with swivel / max. rope ø 14 mm
plain bearing block
B300671B

Working load: 1,150 kg
Breaking load: 2,100 kg

Double block with spherical plain bearing and composite sides and sheaves

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Rutgerson
swivel block / double / with swivel / for sailboats
swivel block
GS315

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

swivel block / double / with swivel / for sailboats
swivel block
GS3151

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

double block / with swivel / for sailboats
double block
8390

Working load: 300, 500 kg

plain bearing block / double / with swivel / with becket
plain bearing block
HT92055 / HT92058

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

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Holt
ball bearing block / double / with fixed head / max. rope ø 5 mm
ball bearing 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
ball bearing block / double / max. rope ø 5 mm / for sailboats
ball bearing block
RF15202

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 ...

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Ronstan
plain bearing block / double / with shackle / max. rope ø 8 mm
plain bearing block
02-23

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" ...

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Schaefer
built-in block / double / max. rope ø 6 mm / for sailing dinghies
built-in 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
ball bearing block / double / with fixed head / max. rope ø 6 mm
ball bearing block
A2022

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 ...

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Allen Brothers
plain bearing block / double / with fixed head / max. rope ø 6 mm
plain bearing block
R1570

Description:Block Micro Double Category:Blocks Subcategory:17 Block Series Series:Stainless Block Type:Double Bearing Type:Plain Weight ...

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RWO
plain bearing block / double / for aquaculture
plain bearing block

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

plain bearing block / double / with swivel / with becket
plain bearing block
S315A

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

cam cleat block / double / with becket / with fixed head
cam cleat 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
plain bearing block / double / with shackle / max. rope ø 19 mm
plain bearing block
02.10

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Sea Sure
cheek block / flat / double / for sailboats
cheek block
40-24 SB

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

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Garhauer Marine
ball bearing block / double / with fixed head / for sailing dinghies
ball bearing block
SB-2203F

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.

ball bearing block / double / with swivel / max. rope ø 30 mm
ball bearing 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
plain bearing block / double / with swivel / max. rope ø 14 mm
plain bearing block
2755

Working load: 2,500 kg
Breaking load: 4,500 kg

plain bearing block / double / with swivel / for ships
plain bearing block
B2

Working load: 4 t

B2 is a standard double sheaved lifting block where the block housing is casted. SWL: 4 tons Wire Diameter: 10 – ...

plain bearing block / double / hook / for classic sailboats
plain bearing block

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: ...

plain bearing block / double / with swivel / max. rope ø 12 mm
plain bearing 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