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block / plain bearing / double / with swivel / max. rope ø 12 mm
block / plain bearing
PBB 50

Working load: 700 kg
Breaking load: 1400 kg

... working load: 700 kg Breaking load: 1400 kg Max line size: 12 mm Pin diam: 5 mm Shackle diam: 5 mm System: PBB50 Block type: double

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Seldén Mast AB
block / plain bearing / double / with swivel / with becket
block / plain bearing
PBB 60

... working load: 1100 kg Breaking load: 2200 kg Max line size: 14 mm Pin diam: 6 mm Shackle diam: 6 mm System: PBB60 Block type: doubleBecket

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Seldén Mast AB
cam cleat block / flat / cheek / plain bearing
cam cleat block
PBB 60

Working load: 1100 kg
Breaking load: 2200 kg

Specifications Weight: 404.00 g Breaking load: 2200 kg Safe working load: 1100 kg System: PBB60 Max line size: 14 mm Upper breaking load: 11.00 kN Upper safe working load: 5.50 kN Mounting: 3xM6

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Seldén Mast AB
block / plain bearing / double / with becket / with swivel
block / plain bearing
PBB 80

Working load: 2000 kg
Breaking load: 4000 kg

... working load: 2000 kg Breaking load: 4000 kg Max line size: 16 mm Pin diam: 10 mm Shackle diam: 8 mm System: PBB80 Block type: doubleBecket

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Seldén Mast AB
flat block / cheek / double / with fork
flat block
PBB80

Working load: 2000 kg
Breaking load: 4000 kg

Specifications Weight: 628.00 g Breaking Load: 4000 kg Safe working Load: 2000 kg System: PBB80 Max line size: 16 mm Upper breaking load: 20.00 kN Upper safe working load: 10.00 kN Mounting: 3xM8

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Seldén Mast AB
ball bearing block / double / with shackle / max. rope ø 12 mm
ball bearing block
Racing

Working load: 1800 kg
Breaking load: 3600 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 ...

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Lewmar
ball bearing block / double / with shackle / max. rope ø 10 mm
ball bearing block
Control

Working load: 480 kg
Breaking load: 1200 kg

Ideal for use with hand-held loads, Lewmar’s Control Blocks feature lightweight, performance load-bearing capacity. MRT (Metal Replacement Technology) and a stainless steel central race and balls provide a weight advantage, ...

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Lewmar
ball bearing block / double / with becket / with shackle
ball bearing block
Control

Working load: 300 kg
Breaking load: 600 kg

Ideal for use with hand-held loads, Lewmar’s Control Blocks feature lightweight, performance load-bearing capacity. MRT (Metal Replacement Technology) and a stainless steel central race and balls provide a weight advantage, ...

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Lewmar
flat block / cheek / snatch / double
flat block
Control

Working load: 120 kg
Breaking load: 240 kg

The ideal solution for symmetric twinning lines and asymmetric tweaking.

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Lewmar
block / plain bearing / double / with swivel / with shackle
block / plain bearing
Synchro

Working load: 450 kg - 2000 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
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: 1200 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: 1200 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 / max. rope ø 12 mm
roller bearing block
95205

Working load: 600 kg
Breaking load: 1500 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
95206

Working load: 600 kg
Breaking load: 1500 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 / lashing / max. rope ø 6 mm
roller bearing block
KBO1

Working load: 250 kg
Breaking load: 500 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows ...

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

Working load: 350 kg
Breaking load: 700 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows ...

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

Working load: 650 kg
Breaking load: 1300 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows ...

roller bearing block / double / lashing / max. rope ø 10 mm
roller bearing block
KBO6

Working load: 950 kg
Breaking load: 1900 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows ...

roller bearing block / double / lashing / max. rope ø 12 mm
roller bearing block
KBO8

Working load: 1300 kg
Breaking load: 2600 kg

The KBO range is available in double and triple blocks with rope shackle attachments up to the KBO8. The use of soft attachments avoids metallic connections between blocks and allows ...

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

Working load: 450 kg
Breaking load: 850 kg

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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

Working load: 700 kg
Breaking load: 1250 kg

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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

Working load: 1150 kg
Breaking load: 2100 kg

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
block / plain bearing / double / with swivel / with becket
block / plain bearing
B300372B

Working load: 450 kg
Breaking load: 850 kg

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
block / plain bearing / double / with swivel / with becket
block / plain bearing
B300572B

Working load: 700 kg
Breaking load: 1250 kg

... Rutgerson block assortment is unique in its design and functionallity. The entire production chain takes place at our premises in Marstrand. In-house sailing experience together with advanced engineering ensures that ...

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Rutgerson
block / plain bearing / double / max. rope ø 10 mm / max. wire rope ø 10 mm
block / plain bearing
MR1001-0225

block / plain bearing / double / with swivel / max. rope ø 10 mm
block / plain bearing
MR1007-0225

friction block / double / with swivel / for sailboats
friction block
8390

Working load: 300, 500 kg

ball bearing block / double / with swivel / max. rope ø 10 mm
ball bearing block
YC50D

Working load: 750 kg
Breaking load: 1500 kg

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UBI MAIOR ITALIA
ball bearing block / double / with swivel / max. rope ø 14 mm
ball bearing block
YC60D

Working load: 1250 kg
Breaking load: 2500 kg

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UBI MAIOR ITALIA
ball bearing block / double / with swivel / with becket
ball bearing block
YC60DA

Working load: 1250 kg
Breaking load: 2500 kg

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UBI MAIOR ITALIA
ball bearing block / double / with swivel / max. rope ø 18 mm
ball bearing block
YC80D

Working load: 1800 kg
Breaking load: 3600 kg

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UBI MAIOR ITALIA
roller bearing block / double / with swivel / max. rope ø 12 mm
roller bearing block
RT60DL

Working load: 1400 kg
Breaking load: 2800 kg

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UBI MAIOR ITALIA
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)

block / plain bearing / double / with swivel / for ships
block / plain bearing
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 – ...

block / plain bearing / double / for ships
block / plain bearing
F2

Working load: 12 t - 50 t

F2 is our standard double sheaved block made ​​of plates which continues from the B1 series. SWL: 12 – 50 tons Wire Diameter: 14 – ...

mast foot block / double / max. rope ø 14 mm / for sailboats
mast foot block
RF79251

Working load: 2200 kg
Breaking load: 4500 kg

Features The highest strength-to-weight ratio Minimal friction loss, especially when working at high loads Totally reliable and trouble free performance Simplicity of design and construction to facilitate maintenance ...

cheek block / flat / double / with fork
cheek block
RF78251

Working load: 1990 kg
Breaking load: 3980 kg

The Torlon® Roller and Ball Bearing self-contained alloy sheave packages provide reliable, low-friction performance at high loads. The high axial loads are carried by Torlon® roller needle bearings, while side thrust loads are taken up ...

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 / with fixed head / with becket
ball bearing block
407

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
roller bearing block / double / with fixed head / max. rope ø 6 mm
roller bearing block
HT 92524

Working load: 220 kg
Breaking load: 600 kg

... Material: Acetal resin 316 stainless steel straps Axle: 316 stainless steel Line size:2.5 - 6mm USAGE Control Lines Lead Blocks Vang Cascades Cunningham Systems Halyard Leads Rig Tension Systems - (Boat Breakers)

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Holt
roller bearing block / double / with swivel / with becket
roller bearing block
HT 92525

Working load: 240 kg
Breaking load: 600 kg

... Material: Acetal resin 316 stainless steel straps Axle: 316 stainless steel Line size:2.5 - 6mm USAGE Control Lines Lead Blocks Vang Cascades Cunningham Systems Halyard Leads Rig Tension Systems - (Boat Breakers)

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Holt
block / plain bearing / double / with swivel / for sailboats
block / plain bearing
00.20

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Sea Sure
ball bearing block / double / with becket / with shackle
ball bearing block
19.84

Working load: 475 kg
Breaking load: 1000 kg

Double Ball Race Block shackle & becket Breaking Load:1000kg Safe work load:475kg

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Sea Sure
block / plain bearing / double / with becket / with shackle
block / plain bearing
BB-0204F

Working load: 160 kg

Master 29mm block is strong and compact. They are available in a wide range of configurations and ideal for control lines on dinghies to yachts.

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Master
block / plain bearing / double / with fixed head / for sailboats
block / plain bearing
BB-0207F

Working load: 160 kg

Master 29mm block is strong and compact. They are available in a wide range of configurations and ideal for control lines on dinghies to yachts.

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

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: ...

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Blockmakers Ording
block / plain bearing / double / hook / for classic sailboats
block / plain bearing
HAKBLOCK

Wood: elm or teak Bindings: stainless steel Sheave: delrin Constuction: solid wood Finishing treatment: elm finish gloss

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Blockmakers Ording
block / plain bearing / double / with becket / with fixed head
block / plain bearing
3506901055

Working load: 175 kg
Breaking load: 700 kg

Your advantages: sliding bearing strongly loadable cheek parts stainless steel wobble riveting: avoids sharp burrs at the rivet head sheaves 25 x9,2 mm of high quakity UV-resistant plastic easy fixing of bows and swivels by means of bolts ...

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SPRENGER
block / plain bearing / double / with fixed head / max. rope ø 6 mm
block / plain bearing
3506701055

Working load: 175 kg
Breaking load: 700 kg

Your advantages: sliding bearing strongly loadable cheek parts stainless steel wobble riveting: avoids sharp burrs at the rivet head sheaves 25 x9,2 mm of high quakity UV-resistant plastic easy fixing of bows and swivels by means of bolts ...

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SPRENGER
block / plain bearing / double / with shackle / max. rope ø 8 mm
block / plain bearing
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
block / plain bearing / double / with becket / with shackle
block / plain bearing
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)

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Schaefer
block / plain bearing / double / with fixed head / max. rope ø 6 mm
block / plain bearing
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
built-in block / double / with fork / max. rope ø 6 mm
built-in block
R1640

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

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RWO
block / plain bearing / double / with swivel / for sailboats
block / plain bearing
S315A

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

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