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

... guide and rope shackle attachment simplifies the use of the KBO block. +LIGHTWEIGHT - The design and material optimisation make the block extremely light. +PERFORMANCE - The KBO block ...

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

Working load: 350 kg
Breaking load: 700 kg

... guide and rope shackle attachment simplifies the use of the KBO block. +LIGHTWEIGHT - The design and material optimisation make the block extremely light. +PERFORMANCE - The KBO block ...

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

Working load: 650 kg
Breaking load: 1300 kg

... guide and rope shackle attachment simplifies the use of the KBO block. +LIGHTWEIGHT - The design and material optimisation make the block extremely light. +PERFORMANCE - The KBO block ...

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

Working load: 950 kg
Breaking load: 1900 kg

... guide and rope shackle attachment simplifies the use of the KBO block. +LIGHTWEIGHT - The design and material optimisation make the block extremely light. +PERFORMANCE - The KBO block ...

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

Working load: 1300 kg
Breaking load: 2600 kg

... guide and rope shackle attachment simplifies the use of the KBO block. +LIGHTWEIGHT - The design and material optimisation make the block extremely light. +PERFORMANCE - The KBO block ...

plain bearing block / double / with swivel / max. rope ø 8 mm
plain bearing block
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
plain bearing block / double / with swivel / max. rope ø 12 mm
plain bearing block
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
plain bearing block / double / with swivel / max. rope ø 14 mm
plain bearing block
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
plain bearing block / double / with swivel / with becket
plain bearing block
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
plain bearing block / double / with swivel / with becket
plain bearing block
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
double block / with swivel / for sailboats
double 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)

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
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 8 mm
ball bearing block
2101

Working load: 550 kg
Breaking load: 980 kg

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BlueShark Yacht Co., Ltd.
ball bearing block / double / with becket / with fixed head
ball bearing block
2104

Working load: 550 kg
Breaking load: 980 kg

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BlueShark Yacht Co., Ltd.
plain bearing block / double / max. rope ø 10 mm / max. wire rope ø 10 mm
plain bearing block
MR1001-0225

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

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
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
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
plain bearing block / double / with becket / with shackle
plain bearing 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)

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Schaefer
plain bearing block / double / with becket / with fixed head
plain bearing block
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
plain bearing block / double / with fixed head / max. rope ø 6 mm
plain bearing block
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
plain bearing block / double / with swivel / for sailboats
plain bearing block
S315A

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

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 / for ships
plain bearing block
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 – ...

ball bearing block / double / with becket / for sailboats
ball bearing block
HT 2023

... THESE BLOCKS: STAINLESS STEEL BALLS RUNNING OVER STAINLESS STEEL RAILS RESULT IN A HIGH CAPACITY AND PERFORMANCE FOR A SUCH A COMPACT PRODUCT.COLD FORGED RADIUSED HEAD INCREASE ARTICULATION , IS KIND TO ROPE END SUPER ...

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Nautos
cam cleat block / double / with becket / with fixed head
cam cleat block
92427

Working load: 550 lb
Breaking load: 2000 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
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
plain bearing block / double / with swivel / for sailboats
plain bearing block
00.20

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Sea Sure

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