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Range / Blocks / 40mm dynamic blocks

40mm Dynamic Blocks

Allen 40mm dynamic blocks are made from high-strength, lightweight glass-loaded nylon and feature dynamic bearings. The result is a high-performance block range suitable for keelboats and dinghies.Dynamic Bearings - Twin rows of stainless steel ball bearings running on a stainless steel rail provide superior rolling speeds and durability when compared to plastic alternatives.Swivel Shackle Attachment - Double, triple, and quadruple sheave variations all come with a lockable swivel shackle attachment. The shackle can be locked in 90-degree orientations. Alternatively, remove the shackle lock and allow the block to rotate freely.Adjustable Cleat Arms - Single, double and triple sheave options are available with aluminium ball-bearing cam cleats mounted via an adjustable arm. The arm can be adjusted to suit your sheeting angle by simply loosening the nut and bolt through the centre of the block, loosening the side plates and retightening everything at the required angle.Maximum Working Load - If exceeded the block may not perform as designed. Breaking Load - The load at which a major block failure is likely to occur.

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Accessories

  • Becket
  • Cam Cleat
  • Fiddle
  • Hook
  • Lacing Eye
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Sheave Type

  • Dynamic
  • High Load
  • XHL

Block Configuration

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  • Double
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SKU Title Maximum Line Diameter mmbreaking load kgMaximum Working Load KgFixing Hole Centres mmShackle Pin mm Length mm Weight g Price
A2040Single10800180--6436.4£35.34
A2040BSingle With Removable Bolt10800180--6437.2£39.34
A2042Double Block101350320--8489£81.11
A2040Tii-Single Tii-On10800180--5834.5£38.96
A2041-676Single With Swivel, 20mm Fiddle Block And A.67610800180-4100140£132.16
A2041-677Single With Swivel, 20mm Fiddle Block And A.6776800180-4100128£125.39
A2043-677Single With Swivel, Becket And A.6776800180-4100152£127.92
A2040-4222ASSSingle With Swivel Plate And Spring10800180--7869£43.72
A2040XHL-BLUE40mm Extreme High Load Blue71£161.30
A2040XHLExtreme High Load81500650--5471£186.41
A2040XHL-ORANGE40mm Extreme High Load Orange71£161.30
A2040XHL-GOLD40mm Extreme High Load Gold71£161.30
A2040XHL-PURPLEExtreme High Load Purple71£161.30
A2040XHL-SILVERExtreme High Load Silver71£161.30
A2044-677HKSwivel Block With Becket, 20mm Fiddle, A.677 and Hook6800180--165£142.13
ATII-LOCK-40Tii-Lock-40-----2£4.33
A20401Single With Swivel Head10780240-454£44.34
A20401S-203040 & 30mm Linked Singles8780140--65£58.58
A20401-77Single With A..77 Cleat675080-4120£106.33
A20401BSingle With Becket10780240-458£46.75
A20401B-77Single With Becket And A..77 Cleat678080-4123£108.73
A20401BFSingle With Becket And Fiddle10780240-473£66.29
A20401BF-77Single With Becket, Fiddle And A..77 Cleat678080-4139£126.53
A20401BFHSingle With Becket, Fiddle And Hook6540240-492£72.30
A20401BFH-77Single With Becket, Fiddle, Hook And A..77 Cleat654080-4171£132.55
A20401CSingle Cheek1078024035.5-34£41.05
A20401CBSingle Cheek With Becket1078024062.5 X 14.6-42£43.46
A20401FSingle With Fiddle10780240-468£58.86
A20401F-77Single With Fiddle And A..77 Cleat678080-4134£120.78
A20401FH-77Single With Fiddle, Hook And A..77 Cleat654080-4153£126.82
A20402Double101150500-5102£88.69
A20402BDouble With Becket101150500-5113£91.10
A20403Triple101400750-5161£133.03
A20403-77Triple With A..77 Cleat61400750-5239£209.59
A20403BTriple With Becket101400750-5165£135.36
A20403B-77Triple With Becket And A..77 Cleat61400750-5242£211.93
A20404Quad101400750-5213£177.36
A20401HSingle With Hook10540250--73£50.35
A20401FHSingle With Fiddle And Hook6540240-487£64.88
A20401SLZSingle Stand Up1070024036.25-47£44.90
A20401SSingle With Ultra-Strap10700240--40£38.96
A20401SRSingle With Removable Ultra-Strap10700240--£43.37
A20401HLHigh Load Single10780360-4£68.35
A2040TiiHLSingle Tii-On High Load10800360--£62.94
A20401CHLHigh Load Single Cheek1078036035.50-55£62.88
A20401SRHLHigh Load Single With Removable Strap10700360--63£65.20