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50mm Dynamic Blocks

Allen 50mm dynamic blocks offer low friction performance in a lightweight body. Built to suit the more demanding applications on dinghies and sports catamarans. Also, a great choice for fast running control lines and sheets on keelboats. Available with a wide range of accessories and features.


Swivel Lock - Single variations feature a built in swivel lock switch, located at the head of the block. Muti sheave options feature a removable swivel lock moulding.  


Dynamic Bearings - Twin rows of stainless steel ball bearings running on a stainless steel rail provide superior rolling speeds and durability. Great for fast running lines.


Becket – The hole through the middle of the block can be used as a tying off point (becket).


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. 

Filters:

Accessories

  • Becket
  • Cheek
  • Hook
  • Swivel
  • Tii-On

Block Configuration

  • Double
  • Quad
  • Quint
  • Single
  • Triple
  • Clear All
SKU Title breaking load kgmaximum line diameter mmmaximum working load kgshackle pin mm Length mm Weight g Price
A2050 50mm Single 900103004 98.63 73 £53.99
A2050C Single Cheek Block 90010300- 96 80 £56.10
A2050Tii- Single Tii-On 90010450- 72 61 £53.99
A2052 50mm Double 950104504 108.35 148 £111.13
A2053 Double With Becket 950104504 123.75 160 £114.53
A2054 50mm Triple 950104704 108.35 190 £156.01
A2054HK Triple Block with Hook 950104704 140 227 £172.33
A2055 Triple With Becket 950104704 123.75 223 £160.28
A2056 50mm Quad 950104705 108.35 269 £204.76
A2057 Quad With Becket 950104705 123.75 274 £216.80
A2059 50mm Quint Block 950104705 108.35 323 £240.22
A2156 Cheek Adaptor For 50mm Block. ---- 95 - £6.65