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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 kglength mmmaximum line diameter mmmaximum working load kgshackle pin mm Weight g Price
A2050 50mm Single 90098.63103004 73 £51.66
A2050C Single Cheek Block 9009610300- 80 £53.69
A2050Tii- Single Tii-On 9007210450- 61 £51.66
A2052 50mm Double 950108.35104504 148 £106.34
A2053 Double With Becket 950123.75104504 160 £109.60
A2054 50mm Triple 950108.35104704 190 £149.29
A2054HK Triple Block w/Hook 950140104704 227 £164.92
A2055 Triple With Becket 950123.75104704 223 £153.38
A2056 50mm Quad 950108.35104705 269 £195.94
A2057 Quad With Becket 950123.75104705 274 £207.47
A2059 50mm Quint Block 950108.35104705 323 £229.87
A2156 Cheek Adaptor For 50mm Block. -95--- - £6.36