Lewmar Synchro Halyard Blocks

£ 21.95 - £ 119.95

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Lewmar’s Synchro blocks are engineered for speed, efficiency and superior handling. We use a combination of scientifically optimised block geometry, a Free-Spin bearing and self-aligning head to reduce friction and increase efficiency by up to 40% over budget blocks on mainsheet systems. Each component is perfectly synchronised with the movement of the rope, providing you with an easier, smoother transfer of power from deck to sail and less wear on your rope.

Features

  • Stainless steel strap for improved strength and longer service life
  • Stiff glass fibre reinforced cheeks to prevent lines from wedging
  • Innovative design with “tool-free” sliding swivel locking mechanism
  • Practical switch from swivelling to fixed shackle

Applications
Plain bearing blocks are typically used for heavy and static loads in:

  • Halyard tuning
  • Mainsheet systems
  • Mast foot blocks
  • Mast head blocks
  • Boom vang

The toggle heads of the halyard blocks are designed to fit on the studs commonly found at mast bases – check the diameter of the stud against the width of the block jaws and pin diameter.

Sheave Diameter  | Optimum Line Size  | Max Line Size  | Working Load Limit  | Weight  | Width  | Pin Diameter  | Space to Pin
50mm   6mm   10mm   450kg   73g   13mm   5mm   8.2mm
60mm   8mm   10mm   800kg   122g   15mm   6mm   6.9mm
72mm   10mm   12mm   1100kg   198g   18mm   8mm   9.6mm
90mm   12mm   14mm   2000kg   414g   23mm   10mm   13.9mm
Part Number
Size
Port Solent
Warehouse
Y29925021
50mm
1
9
Y29926021
60mm
5
13
Y29927221
72mm
1
13
99530129
90mm
3
0