Ronstan

Ronstan 55mm Orbit Ratchet Blocks

Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique cross-hole geometry, delivering up to 20:1 holding power to resist slipping of the loaded line while minimising rope wear. Ball bearings ensure minimum friction under load and a free running sheave when the ratchet is disengaged.

Control switches are located on both sides of the block to remain accessible wherever the block is fitted. In auto mode, the ratchet mechanism engages when load is applied but disengages when released to let the sheet run out freely – ideal for gybing asymmetric spinnakers. In manual mode, the switch is used to set up the block with ratchet either on or off as required.

It is essential equipment on racing dinghies and sports boats, and when you want the ultimate holding power.

  • Manual, Auto and Auto+Manual blocks.
  • Awesome ratchet block holding power.
  • Simple and secure attachment.
  • Smooth easing of sheets.
  • High performance cleating.
Product Compare (0)
Ronstan Series 55 RT Orbit Block, Single Swivel Head
Ronstan Series 55 RT Orbit Block, Single Swivel Head
$85.35
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Single Becket Swivel
Ronstan Series 55 RT Orbit Block, Single Becket Swivel
$83.16
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Single Cleat Swivel, Auto
Ronstan Series 55 RT Orbit Block, Single Cleat Swivel, Auto
$152.92
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Single Becket Cleat Swivel
Ronstan Series 55 RT Orbit Block, Single Becket Cleat Swivel
$152.92
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Cheek, Clockwise Rotation
Ronstan Series 55 RT Orbit Block, Cheek, Clockwise Rotation
$78.12
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotatio
Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotatio
$78.12
Multiple gripping faces machined into our ratchet block sheaves work in conjunction with our unique..
Ronstan Series 55 RT Orbit Block, Single Swivel Head
Ronstan Series 55 RT Orbit Block, Single Swivel Head
ronRF56100
$85.35
Ronstan Series 55 RT Orbit Block, Single Becket Swivel
Ronstan Series 55 RT Orbit Block, Single Becket Swivel
ronRF56110
$83.16
Ronstan Series 55 RT Orbit Block, Single Cleat Swivel, Auto
Ronstan Series 55 RT Orbit Block, Single Cleat Swivel, Auto
ronRF56120
$152.92
Ronstan Series 55 RT Orbit Block, Single Becket Cleat Swivel
Ronstan Series 55 RT Orbit Block, Single Becket Cleat Swivel
ronRF56130
$152.92
Ronstan Series 55 RT Orbit Block, Cheek, Clockwise Rotation
Ronstan Series 55 RT Orbit Block, Cheek, Clockwise Rotation
ronRF56151
$78.12
Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotatio
Ronstan Series 55 RT Orbit Block, Cheek Anti-Clockwise Rotatio
ronRF56151A
$78.12
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