Harken - Radial® Self-Tailing Winches (Single Speed)

Harken - Radial® Self-Tailing Winches (Single Speed)


Winch size:  
Winch material:  

Manufacturer #:  15STA

Price:  £479.99
RRP:  £564.90
Save:  £84.91
   (£399.99 Exc. VAT)

Harken Radial Winches have successfully balanced the need for a secure grip and line longevity with smooth, controlled easing while under load.

Details sailors will appreciate: smaller winches that carry higher loads, stress-free seasonal maintenance, and one-person installation with easy upgrades to power.

The Radial winch drum’s gripping surface is shaped for each winch size and drum material and features diagonal ribs (rather than textured abrasive materials) to maximize gripping power and greatly reduce line wear. The ribs on chrome winches are spaced closer together than on the aluminium winches to increase friction as the chrome finish is more slippery. This optimizes your grip for trimming as well as for easing the sail in a smooth, controlled manner.

Size 15 and 20 winches use composite bushings to handle high loads in a small package.

3 year warranty

We're currently unable to show live stock information on our website, so if you need delivery fast we strongly recommend checking availability first. Simply fill out the form below and we'll get back to you, or call us on +44 (0)1243 375774 for an immediate answer.

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Product Information

Harken Radial Winch Features

Maximum holding power with minimum line wear

  • Nonabrasive diagonal ribs on gripping surface hold line securely and reduce line wear; ribs shaped for each winch size and drum material.

Smooth, controlled easing

  • Patented angle of ribs drives line wraps down when easing to keep them on area of drum that provides best control.

High-strength, lightweight

  • Weight savings of 25 to 50 percent compared to Harken Classic winch line.
  • High-strength composite roller bearings and bushings reduce friction under load.
  • Load-carrying gears and pins are 17-4 PH stainless steel for strength, corrosion resistance.

Adjustable stripper arm integrated into winch top for safer operation

  • Stripper arm completely covers rotating winch top, preventing fingers and clothing from catching in moving parts.
  • Adjusts to multiple positions after the winch is mounted to optimize line exit.
  • Shaped to smoothly feed line in and out of self-tailing jaws.

Power-grip jaws shaped for easy line entry, optimum hold

  • Upper jaw adjusts under line pressure; accepts a variety of line sizes.
  • Teeth grip evenly with or without load.

Simple to install, easy maintenance

  • Patented mounting system for fast, one-person installation without removing drum.
    1. Snap off the skirt at the base of the winch.
    2. Slide bolts through the slots in the winch base and snap the plastic skirt back on.
    3. Place the stud bolts into the predrilled holes on the deck and tighten from belowdeck.
  • Snap-fit design keeps bearings captive when drum is removed for maintenance.
  • Easy to disassemble for service on deck; socket, washer, and screw-top snap-fit together for mistake-free reassembly.
  • Composite roller bearings don’t require lubrication.

Harken Single Speed Radial Winch Specifications

Size Dimensions Weight Line Ø LE Gear Ratio (:1) Power ratios (:1)
15 D - 73mm 
B - 120mm
H - 139mm
Aluminium - 2.1kg 6mm (min)
10mm (max)
58mm 2.43 16.9
20 D - 73mm
B - 137mm
H - 148mm
Aluminium - 2.4kg
Chrome - 3.4kg
6mm (min)
12mm (max)
61mm 2.76 19.2

Harken Winch Selection Guide

  Genoa Mainsail Spinnaker Staysail
Winch size Sheet Halyard End-boom
Halyard Reef Sheet Halyard Topping lift/
  Max sail area
100% foretriangle
( I x J x 0.5 )
Max I 4:1 sheet
max sail area
( P x E x 0.5 )
Max P Max P Max sail area
( I x J x 1.8 )
Max I Max I Max I2
6 7m2 7.6m - 7.6m 10.4m 46.5m2 7.6m 10.7m 7.6m
8 10.5m2 11m 14m2 9.8m 12.2m 74m2 11m 13.4m 11.3m
15 12.5m2 12m 18m2 10.5m 13m 83m2 12m 14.2m 12m
20 14.5m2 12.8m 21m2 11.6m 14m 91m2 12.8m 15.2m 12.8m
35 21m2 14.6m 30m2 13.1m 16.2m 105m2 14.6m 17m 14.6m
40 25m2 16.5m 38m2 14.9m 17.4m 115m2 16.5m 18.6m 16.5m
46 34m2 21m 58m2 19.5m 22.2m 142m2 20.7m 23.8m 21m
50 36m2 22.2m 65m2 20.7m 23.8m 162m2 22.5m 25m 22.2m
60 49m2 25m 79m2 24.4m 28m 204m2 25.9m 29.9m 25m
70 55m2 26.2m 93m2 25.9m 29.6m 279m2 27.7m 33m 26.2m
80 88m2 30.5m 125m2 31.1m - - 32m -  

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