Use Chart | Standart | One-, Two-, & Three Speed | Self-Tailing | Three-Speed Self-Tailing | Wide-Body Self-Tailing | Stainless Steel | Powered | Electric | Hydraulic | Hydraulic Power Units | Control Boxes Circuit Breakers, & Switches | Racing Features | Quattro | Two-Speed Self-Tailing Racing | Three-Speed & Three- Speed Self-Tailing Racing | Wide-Body Three-Speed Top-Cleating Racing | Large Wide-Body Multi- Speed Racing | Large Wide-Body Self- Tailing Racing | Pedestals & Accessories | Drive Components | 2003 AC Winch Systems | SeepdGrip Handles | Ball Bearing Handles | Service Kits
Winches > Three-Speed Self-Tailing
Three-speed self-tailing winches are ideal sheet winches on larger boats. The three speeds allow sheets to be trimmed quickly, even in heavy conditions. Self-tailing allows one crew member to handle the entire trimming task—perfect for cruising or racing boats.First gear is selected by depressing the nameplate ring next to the winch handle socket. Use first gear for fast sheet trimming in light to moderate air, or ignore first gear in very heavy conditions. Coupled with Harken's large drum diameters, three-speed self-tailing winches offer very high line speeds for racing or fast cruising.
By special order, the B74.3 can be provided with power ratios of 85:1 or 92:1 for use on high loads such as found on very large boats or multihulls.
All large three-speed winches offer drums supported by ball bearings, two gears driving the drum, 17-4 PH stainless shaft pins, and roller bearings on all gears.
Use For:
 B74.3STC |
|
Ordering Information:
Specify winch drum material by adding A (aluminum), B (polished bronze), or C (chromed bronze) to part number. Polished bronze by special order only.
 B56.3STA |
 B64.3STC |
 B66.3STA |
| Part No. | Gear ratio | Power ratio | Fastener circle | Fasteners (FH) | ||||||
| 1 | 2 | 3 | 1 | 2 | 3 | in | mm | in | mm | |
| B56.3ST | 2.2:1 | 5:1 | 13:1 | 9:1 | 21:1 | 56:1 | 711/16 | 195 | 6 x 5/16 | 6x8 |
| B64.3ST | 2.3:1 | 5.7:1 | 16.5:1 | 9:1 | 22.5:1 | 64:1 | 81/4 | 210 | 5 x 3/8 | 5x10 |
| B66.3ST | 2.8:1 | 7.3:1 | 20:1 | 9.3:1 | 25:1 | 66:1 | 87/8 | 225 | 6 x 3/8 | 6x10 |
| B74.3ST | 2.8:1 | 7.3:1 | 22:1 | 9.3:1 | 25:1 | 74:1 | 87/8 | 225 | 6 x 3/8 | 6x10 |
| Part No. |  |
Height | Weight | Line |
Line entry height (LE) | |||||||||||
| Drum | Base | Aluminum | Chrome | Min | Max | |||||||||||
| in | mm | in | mm | in | mm | Ib | kg | Ib | kg | in | mm | in | mm | in | mm | |
| B56.3ST | 43/4 | 120 | 87/8 | 225 | 105/8 | 270 | 34 | 15.4 | 40.8 | 18.5 | 5/16 | 8 | 5/8 | 16 | 415/16 | 125 |
| B64.3ST | 51/8 | 130 | 95/8 | 245 | 1113/16 | 300 | 48.7 | 22.1 | 58.4 | 26.5 | 5/16 | 8 | 3/4 | 18 | 57/8 | 150 |
| B66.3ST | 57/8 | 150 | 107/16 | 265 | 1113/16 | 300 | 59.7 | 27.1 | 70.3 | 31.9 | 3/8 | 10 | 13/16 | 21 | 57/8 | 150 |
| B74.3ST | 57/8 | 150 | 107/16 | 265 | 1113/16 | 300 | 60.4 | 27.4 | 72 | 32.7 | 3/8 | 10 | 13/16 | 21 | 57/8 | 150 |
Use Chart | Standart | One-, Two-, & Three Speed | Self-Tailing | Three-Speed Self-Tailing | Wide-Body Self-Tailing | Stainless Steel | Powered | Electric | Hydraulic | Hydraulic Power Units | Control Boxes Circuit Breakers, & Switches | Racing Features | Quattro | Two-Speed Self-Tailing Racing | Three-Speed & Three- Speed Self-Tailing Racing | Wide-Body Three-Speed Top-Cleating Racing | Large Wide-Body Multi- Speed Racing | Large Wide-Body Self- Tailing Racing | Pedestals & Accessories | Drive Components | 2003 AC Winch Systems | SeepdGrip Handles | Ball Bearing Handles | Service Kits