Ball bearing swivel bases feature dual rows of Delrin® ball bearings that swivel freely even under high loads. Bases include stand-up springs and a U-adaptor to accept a variety of appropriate blocks.
The 144 is the standard configuration with a tall arm. It is ideal for mounting in the cockpit or for use on larger keelboats and small offshore boats that use 3.00 in (76 mm) plastic blocks.
The 9051 adjustable cam swivel base with 468 Micro Cam-Matic cleat provides precise cleating. The cleating angle adjusts infinitely in a 5-17 degree range up and down for optimal line lead. The 16 mm sheaves feature low-friction stainless steel ball bearings to handle high loads, ideal for controls where cleating angles change dramatically.
This Cam Base replaces the Harken 462
| Specifications | Micro | Standard | Offshore |
| Height (mm) | 60 mm | 146 mm | 151 mm |
| Weight (g) | 173 g | 369 g | 652 g |
| Minimum line Ø (mm) | 3 mm | 3 mm | 6 mm |
| Maximum line Ø (mm) | 6 mm | 12 mm | 16 mm |
| Fastener spacing (mm) | 26 mm | 19 mm | 27 mm |
| Fasteners (mm) | M5 mm | 5 FH mm | 6 FH mm |
| Maximum working load | 91 kg | 91 kg | 105 kg |
| Compatible blocks | Micro - 40mm | 57mm - 75mm | Midrange |
