Description
Harken 57mm-150mm Black Magic Air Single Blocks are a top favourite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A centre cage keeps Torlon® roller bearings separated and parallel to reduce friction. The sheave centre carries primary load, allowing a smaller, lighter weight block. The soft-attachment Loop block has a removable dead-end post for attachment to a padeye. Lashings can also be used.
Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
| Sku | Name | Sheave Ø mm (in) | Length mm (in) | Width mm (in) | Weight g (oz) | Maximum line Ø mm (in) | Maximum working load kg (lb) | Breaking load kg (lb) | Shackle pin Ø mm (in) |
|---|---|---|---|---|---|---|---|---|---|
| 3215 | 57 mm Black Magic Air Aluminium Block — Swivel | 57 (2 1/4) | 119 (4 11/16) | 152 (5.36) | 12 (7/16) | 1134 (2500) | 2268 (5000) | 6 (1/4) | |
| 3231 | 75 mm Black Magic Air Aluminium Block — Swivel | 75 (2 15/16) | 129 (5 1/8) | 331 (11.68) | 14 (9/16) | 2268 (5000) | 4536 (10000) | 8 (5/16) | |
| 3246 | 100 mm Black Magic Air Aluminium Block — Swivel | 100 (3 15/16) | 203 (8) | 623 (21.98) | 16 (5/8) | 3402 (7500) | 6804 (15000) | 10 (3/8) | |
| 3256 | 125 mm Black Magic Air Aluminium Block — Swivel | 125 (4 15/16) | 254 (10) | 127.5 (5) | 1058 (37.31) | 19 (3/4) | 4990 (11000) | 9979 (22000) | 12 (1/2) |
| 3262 | 150 mm Black Magic Air Aluminium Block — Swivel | 150 (5 15/16) | 305 (12) | 153 (6 1/32) | 1840 (64.9) | 25 (1) | 6804 (15000) | 13608 (30000) | 16 (5/8) |
