Harken 3227 57mm Single Black Magic High-Load Stand-Up Block
HARKEN 3227
Black Magic® Stand-Up AirBlock® - 57mm NEW!
The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.
Used on offshore boats, this strong, lightweight block features high-load Torlon® roller bearings for a high strength-to-weight ratio and reduced wear. Rollers are housed in a center cage and stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum side plates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion.
Use for:
Specifications:
Black Magic® Stand-Up AirBlock® - 57mm NEW!
The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same.
Used on offshore boats, this strong, lightweight block features high-load Torlon® roller bearings for a high strength-to-weight ratio and reduced wear. Rollers are housed in a center cage and stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum side plates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion.
Use for:
- Sheets
- Halyards
- Running backstays
Specifications:
- Sheave Diameter - 57mm (2-1/4")
- Max Line Diameter - 7/16" (12mm)
| Mfg No. | Description | Length | Shackle Pin Diameter |
Max Working Load |
Breaking Load |
Weight |
| 3227 | Stand-Up* | 4-1/2" (114mm) |
1/4" (6mm) |
2500 Lbs (1134kg) |
5000 Lbs (2268kg) |
7.04 oz. (200g) |
Harken 3227 57mm Single Black Magic High-Load Stand-Up Block
Sale price$382.95
Regular price$435.00
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Harken 3227 57mm Single Black Magic High-Load Stand-Up Block
Sale price$382.95
Regular price$435.00