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Harken, Inc.
Harken 57mm Single Black Magic Aluminum Block with Swivel - 3215
Harken 57mm Single Black Magic Aluminum Block with Swivel - 3215
57mm Swivel Roller Bearing Pulley (High-Load)
SKU:H3215
MSRP
Regular price
$229.95 USD
Regular price
MSRP:$261.40 USD
Sale price
$229.95 USD
Unit price
/
per
Shipping calculated at checkout.
- Quantities are subject to availability. We will confirm stock before processing your order. If an item is unavailable, we may suggest a substitute or drop ship the product to you. You are welcome to cancel at no charge if substitution/drop shipping does not suit your needs.
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Black Magic Air blocks are a top favorite 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 center cage keeps Torlon roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep line from twisting. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
The Black Magic Single Pulley has a central Torlon Roller Bearing as well as a Delrin Ball Bearing race for side loads. Anodized aluminum side plates and sheave provide durability. High load capacity
Sheave ⌀ : 2-1/4”
(57 mm)
Weight: 5.3 oz (152 g)
Max Line ⌀ : 7/16” (12 mm)
Max Working Load: 2500 lbs (1134 kgs)
Breaking Load: 5000 lbs (2268 kgs)
Shackle Pin ⌀ : 1/4” (6 mm)
Weight: 5.3 oz (152 g)
Max Line ⌀ : 7/16” (12 mm)
Max Working Load: 2500 lbs (1134 kgs)
Breaking Load: 5000 lbs (2268 kgs)
Shackle Pin ⌀ : 1/4” (6 mm)
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