Harken 125mm Aluminum Standup Block
Shipping and Delivery
Enjoy free shipping on qualifying orders of $145 or more delivered within the 48 contiguous United States. Alaska, Hawaii, Puerto Rico, and other U.S. territories are excluded.
Delivery for qualifying free-shipping orders takes 8 to 10 business days.
Free shipping does not apply to:
- Orders containing only clearance items
- Customized special orders made to your detailed requirements
- Sails and boats
- Long tracks, spinnaker poles, whisker poles, and large tubes
- Oversized or heavy items, including items that require less-than-truckload (LTL) freight shipping
Standard Shipping
- UPS and FedEx Ground: Delivery usually takes 2 to 5 business days for in-stock orders.
- USPS: Allow an additional 3 business days beyond the standard shipping time.
- Saturday delivery: UPS and FedEx deliver on Saturdays only for overnight shipments sent on Friday. Additional charges may apply.
Oversized Items and Freight Shipping
Oversized items, such as whisker poles, spinnaker poles, and tracks longer than 8 feet, require freight shipping. The estimated shipping cost is $500, depending on the destination.
For freight deliveries, provide a commercial address, such as the marina, yacht club, or boatyard where your sailboat is located. The recipient must sign for the shipment upon delivery.
International Orders
International customers are responsible for all applicable import duties, fees, and taxes.
Harken 125mm Aluminum Standup Block
Harken 125mm Aluminum Standup Block
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. Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Technical Description
| Sheave (mm) | 125 mm |
| Sheave (in) | 4 15/16 in |
| Length (mm) | 230 mm |
| Length (in) | 9 1/16 in |
| Width (mm) | 127.5 mm |
| Width (in) | 5 1/32 in |
| Weight (g) | 1262 g |
| Weight (oz) | 44.72 oz |
| Maximum line (mm) | 19 mm |
| Maximum line (in) | 3/4 in |
| Maximum working load (kg) | 4990 kg |
| Maximum working load (lb) | 11000 lb |
| Breaking load (kg) | 9979 kg |
| Breaking load (lb) | 22000 lb |
| Includes | Includes padeye. Uses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles. |
| A (mm) | 93 mm |
| A (in) | 3 21/32 in |
| B (mm) | 106 mm |
| B (in) | 4 3/16 in |
| C (mm) | 57 mm |
| C (in) | 2 1/4 in |
Harken 125mm Aluminum Standup Block
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. Sideplates and sheaves Hard Lube-anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Technical Description
| Sheave (mm) | 125 mm |
| Sheave (in) | 4 15/16 in |
| Length (mm) | 230 mm |
| Length (in) | 9 1/16 in |
| Width (mm) | 127.5 mm |
| Width (in) | 5 1/32 in |
| Weight (g) | 1262 g |
| Weight (oz) | 44.72 oz |
| Maximum line (mm) | 19 mm |
| Maximum line (in) | 3/4 in |
| Maximum working load (kg) | 4990 kg |
| Maximum working load (lb) | 11000 lb |
| Breaking load (kg) | 9979 kg |
| Breaking load (lb) | 22000 lb |
| Includes | Includes padeye. Uses hole spacing and base dimensions of 648 padeye. Maximum working load decreases at varying angles. |
| A (mm) | 93 mm |
| A (in) | 3 21/32 in |
| B (mm) | 106 mm |
| B (in) | 4 3/16 in |
| C (mm) | 57 mm |
| C (in) | 2 1/4 in |
