Center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Captive Delrin® ball bearings carry side loads.
Harken Black Magic Air Runners
Runners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recessed cotter key help produce a smooth design that won’t snag lifelines. Foam padded Block Socks easily install over Air Runner blocks to protect your blocks, deck, and crew.
Low-friction efficiency
Harken 125 mm Block Sock
SKU:HKN-3037
Vendor:
Harken
Harken 125 mm Block Sock
- Regular price
- ¥9,100
- Sale price
- ¥9,100
- Regular price
- ¥10,200
Harken 75 mm Block Sock
SKU:HKN-3035
Vendor:
Harken
Harken 75 mm Block Sock
- Regular price
- ¥8,100
- Sale price
- ¥8,100
- Regular price
- ¥9,100
Harken 150 mm Runner Block — Becket
SKU:HKN-3265
Vendor:
Harken
Harken 150 mm Runner Block — Becket
- Regular price
- ¥573,500
- Sale price
- ¥573,500
- Regular price
- ¥644,400
Harken 125 mm Runner Block — Becket
SKU:HKN-3260
Vendor:
Harken
Harken 125 mm Runner Block — Becket
- Regular price
- ¥290,900
- Sale price
- ¥290,900
- Regular price
- ¥326,900
Harken Runner Block
SKU:HKN-3251
Vendor:
Harken
Harken Runner Block
- Regular price
- From ¥95,900
- Sale price
- From ¥95,900
- Regular price
- ¥107,800
Harken 57 mm Runner Block
SKU:HKN-3224
Vendor:
Harken
Harken 57 mm Runner Block
- Regular price
- ¥65,900
- Sale price
- ¥65,900
- Regular price
- ¥74,000
