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:
SailRACE
Harken 125 mm Block Sock
- Regular price
- ¥8,700
- Sale price
- ¥8,700
- Regular price
- ¥10,000
Harken 75 mm Runner Block — Becket
SKU:HKN-3239
Vendor:
SailRACE
Harken 75 mm Runner Block — Becket
- Regular price
- ¥119,300
- Sale price
- ¥119,300
- Regular price
- ¥137,100
Harken 150 mm Runner Block — Becket
SKU:HKN-3265
Vendor:
SailRACE
Harken 150 mm Runner Block — Becket
- Regular price
- ¥549,700
- Sale price
- ¥549,700
- Regular price
- ¥631,800
Harken 150 mm Runner Block
SKU:HKN-3264
Vendor:
SailRACE
Harken 150 mm Runner Block
- Regular price
- ¥425,900
- Sale price
- ¥425,900
- Regular price
- ¥489,600
Harken 125 mm Runner Block
SKU:HKN-3259
Vendor:
SailRACE
Harken 125 mm Runner Block
- Regular price
- ¥236,500
- Sale price
- ¥236,500
- Regular price
- ¥271,900
Harken 100 mm Runner Block — Becket
SKU:HKN-3252
Vendor:
SailRACE
Harken 100 mm Runner Block — Becket
- Regular price
- ¥182,600
- Sale price
- ¥182,600
- Regular price
- ¥209,800
