Viewing 5 items in Harken Ball Bearing Blocks

The 16 mm is Harken?s? smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113 kg) safe working load the highest on the market compared to similarly sized blocks. The 442 uses a spacer and the 404 uses an O-ring to keep the line in the sheave during intermitte...more

Low-friction Micro blocks are compact and lightweight. They are ideal for sailboards, smaller dinghies, and lightly loaded control lines on boats of all sizes. Micro block sheaves run exclusively on ball bearing systems for fast trim and release under any load. Delrin? ball bearings and sideplates are UV stabilized with carbon black for maximum protection. Stainless steel sideplates add strength. ...more

The compact 29 mm Carbo is extremely strong. Use our miniature Carbo as a mainsheet block on small dinghies such as the Optimist, or for low-friction control blocks on any size boat. Doubles and triples feature U-Locks to hold the swivel in front/side position, or to let it spin freely. The triple?s compact cam arm supports high-load purchases of 5:1 or 6:1. The line-shedding cheek block features ...more

Carbo AirBlocks? are 60% stronger and 30% lighter than Harken Classic blocks. Use the 40 mm Carbo for jib and mainsheet systems on high-performance dinghies and for loaded control lines on small keelboats. The nylon-resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Sheaves spin on high-load ball bearings with fitted races for low-f...more

Carbo AirBlocks? are 60% stronger and 30% lighter than Harken Classic blocks. The nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection. Blocks feature Cam-Lock or U-Lock locking systems to lock the shackle in front or side positions,...more