Harken Black Magic Aluminum Loop Block

Harken Black Magic Air aluminum loop block is designed for high-performance racing and cruising sail control applications that require lightweight high-load operation. The sheave-center load design reduces overall block weight while Torlon® roller bearings support smooth low-friction performance under extreme loads.

Features:

• Designed for mainsheet, runner, halyard, and spinnaker control systems
• Center cage keeps Torlon® roller bearings separated and parallel to reduce friction
• Sheave-center load design allows a smaller and lighter weight block construction
• Soft-attachment loop design supports lightweight rigging configurations
• Removable deadend post allows attachment to a padeye
• Compatible with lashing attachment methods
• Lightweight aluminum construction supports high-performance sail handling

Specifications:

• 45 mm (1 3/4") Model:
  • Length: 63 mm (2 1/2")
  • Maximum Line Diameter: 10 mm (3/8")
  • Maximum Working Load: 750 kg (1653 lbs)
  • Breaking Load: 1500 kg (3306 lbs)
  • Weight: 57 g (2.01 oz)
• 57 mm (2 1/4") Model:
  • Length: 76 mm (3")
  • Maximum Line Diameter: 12 mm (7/16")
  • Maximum Working Load: 1134 kg (2500 lbs)
  • Breaking Load: 2268 kg (5000 lbs)
  • Weight: 92 g (3.23 oz)
• 75 mm (2 15/16") Model:
  • Length: 100 mm (3 15/16")
  • Maximum Line Diameter: 14 mm (9/16")
  • Maximum Working Load: 2268 kg (5000 lbs)
  • Breaking Load: 4536 kg (10000 lbs)
  • Weight: 209 g (7.36 oz)
• 100 mm (3 15/16") Model:
  • Length: 128 mm (5 1/16")
  • Maximum Line Diameter: 16 mm (5/8")
  • Maximum Working Load: 3402 kg (7500 lbs)
  • Breaking Load: 6804 kg (15000 lbs)
  • Weight: 371 g (13.09 oz)

Owner's Manual (4.80 MB)