Harken Carbo Power3 Ratchamatic Block with Swivel

The Power3 Ratchamatic Blocks with swivel are designed to provide automatic load-responsive ratcheting with multiple grip levels for controlled trimming and easing in varying wind and sea conditions.

Features:

• Load-sensing ratchet automatically engages under increased loads
• Free-rolling operation under light loads helps improve trimming performance
• Seamless transition between ratchet and light-air modes
• Power3 design offers multiple holding power options for different sailing conditions
• Swivel configuration supports flexible line alignment

Specifications:

• 57 mm (2 1/4") Models:
  • Length: 103 mm (4 1/16")
  • Weight: 104 g (3.7 oz)
  • Shackle Pin Diameter: 5 mm (3/16")
  • Maximum Line Diameter: 10 mm (3/8")
  • Maximum Working Load: 227 kg (500 lbs)
  • Breaking Load: 907 kg (2000 lbs)
  • Holding Power:
    • 1.5x Grip: 15:1
    • 2x Grip: 20:1
• 75 mm (2 15/16") Models:
  • Length: 137 mm (5 3/8")
  • Weight: 238 g (8.4 oz)
  • Shackle Pin Diameter: 6 mm (1/4")
  • Maximum Line Diameter: 12 mm (7/16")
  • Maximum Working Load: 341 kg (750 lbs)
  • Breaking Load: 1361 kg (3000 lbs)
  • Holding Power:
    • 1.5x Grip: 22:1
    • 2x Grip: 30:1

Owner's Manual