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DESCRIPTION

The Carbo Ratchamatic® is a load-sensing ratchet block that rolls freely in both directions under low loads and automatically engages the ratchet as loads increase. Shifting between ratchet and light-air modes is seamless. Use the 2634 with a 402 or 403 swivel arm for a versatile two-speed mainsheet system.

Our Part # HAR2634 | Mfr. Part # 2634

FEATURES

  • 57mm Carbo Ratchamatic double block.
  • Automatic ratcheting engages under load.
  • Lightweight, strong Carbo composite construction.
  • Standard grip for controlled sheeting.

TECHNICAL INFORMATION

DescriptionImperialMetric
Sheave Ø2 1/4 in57.0 mm
Length4 9/16 in116.0 mm
Weight7.2 oz204.0 g
Shackle Pin1/4 in6.0 mm
Maximun line Ø3/8 in10.0 mm
Maximum working load750.0 lb340.0 kg
Breaking Load1876.5 lb851.0 kg
Holding power10: 1

KNOWLEDGE BASE

Harken Cam Swivel Bases — InstructionsSpecs and operation for the Harken Cam Swivel Bases, by Harken part number.View Manual →
Harken 57 mm and 75 mm Carbo Ratchamatic Blocks — InstructionsSpecs, operation, mounting and maintenance for the Harken 57 mm and 75 mm Carbo Ratchamatic Blocks, by Harken part number.View Manual →
Harken Mainsheet System Selection GuidePick a Harken mainsheet system by purchase and boat size: 4:1 to 8:1 tackles, gross/fine cascades, dedicated-winch.View Selection Guide →