HARKEN–57mm Carbo Ratchet Block
57mm Carbo Ratchet Block
|Diameter||3/8 Inch or 10 mm|
|Integral Cleat||No Integral Cleat|
|Length||4 1/16 Inches|
|Mount Type||Swivel Shackle|
|Safe Working Load||500 Pounds|
|Sheave Diameter||57 mm|
Harken 57mm Carbo Ratchet Block with eight facet sheaves for a 10:1 purchase advantage.
Carbo Ratchets blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. Lightweight Carbo Ratchets are available in 40mm, 57mm and 75mm sizes. All the Carbo Ratchets feature a recessed On-Off switch that is easily operated from either side. The 40mm cam-arm versions work in ratchet mode only. Commonly 57mm carbo ratchet blocks are for jibsheets and spinnakers on medium dinghies.
The 40mm, 57mm and 75mm Carbo Ratchamatic® is adjustable for many applications and weather conditions. The load-sensing ratchet block rolls freely in both directions under low loads, then engages the ratchet automatically as loads increase. With 180 degree wrap, you get a 10:1 holding power.
- Hand-hold your loaded lines
- Use for spinnaker sheet systems on dinghies, sportsboats, and medium keelboats
- Ratchet blocks are hand and crew savers
- Allows a line to be eased instantly with control
- On/Off switch allows the ratchet to be turned off in light air
- Hardkote-anodized aluminum sheaves
- Stainless steel swivel shackle
- Sheave Diameter: 2 1/4" (57 mm)
- Max. Line Diameter: 3/8" (10 mm)
- Max. Working Load (MWL): 500 lb. (227 kg)
- Breaking Load: 2000 lb. (907 kg)
- Weight: 3 oz. (85 g)
- Length: 4 1/16" (103 mm)
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