57mm Carbo Ratchet Block
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)
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|
The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.
Related West Advisor Articles
FREE DELIVERY to West Marine Stores
- Available for ALL products including hazardous & truck freight items.
- Ship to over 240 U.S. store locations.
- Contiguous United States orders arrive in 7 - 10 days.
- Hawaii and Alaska orders arrive in 10 - 16 days.
- Expedited shipping is available for an additional fee.
- Not available in Puerto Rico.
FREE SHIPPING on Orders over $49.00
- Applicable on orders over $49.00 within the 48 contiguous United States.
- Does not apply to Truck Freight.
- No coupon code required.
- Orders will be delivered within 3 - 7 business days.
We stand behind everything we sell. If at any time your West Marine purchase does not meet your expectations, you can return it for a replacement or refund. If you are a West Advantage Rewards member, you don't even need a receipt - we'll have a record of your purchase. Returns can be made via mail or in person at their nearest store location. If you are not a West Advantage Rewards member, we will first need to verify your purchase by receipt or other method.
We do carry a few items that cannot be returned. This includes: items with expiration dates that have expired such as flares, charts, annual publications; items registered to the user such as boats, motors, EPIRBs, PLBs, SPOT, Class B AIS, life rafts; customized items such as rigging, and boat covers, computer software and electronics charts. Other non-returnable items include carry-on air conditioners, generators and select electronics. We will help you contact the vendor for assistance or repair on product that cannot be returned to West Marine. Items containing hazardous material may only be returned to a West Marine store.
For additional inquiries, you may call Customer Service at 1-800-BOATING (262-8464).