HARKEN
57mm Carbo Ratchamatic Single Block with Cam

$171.99

+
Ships directly from the vendor
Add to My List
Model # 6580369 | Mfg # 2627 | UPC # 97653113331

Harken 57mm Carbo Ratchamatic Single Block with Cam arms can be locked in more than five positions for fair leads.

Carbo Ratchets 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 blocks are for jibsheets and spinnakers on medium sized 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. 

Key Features

  • Eight-facet sheave holds line securely
  • Ratchet Ratchamatic® 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): 300 lb. (136 kg)   
  • Breaking Load: 750 lb. (340 kg)
  • Weight: 9.4 oz. (266 g)
  • Length: 4 1/16" (103 mm)

Specs

57mm Carbo Ratchamatic Single Block with Cam

Name Value
Ball Bearings Plastic
Becket No Becket
Diameter 3/8 Inch or 10 mm
Direction Any
Integral Cleat Integral Cam
Length 4 1/16 Inches
Mount Type Swivel Shackle
Ratchet Ratcheting
Safe Working Load 300 Pounds
Sheave Diameter 57 mm
Type Single
Weight 9.4 Ounces

Advice

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.

Reviews

Product Q & A

Shipping

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.

Returns

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.

We do carry a few items that cannot be returned: 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, electronics charts, and carry-on air conditioners. For electronics we will help you contact the vendor for assistance or repair. If you are not a West Advantage Rewards member, we will first need to verify your purchase by receipt or other method.

Hazard Shipping

Standard Shipping (ground service) is used to ship items that are considered hazardous. Estimated delivery is 3 – 7 business days and only applicable on deliveries within the contiguous United States. Signature Required for receipt of shipment.

For additional inquiries, you may call Customer Service at 1-800-BOATING (262-8464)

RETURN TO TOP