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HARKEN
57mm Carbo Ratchamatic Blocks

Control loaded lines with ease

The 57mm Carbo Ratchamatic blocks are adjustable for use in many applications and weather conditions. This 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. Great for asymmetrical spinnakers when you need tough holding power and a quick release.

 

  • Sheave: Hardkote anodized eight-sided aluminum
  • Sheave Size: 2 1/4" (57mm)
  • Ball Bearings: Engineered plastic in fitted ball races
  • Line Diameter: 3/8"
  • Cheek Material/Finish: Long-glass reinforced engineered nylon
  • Shackle/Strap Type: Stainless swivel shackle
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
57mm Carbo Ratchamatic Block, Flip-Flop, 500lb. SWL, 5.5oz. 9485723 2144
In stock online.

Reg. $187.09

Save $17.01

$170.08

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57mm Carbo Ratchamatic Block, Flip-Flop with Cam, 300lb. SWL, 12.0oz. 9485731 2145
Delivery within 2 - 3 weeks.

Reg. $260.70

Save $23.70

$237.00

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57mm Carbo Ratchamatic Block, 500lb. SWL, 3.7oz. 2640043 2625
In stock online.

Reg. $90.38

Save $8.22

$82.16

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57mm Carbo Ratchamatic Block with Becket, 500lb. SWL, 4.0oz. 2640142 2626
In stock online.

Reg. $95.13

Save $8.65

$86.48

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57mm Carbo Ratchamatic Block with Cam, 300lb. SWL, 9.4oz. 6580369 2627
In stock online.

Reg. $166.54

Save $15.14

$151.40

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57mm Carbo Ratchamatic Block with Becket & Cam, 600lb. SWL, 9.7oz. 3771250 2628
In stock online.

Reg. $171.29

Save $15.57

$155.72

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57mm Carbo Ratchamatic Block, Triple with Cam, 1,500lb. SWL, 14.9oz. 2640175 2629
Delivery within 2 - 3 weeks.

Reg. $258.24

Save $23.48

$234.76

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57mm Carbo Ratchamatic Block, Cheek, 500lb. SWL, 3.1oz. 3732500 2633
In stock online.

Reg. $92.80

Save $8.44

$84.36

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57mm Carbo Ratchamatic Block, Double, 750lb. SWL, 7.2oz. 10616449 2634
In stock online.

Reg. $241.78

Save $21.98

$219.80

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Product Description

Control loaded lines with ease

The 57mm Carbo Ratchamatic blocks are adjustable for use in many applications and weather conditions. This 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. Great for asymmetrical spinnakers when you need tough holding power and a quick release.

 

  • Sheave: Hardkote anodized eight-sided aluminum
  • Sheave Size: 2 1/4" (57mm)
  • Ball Bearings: Engineered plastic in fitted ball races
  • Line Diameter: 3/8"
  • Cheek Material/Finish: Long-glass reinforced engineered nylon
  • Shackle/Strap Type: Stainless swivel shackle

Specs

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REVIEW SNAPSHOT®

by PowerReviews
Harken57mm Carbo Ratchamatic Blocks
 
4.0

(based on 1 review)

Ratings Distribution

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Reviewed by 1 customer

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4.0

Sheeting in used to be hard

By Coppertop

from Lake Arrowhead, CA

Verified Buyer

Comments about 57mm Carbo Ratchamatic Blocks:

I am a 46 female novice racing an MC Scow. This block has made sheeting in and holding my main so much easier! My arms used to ache after racing. Now I am able to now get my blocks to meet without straining. I only wish that the swivel lock would stay locked. I currently have it aft, with the mainsheet directed down to a lower block. Perhaps if I rotated the swivel, the main wouldn't contact it as much and inadvertently unlock it. None the less, I still wouldn't change it out...I love this ratchamatic!

  • Was this a gift?:
  • No

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