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HARKEN

57mm Carbo AirBlocks®

57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL

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Description WM Model# MFG Part# Price Availability QTY
57mm Black Magic AirBlock, Double Swivel, 2,755lb. SWL, 10.1oz. 1975739 1952 Only $226.27 USD Usually ships within 5 to 8 days
57mm Sheave Diameter Block, Flip-Flop Style, 2500lb. SWL 10421972 2142 Only $120.49 USD In Stock
57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL 10421980 2143 Only $178.50 USD In Stock
57mm Sheave Diameter Block, Single/Swivel Style, 792lb. SWL 200027 2600 Only $32.68 USD In Stock
57mm Sheave Diameter Block, Single/Swivel/Becket Style, 792lb. SWL 200043 2601 Only $37.19 USD In Stock
57mm Sheave Diameter Block, Double/Swivel Style, 1,584lb. SWL 200050 2602 Only $69.40 USD Hot Seller. Temporarily out-of-stock. Order Now!
57mm Sheave Diameter Block, Double/Becket Style, 1,584lb. SWL 200068 2603 Only $75.31 USD In Stock
57mm Sheave Diameter Block, Triple/Swivel Style, 1,584lb. SWL 200076 2604 Only $100.22 USD Hot Seller. Temporarily out-of-stock. Order Now!
57mm Sheave Diameter Block, Triple/Swivel/Becket Style, 2,380lb. SWL 200084 2605 Only $103.53 USD In Stock
57mm Sheave Diameter Block, Cheek Style, 792lb. SWL 200092 2606 Only $30.01 USD In Stock
57mm Sheave Diameter Block, Ti-Lite Style, 792lb. SWL 200118 2607 Only $31.15 USD In Stock
57mm Sheave Diameter Block, Single/Swivel/Cam Style, 300lb. SWL 1171800 2615 Only $92.57 USD In Stock
57mm Sheave Diameter Block, Single/Swivel/Becket/Cam Style, 600lb. SWL 1171768 2616 Only $98.77 USD In Stock
57mm Sheave Diameter Block, Triple/Swivel/Cam Style, 1,500lb. SWL 1171685 2617 Only $149.69 USD In Stock
57mm Sheave Diameter Block, Triple/Swivel/Becket/Cam Style, 1,800lb. SWL 1171644 2618 Only $154.28 USD Hot Seller. Temporarily out-of-stock. Order Now!
57mm Sheave Diameter Block, Fiddle Style, 792lb. SWL 2042422 2621 Only $39.57 USD Hot Seller. Temporarily out-of-stock. Order Now!
57mm Sheave Diameter Block, Fiddle/Becket Style, 792lb. SWL 2042455 2622 Only $43.05 USD In Stock
57mm Sheave Diameter Block, Fiddle/Cam Style, 792lb. SWL 2042463 2623 Only $101.32 USD In Stock
57mm Sheave Diameter Block, Fiddle/Becket/Cam Style, 792lb. SWL 2042208 2624 Only $104.81 USD In Stock
57mm Sheave Diameter Block, Single Loop Head, 2,500lb. SWL 10421998 3195 Only $159.80 USD In Stock
 

Over of 57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL  

Overview of 57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL.

From the folks who invented ball bearing blocks, this line of blocks boasts an excellent strength-to-weight ratio. The plastic in their sideplates, sheaves and balls makes them 30% lighter, 60% stronger and generally less expensive than equivalent conventional blocks.

The tiny 29mm block is extremely strong. 29mm doubles and triples feature a U-lock to hold the swivel in the front or side position, or allow it to spin freely. Use the 29mm Carbos as mainsheet blocks on dinghies, or for low-friction applications on any size boat.

Use the 40mm blocks for jib and mainsheet systems on high-performance dinghies, and for high-load control lines on small keelboats. The 40mm blocks handle loads similar to Harken’s 2.25" blocks.

The 57mm blocks have an enormous working range that makes them ideal for main and jib sheets, spinnaker halyards and control lines. This range handles loads similar to Harken’s 3" standard blocks.

The 75mm Carbo Blocks are the only all-plastic blocks with a safe working load over 1,200lb. Because of their large-diameter sheaves and fitted ball races, they release easily under load and keep weight to a minimum. Perfect for mainsheet systems on racing boats and cruisers looking for better performance at a reasonable price. The 75mm single block weighs in at a remarkable 6.9oz. including the shackle, and the double and triple blocks aren’t much more, giving an extremely high strength-to-weight ratio.

  • Harken's most innovative blocks: Recipient of both the Dame Award and Sail Magazine's Freeman-Pittman Award for innovation
  • 30% lighter, 60% stronger than equivalent conventional blocks
  • Larger blocks have an enormous working range
  • Smaller blocks are excellent for jib and mainsheet systems on high-performance dinghies and high-load control lines on small keelboats
  • Sheave: Long-glass reinforced engineered nylon
  • Ball Bearings: Engineered plastic in fitted ball races
  • Sheave Size: 1-1/8" (29mm); 1-9/16" (40mm); 2-1/4" (57mm); 2-15/16" (75mm)
  • Line Diameter: 5/16" (29mm); 3/8" (40mm); 7/16" (57mm); 9/16" (75mm)
  • Cheek Material/Finish: Long-glass reinforced engineered nylon
  • Shackle Strap Type: Stainless swivel shackle
Top Sellers
57mm Black Magic AirBlock, High-Load Strap Head with Becket, 2,500lb. SWL, 3.6oz. from HARKEN
Hi-Load Ti-Lite Car, Torlon Bearings, 850lb. SWL from HARKEN
Spinnaker Pole Car, Track #2720, 900sq.ft. Max. Sail Area, 1125lb. SWL from HARKEN
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57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL
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57mm Sheave Diameter Block, Flip-Flop with Cam, 2500lb. SWL
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