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Harken 348 29mm Carbo Air Single Block Fixed Head

Manufacturer

Harken

<h3>About Harken: Performance Marine Hardware Since 1967</h3><p><strong>Harken</strong> is one of the most recognized names in performance marine hardware, with a legacy stretching back to 1967. <a href="/14853-harken">Harken</a> was founded in a 60-foot trailer by brothers Peter Harken and Olaf Harken, who set out to engineer better sailboat hardware than anything the market had to offer. Their early breakthrough — the plastic recirculating ball bearing block — redefined how sailors managed lines under load and launched a brand that would go on to dominate competitive sailing at the highest levels.</p><p>Headquartered in Pewaukee, Wisconsin, and with a major manufacturing facility in Limido Comasco, Italy, Harken operates as an employee-owned company with distribution spanning 48 countries. From club racing dinghies to grand prix offshore programs, Harken hardware has been aboard winning boats for decades — making its Olympic and America's Cup debuts in 1976 and 1977, respectively.</p><h3>A Full Range of Marine Hardware</h3><p>Harken's product lineup is broad by design. The company works hard to be the technological leader in sailboat blocks, deck hardware, winches, and hydraulics, as well as safety and rescue equipment and services. Their marine catalog includes small boat and big boat blocks, travelers and genoa leads, mainsail and headsail handling systems, winches, hydraulics, mooring solutions, and a robust line of spare parts and accessories.</p><p>At the core of it all are Harken's renowned <a href="/14853-harken-pulleys-blocks-200822">Pulleys &amp; Blocks</a> — the product category that started it all. Whether you're outfitting a high-tech racing dinghy or a bluewater cruising yacht, Harken blocks are engineered for high-load capacity, corrosion resistance, and the smoothest possible operation. The lineup spans sheave sizes from 16 mm all the way to 75 mm, with single, double, triple, fiddle, and soft-attach configurations to cover virtually every application on deck.</p><p>Beyond sailing, Harken also produces a dedicated line of sportfishing <a href="/14853-harken-pulleys-blocks-202394">Pulleys &amp; Blocks</a> engineered for the unique demands of offshore fishing. These compact, high-load pulleys are built for outrigger systems, dredge rigging, and heavy-duty line management — bringing the same patented bearing technology that excels on race courses to the rigors of the fishing cockpit.</p><h3>Why Sailors Trust Harken</h3><p>What sets Harken apart is a relentless commitment to engineering. Each product category is developed with input from top sailors, sailmakers, and boat designers — and the results speak for themselves on race courses worldwide. Harken hardware is a consistent fixture on America's Cup campaigns, Volvo Ocean Race fleets, Olympic classes, and everything in between. For cruisers, that race-proven performance translates into gear that is more reliable, longer-lasting, and more responsive than the alternatives.</p><ul><li>Employee-owned company with decades of marine engineering expertise</li><li>Manufacturing in the USA and Italy, with global distribution in 48 countries</li><li>Patented bearing systems engineered for high loads and minimal friction</li><li>Product lines covering everything from small dinghies to superyachts</li><li>Trusted at the Olympic Games and America's Cup since the 1970s</li></ul>

Part Number

348
05/31/2036 8:56 PM
Sale Price

$13.64

2 left at this price

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Product Details

The Harken 348 is a 29mm Carbo Air® Single Block with fixed head attachment, designed for high-performance sailing applications where weight savings and strength are critical. This innovative block features fiber-reinforced composite construction that delivers an exceptional strength-to-weight ratio, making it ideal for jib and mainsheet systems on racing dinghies and high-load control lines on small keelboats.

Key Features:

  • Lightweight construction at just 0.8 oz (23 g)—30% lighter than equivalent conventional blocks
  • 60% stronger than comparable classic blocks with 1000 lb breaking load
  • UV-stabilized high-strength resin sideplates for durability
  • Low-friction sheave design for smooth line handling
  • 29mm (1 1/8") sheave diameter optimized for small-diameter racing lines
  • Fixed head attachment with stainless steel swivel shackle
  • Maximum working load: 330 lb (150 kg)
  • Accommodates lines up to 5/16" (8 mm) diameter
  • Compact 1 15/16" (49 mm) length profile

Award-Winning Design:

The Carbo Air® series has earned both the prestigious Dame Award and Sail Magazine's Freeman-Pittman Award for innovation. These blocks represent Harken's commitment to pushing the boundaries of marine hardware engineering, delivering race-proven performance in a compact, reliable package.

Applications:

Perfect for 2:1 or 3:1 purchase systems on performance-oriented sailing vessels. The small footprint and high load capacity make this block an excellent choice for racers seeking every competitive advantage through weight reduction without compromising reliability.

Products specifications

Type

Single

Diameter

5/16 Inch or 8 mm

Length

1 15/16 Inches

Mount Type

Fixed Lashing Eye

Weight

.8 Ounces

Ball Bearings

Plastic

Becket

No Becket

Direction

Any

Integral Cleat

No Integral Cleat

Ratchet

Non Ratcheting

Safe Working Load

330 Pounds

Sheave Diameter

29 mm

its good but needed some more info still not sure if this will work. throw out bearing looks diff. then mine.

Easy to use site! Great pricing and free shipping!

we will see

it was great so far!

Ordering was easy. Good web site. Hope shipping is quick.

Great seller, good selection, super fast shipping!

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