57 mm Blocks

Use 57mm Black Magic® Airblocks® on offshore boats. These strong, lightweight blocks are sculpted aluminum, with Torlon® rollers and carbon-black balls for strength and UV protection. Rollers are housed in a unique center cage and are insolated for less friction. Blocks feature a three -way heda system and come in high-and low-load configurations.

75 mm Block

75mm Harken Black Magic® Airblocks® feature Torlon roller bearings and carbon-black balls for strength and reduced wear. The unique center cage separates rollers for less friction andsideload ball bearings are protected by sculpted aluminum sideplates. Dissimilar metals are insolated to minimize corrosion. Low-load blocks use Delrin® rollers and type 316 stainless steel shackles. Like all Airblocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single Allen wrench.

Read About Harken 75mm ESP Fiddle Block | Harken Straphead Double Block

100 mm Blocks

100mm Black Magic® Airblocks® are used on offshore boats where weight and performance are critical. They feature free-rolling, large-diameter aluminum sheaves bwith Torlon® roller bearings housed in a unique center cage. UV-resistant, carbon-black Delrin® balls carry sideloads. Corrosion is minimized by isolating dissimilar metals. Blocks are Hardkote- anodized and have 17-4 OH satinless headposts and shackles. Easily disassembled.

125 & 150 mm Blocks

125mm and 150mm AirBlocks® feature Torlon® rollers in a self- contained center cage. Rollers stay parallel for low-friction efficiency. UV- resistant, carbon-black Delrin® balls carry sideloads. Used on offshore boats, these blocks offer a no "climbout" deep groove sheave with radiused edges to protect line. Sculpted aluminum sideplates and thin-profile sheaves make these blocks very lightweight. No stainless-to-aluminum contact prevents corrosion.

Air Runners

Black Magic® Air Runners® are strong, lightweight blocks with extremely free-rolling sheaves. Blocks feature Torlon® roller bearings in a center cage for strength. Sideload bearing strips dampen rig vibration. Integral sideplate bails and recessed cotter key help produce smooth design that won't snag lifelines.

Heads are offered with parallel/perpendicular shackles. Tangs attach turnbuckles, toggles, and other fittings No tools required for installation. Foam padded Block Socks easily install over Air Runners® to protect your blocks, deck, and crew.

Crossover

Crossover blocks provide a cleaner, more efficient deck. These easy-to-install blocks mount behind the stopper bank on each side of the cabin house and can route any line to the winch on the opposite side. Use the 1984 for boats to 38 ft (11.5m) and the 1981 for boats to 48 ft (15m).

Footblocks

Black Magic® footblocks carry some of the highest loads imposed by running rigging. The Torlon® rollers on these lightweight, free-running blocks are housed in a center cage, with no contact between bearings. UV-resistant, carbon-black Delrin® balls handle sideloads. Either metric or imperial flathead fasteners may be used for mounting and are not exposed.

Opening Footblocks

Opening footblocks feature a spring-loaded back for fast one-hand sheet changes. Housings are hard-anodized aluminum, and the large-diameter sheaves protect sheets and reduce friction. Opening footblocks can be dismantled while attached to the deck. Use on boats from 20 ft to 50 ft (6 to 15m).

Mastbase Halyard Lead & Flip-Flop Blocks

Low-profile mastbase halyard lead blocks are lightweight and can be grouped in a small area at the mastbase. Flared cheeks prevent chafe on the halyards. Over-the-top blocks lead lines aft over cabin houses, coamings, and splashguards. They feature high-load sheaves and come in single, double, and triple configurations.

The high-load flip-flop blocks pivot around the line axis to keep line close to the deck. Hinged construction allows variable leads. Lockoff provides a temporary stop to free up winches.

Snatch Blocks

Harken® Snatch blocks feature low-friction roller/ball bearing sheaves and a unique push-button latch for onehanded operation. The opening side allows sheets to be inserted without reeving. Urethane sideplates prevent damage todecks, spars, and cabin houses. An integral bail allows blocks to hang from lifelines with shockcordd. Snap shackles attach to toerails and other fixtures.

Snatch blocks are offered in high-load and low-load configuration and are used on offshore boats of all sizes.

Teadrop Blocks

Teardrop blocks are ideal for use as mastbase leads and for other aplications where limited articulation or direct attachment is desired. When attached to an appropriate padeye. Teardrop blocks will not hit the deck when line are slack, yet allow sufficient movement to ensure fair leadswhen jumping halyards. They are often used on permanent backstays of fractionally rigged boats where the backstay can be spliced directly to the head of the head of the block.

The 3042 and 3046 are low-load blocks designed for use on production boats that have mounting posts on the mastcollar.

Stainless Steel Blocks

Hand-polished stainless steel sipeplates are the trade-mark of these beautiful blocks. But it's the sheave design that gives them their strength and durability. Sheaves use a low-friction composite sleeve bearing for extreme radical loads. Ball bearings handle side loads. This proven sheave design is used in superyatchs where blocks most perform under very high, sustained loads without being excessive in size.

Block details include low-profile screw adapters and stainless-on-stainless constructions for easy service. Sheaves on footblocks remove without unbolting the block. Headposts on swivel blocks lock or swivel freely.

Stainless Steel Runners

Harken® stainless steel runner blocks feature computer-designed sideplates, and sheaves with high-load composite/ball combination bearings. Heads are offered with parallel/perpendicular shackles. Tangs attach turnbuckles , toogles, and other fittings.

ESP Blocks

ESP ( Elegant Simple Products) is a line of hardware that complement Harken existing blocks in looks and function, but is simpler in design and construction. Sheaves feature axle bearings to handle high static loads, and are ideal for halyards or limited purchase systems on cruising boats.
ESP Footblocks Use for reef lines and genoa sheets where the angle is not extreme.

ESP Mastbase Use teardrop-shaped blocks for direct attachment to padeyes or mast collar posts to keep lines extremely close to the deck. Use the 6050 and 6056 on production boats with mounting posts on the mast collar. The 6057 and 6065 padeye-mounted blocks have hourglass- shaped head spacers to seat on the padeye bale.

Use swivel and fiddle blocks in winch-driven purchases of 4:1 or less. Shackles lock at 90-degree intervals or swivels freely. Perfect for vangs or mainsheet systems on cruising boats from 35 ft to 45 ft (10 to 14 m).

Stainless Steel ESP Blocks

Add dazzle to your boat with elegant stainless steel blocks. Sideplates are polished to a high luster to reflect your boat's beauty, whether it's classic wood, or a modern cruiser. ESP sheaves feature axle bearings to handle high, static loads and sideload balls so sheaves spin freely when loads are released. They are perfect for halyards or limited purchase systems on cruising boats. ESP blocks are easy to install. Footblocks and deck organizers can be double stacked.

Teardrop blocks keep lines close to the deck and are usedfor mast collars with integral swivel posts. Perforated mast collars, or mastbase situations where the lead may change, require swivel blocks. Footblocks are available with lockoffs to temporarily secure sheets. A single block works for either port or starboard applications by flipping it over.

Use ESP swivel and fiddle blocks in winch-driven purchases of 4:1 or less. Perfect for vangs or mainsheet systems on cruising boats from 35 ft to 45 ft (10 to14m).