57mm Aluminum Low Load Black Magic Block with Swivel
Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free-running, powerful performers are used for sail controls that see lots of action: mainsheet, runner, halyard, and spinnaker systems. A center cage keeps Torlon® roller bearings separated and parallel to reduce friction. Shackle blocks lock in two directions or swivel to keep the line from twisting. Low-load blocks have red isolators. They use Torlon® rollers and 316 stainless steel shackles. Standard blocks have 17-4 PH stainless head posts. Torlon is a registered trademark of Solvay Advanced Polymers L.L.C.
Specifications:
- Sheave: 57mm/2-1/4in
- Length: 119mm/4-11/16in
- Weight: 154g/5.44oz
- Shackle Pin: 6mm/1/4in
- Maximum Line: 12mm / 7/16in
- Maximum Working Load: 7/16kg / 1655lbs
- Breaking Load: 1500kg / 3300lb
| Weight | 0.35 g |
|---|---|
| Dimensions | 7 × 3 × 1 cm |
Brand
Harken
No accessories available for this product.
No literature available for this product.
No videos available for this product.
Related products
Sailing > Blocks
Series 30 Fiddle Block – Narrow with Tube Rivet Head Features: Lightweight durable construction Economical Maintenance free Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance Applications: Vang, cunningham and trapeze retriever systems [...]
Sailing > Blocks
Ronstan Wire Block – Ferrule Top w/Removable Nylontron® Sheave – 45mm (1-34/”) Sheave Diameter
Wire Block – Ferrule Top w/Removable Nylatron® Sheave – 45mm(1-3/4″) Sheave Diamter Wire blocks have purpose designed narrow sheaves and grooves.Removal sheave for easy fitting and without cutting the wire termination Features:Flared cheeks to minimise chafingRemovable sheaves Applications:Wire blocks suit halyards, vang and backstay applications Materials:Grade 316 stainless steel cheeksNylatron® sheave Specifications:Sheave Ø: 45mm(1-3/4″)Max. Cable [...]
Series 30 Fiddle Block – Narrow with Tube Rivet Head & V-Jam Cleat Features: Lightweight durable construction Economical Maintenance free Allows fast, sure cleating of control lines Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase Stainless steel cheeks and Acetal sheaves ensure a long service life with [...]
Sailing > Blocks
Ronstan Race Sheave – Acetal Solid Bearing – 66mm (2-5/8″) OD
Race Sheave – Acetal Ball Bearing – 66mm(2-5/8″) OD Precision moulded Acetal sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. Acetal Sheaves:Choice of bearingsSolid bearing – high strength and durability, utilizing the self-lubricating properties of AcetalU.V. resistant Acetal sheaves
Sailing > Blocks
Series 20 Ball Bearing Block – Swivel Hook Head Features:Low frictionHigh static and dynamic load capacityLightweightLow profile swivelling hook for quick and easy attachmentHook suits rope, stainless steel and webbing fixing pointsPrecision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction Applications:Dinghy control linesDinghy vangsCunninghamsTraveller controls Materials:Stainless [...]
Sailing > Blocks
Ronstan Series 20 Ball Bearing Block – Triple – Becket – Cam Cleat – 2-Axis Shackle Head
Series 20 Ball Bearing Block – Triple – Becket – Cam Cleat – 2-Axis Shackle Head Features:Low frictionHigh static and dynamic load capacityLightweightPrecision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low frictionTwo-Way head can be fixed at 0° or 90° Applications:Dinghy control linesDinghy vangsCunninghamsTraveller controls Materials:Stainless steel [...]
Sailing > Blocks
Ronstan Wire Block – Tubular Rivet Head w/Removable Nylatron® Sheave – 45mm (1-3/4″) Sheave Diameter
Wire Block – Tubular Rivet Head w/Removable Nylatron® Sheave – 45mm(1-3/4″) Sheave Diameter Wire blocks have purpose designed narrow sheaves and grooves.Removal sheave for easy fitting and without cutting the wire termination Features:Flared cheeks to minimise chafingRemovable sheaves Applications:Wire blocks suit halyards, vang and backstay applications Materials:Grade 316 stainless steel cheeksNylatron® sheave Specifications:Sheave Ø: 45mm(1-3/4″)Max. [...]
Sailing > Blocks
Ronstan Series 20 Ball Bearing Block – Single – Cheek Rivet Mount
Series 20 Ball Bearing Block – Single – Cheek Rivet Mount Features:Low frictionHigh static and dynamic load capacityLightweightSuitable for screw or pop rivet mountingPrecision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction Applications:Dinghy control linesDinghy VangsCunninghamsTraveller controls Materials:U.V. Stabilized Acetal sheavesStainless steel ball bearingsGrade 316 stainless [...]