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Series 15 Ball Bearing Utility Block - Triple Block, Becket, Loop Head
Features:
Smallest and lightest ball bearing block available
Precision molded acetal sheave running on stainless steel ball bearings provide high performance & low friction
Single loop head blocks include an O-ring to separate running line from head lashing or fixing
Applications:
Dinghy control lines
Vangs, cunninghams and tweakers
Shock cord tensioning systems
Materials:
BB sheaves: UV stabilized acetal
Ball bearings: Stainless steel
Cheeks: Grade 316 stainless steel
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28.68 |
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Nylatron Sheave Box - Single Upright Lead Block
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverted position, are frequently used as upright leads.
Features:
The external tabs can be formed to fit the spar profile before fastening
Applications:
Typically used in dinghy spars for control lines such as outhauls
Materials:
Nylatron® sheave
Grade 316 stainless steel load housing
Specifications:
Sheave Ø: 22mm(7/8")
Max. Rope Ø: 3mm(1/8")
Max. Cable Ø: 3mm(1/8")
Fastener Ø: 5mm(3/16")
M.W.L.: 160kg(350lbs)
B. L.: 350kg(700lbs)
Weight: 30g(1.1oz)
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22.92 |
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Series 55 Ratchet Orbit Block™ - Single - Swivel Head - Auto & Manual
Automatic Ratchet Block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Awesome Ratchet Block Holding Power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Features:
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
Swivel shackle head for unlimited block rotation.
Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points.
Automatic & manual ratchet block
Applications:
Mainsheet systems and spinnaker sheets on dinghies, sportsboats and small keel boats to 8M(26')
Halyard, vang and backstay applications on boats to 8M(26')
Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks)
Materials:
Sheave: Hard anodised Aluminium
Ball Bearings: High compression strength carbon black Aceetal
Frame/Cheeks: Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
Head fitting: grade 316 stainless steel
Specifications:
Sheave Ø: 55mm(2")
Max. Rope Ø: 10mm(1/2")
M.W.L.: 250kg(550lbs)
B. L.: 650kg(1,430lbs)
Weight: 82g(2.9oz)
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66.78 |
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Series 40 Ball Bearing Block - Triple - Swivel Head
Features:
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Features a swivel shackle head for full 360° rotation
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials:
Acetal ball bearings
UV stabilised Acetal sheave
Grade 316 stainless steel load strap and head fitting
Impact and UV resistant, fiber reinforced Nylon cheeks
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65.08 |
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Series 50 High Load Block - Single - Universal Head
Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.
Features:
Exceptionally high working loads
Lightweight
Cheek cut-outs for easy bearing maintenance
Suitable for both rope or wire
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
Applications:
Mainsheet
Spinnaker sheets
Halyards and other primary applications on boats up to 10M(33')
Materials:
Nylatron® sheave
Grade 316 stainless steel load strap and head fitting
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Specifications:
Sheave Ø: 50mm(2")
Max. Rope Ø: 12mm(1/2")
Max. Cable Ø:5mm(3/16")
Max. Pin Ø: 5mm(3/16")
M.W.L.: 800kg(1,760lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 117g(4.1oz)
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49.79 |
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Series 25 Utility Block™ - Single - Swivel Shackle Head
Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets in the block heads can be fitted with shackles, which can also be used to add a becket for extra purchase.
Features:
Lightweight durable construction
Economical
Maintenance free
Applications:
Vang, cunningham and trapeze retriever systems on dinghies
Leech line tackles, bunk adjusters, etc on larger boats
Materials:
U.V. stabilized acetal sheaves
Grade 316 Stainless Steel cheeks
Specifications:
Sheave Ø: 25mm(1")
Max. Rope Ø: 6mm(1/4")
Pin Ø: 4mm(5/32")
M.W.L.: 150kg(330lbs)
B. L.: 300kg(660lbs)
Weight: 20g(0.7oz)
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15.42 |
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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 virtually no maintenance
Applications:
Vang, cunningham and trapeze retriever systems on dinghies
Leech line tackles, bunk adjusters etc on larger yachts
Materials:
U.V. Stabilized Acetal sheaves
Grade 316 stainless steel cheeks
Specifications:
Sheave Ø:29mm(1-1/8")
Max. Rope Ø:8mm(5/16")
M.W.L.:300kg(660lbs)
B. L.:600kg(1,320lbs)
Weight:60g(2.1oz)
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27.78 |
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Series 40 All Purpose Block - Single - Stand Up
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Captive Lock™ universal head
Mount with 2 x 5mm (3/16") fasteners (not supplied)
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
M.W.L.: 400kg(880lbs)
B. L.: 800kg(1,760lbs)
Weight: 72g(2.5oz)
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25.69 |
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Series 60 All Purpose Single Block Swivel Shackle Head - Non-Locking
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10M (33')
S60 - on boats up to 12M (40')
Specifications:
Sheave Ø: 2-3/8"
Max. Rope Ø: 9/16"
Pin Ø: 1/4"
M.W.L.: 2430lb
B. L.: 4850lb
Weight: 8.7oz
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37.60 |
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Series 40 Ball Bearing Block - Double - Swivel Head
Features:
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Features a swivel shackle head for full 360° rotation
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
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53.10 |
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Series 40 All Purpose Block - Single - Becket - Universal Head
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required. Becket pin is removeable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
Snap fit removable becket pin
Spare parts - RF150 Shackle, RF41010 Replacement Becket Pin
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 80g(2.8oz)
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23.98 |
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Series 40 All Purpose Block - Single - Cheek
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Can be mounted on masts and booms using the curved surface adapter. Can be stacked to create a double version, but no more than 60% of the rated working load should be applied to the upper sheave.
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Mount with 3 x 5mm (3/16") fasteners (not supplied)
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 66g(2.3oz)
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25.69 |
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Series 20 Ball Bearing Block - Swivel Hook Head
Features:
Low friction
High static and dynamic load capacity
Lightweight
Low profile swivelling hook for quick and easy attachment
Hook suits rope, stainless steel and webbing fixing points
Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction
Applications:
Dinghy control lines
Dinghy vangs
Cunninghams
Traveller controls
Materials:
Stainless steel ball bearings
UV Stabilized Acetal sheave
Grade 316 stainless steel load strap and head fitting
Impact and UV resistant, fiber reinforced Nylon cheeks
Specifications:
Sheave Ø: 20mm(3/4")
Max. Rope Ø: 6mm(1/4")
M.W.L.: 135kg(300lbs)
B. L.: 270kg(590lbs)
Weight: 21g(0.7oz)
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18.83 |
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Series 40 All Purpose Block - Single - Stand Up
All purpose (AP) blocks are a great all around solution. Self-lubricating Acetal polymer sheaves running on polished stainless steel races perform equally well with dynamic loads and high static loads. For durability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing. Becket pin is removeable so line can be spliced prior to fitting and is ingeniously locked into position without the use of a clevis pin, split ring or tools.
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Snap fit removable becket pin
Spare parts - RF41010 Replacement Becket Pin
Applications:
Mainsheet
Halyard
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
U.V. stabilized Acetal sheaves
Impact and U.V. resistant, fiber reinforced Nylon cheeks
Grade 316 stainless steel bearing race
Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
M.W.L.: 400kg(880lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 61g(2.2oz)
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22.25 |
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40mm Carbo Block 90° Fixed Head
Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.
Features:
Sheave Ø (mm): 40 mm
Sheave Ø (in): 1-9/16 in
Maximum line Ø (mm): 10 mm
Maximum line Ø (in): 3/8 in
Maximum working load (kg): 220 kg
Maximum working load (lb): 485 lb
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32.65 |
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