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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 50 All Purpose Block - Single - 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
Features:
Exceptionally high working loads
Low maintenance, long service life
Self lubricating sheave
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats 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. Pin Ø: 5mm(3/16")
M.W.L.: 750kg(1,650lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 118g(4.1oz)
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25.97 |
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Series 40 All Purpose Block - Single - 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.
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating sheave
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
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: 71g(2.5oz)
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18.00 |
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Series 40 Ball Bearing Block - Single - Universal Head
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.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.
Features:
Low friction Acetal or Torlon® bearing system
Lightweight
Cheek cut-outs for easy bearing maintenance
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
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
Acetal ball bearings
Impact and U.V. resistant, fiber reinforced Nylon cheeks
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.: 350kg(770lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 70g(2.5oz)
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23.54 |
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Series 40 High Load Block - Single
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
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
Applications:
Halyards
Backstays
Vang
Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials:
Nylatron® sheave
Grade 316 stainless steel load strap and head fitting
Impact and U.V. resistant, fiber reinforced Nylon cheeks
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40.46 |
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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 50 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
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats 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. Pin Ø: 5mm(3/16")
M.W.L.: 750kg(1,650lbs)
B. L.: 1,500kg(3,310lbs)
Weight: 118g(4.1oz)
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39.34 |
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Series 50 All Purpose Block - Single Stand Up
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
Mount with 2 x 5mm (3/6") fasteners (not supplied)
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. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting.
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
S60 - on boats up to 12m (40ft)
Typically used in direct 4:1 purchase systems such as mainsheets and boom vangs
On larger boats they are used for fine-tune mainsheet tackles, outhauls, cunninghams, checkstays, genoa lead pullers and traveller controls.
Materials:
Grade 316 stainless steel load strap
Impact and UV resistant, fiber reinforced Nylon cheeks
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36.82 |
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Series 50 All Purpose Block - Single Upright Lead
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Ideal for high load applications. Wear resistant sheave material, in lightweight, self lubricating polymer, is suitable for use with rope or wire
Applications:
Typically used for halyards at the mast base.
Materials:
UV stabilized acetal sheave
Grade 316 stainless steel load housing
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38.42 |
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Series 30 Ball Bearing Block Single Becket Option Lashing
Ball Bearing Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fibre-reinforced composites in the block head, cleat arms and beckets.
Highest Working Load in its Class
The proven Ronstan 2-stage bearing system (Series 30 and larger) features high compression grade Acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.
The sheave and bearing system is supported by a fibre-reinforced load frame, computer modelled and optimised using advanced stress analysis methods. The Dyneema® Link, used in multi-sheave blocks, is produced from high spec SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point.
Simple, Versatile & Secure Attachment
The single block is easily lashed to an attachment point, and can also accept Dyneema® Links and shackles for a variety of efficient attachment alternatives. The Dyneema® Link used in multi-sheave blocks is easily fitted and secured by a removable pin. The Dyneema® Link can also be removed and replaced by a shackle, custom lashing or strop.
These blocks are far more compatible with Dyneema®/Spectra® lines, carbon laminate connection points and webbing than traditional blocks with steel loop tops or shackles.
Low Profile & Compact
The two way head in the single lashing block allows for alignment at 0° or 90° orientation, while the single swivel block allows for full articulation.
The flexible Dyneema® Link used in multi-sheave blocks provides 0° or 90° orientation. It connects directly to the head of the block rather than to an intermediate head post. This reduces weight and gives the lowest possible profile while allowing full articulation. Beckets have been carefully designed to minimise height.
Features:
Lightweight
Highest working load in its class
Secure, versatile and secure attachement
Low profile and compact
Ultra low profile thru-sheave becket
Self-lubricating Nylatron® sheave and full contact bearing for high dynamic loads
Applications:
Mainsheet systems and spinnaker sheets on dinghies to 5M(16')
Halyard, vang and backstay applications on boats to 5M(16')
Control line applications on larger yachts
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82.34 |
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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 40 Ratchet Orbit Block™ - Single - Auto - Swivel Shackle Head
Automatic Ratchet
With automatic models, 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.
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. The Series 40 delivers up to 14:1 holding power, almost double that of our nearest competititor.
The unique sheave design has 8 gripping faces which directly resist loaded line movement. Traditional designs have 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.
Simple and Secure Attachment
The Dyneema® Link is easily fitted and is retained securely by a moulded retainer clip. The flexible link can be left with one end attached to the block when fitting - no more lost shackle pins.
The system is compatible with Dyneema®/Spectra® strops, webbing and carbon connection points - much more so than steel loop tops or shackles.
Smooth Easing of Sheets
With auto models the sheet runs out smoothly and freely as soon as the ratchet mechanism disengages.
Low Profile Stand-Up Kit Allows 0™ or 90™ Alignment
Stand-up kits feature a clatter-free rubber boot. You can attach the Dyneema® link so that the block is aligned with the stand-up base or across it. It's a neat low-profile solution which allows full articulation.
Features:
Up to 14:1 holding power - highest available!
Smooth easing of sheets
Fully Automatic load sensing ratchet engagemen
Swivel shackle head for unlmited block rotation
Stainless steel shackle head for ultimate durability and compatibility with harsh fixing points
Applications:
Dinghy mainsheet systems
Mainsheet fine tune systems on sportsboats & small keel boats
Mainsheet systems on sportsboats using RF7 mainsheet swivel cleat unit
Spinnaker and job sheets on dinghies - especially modern asymmetric classes
Control line applications on larger yachts
Materials:
Sheave: Hard anodised Aluminium
Ball Bearings: High compression strength carbon black Acetal
Frame/Cheeks: Toughened, glass fiber reinforced Nylon
Rope Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 9mm(5/16")
M.W.L.: 175kg(385lbs)
B. L.: 500kg(1,100lbs)
Weight: 44g(1.5oz)
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52.67 |
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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 50 All Purpose Block - Fiddle - Becket - Cleat
Features
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
Snap fit removable becket pin
Multi-position cleat arm
Spare Parts - RF51010 Replacement Becket Pin, RF150 Shackle
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. Quick adjusting cleat arms require no tools to adjust and fix securely in position. Becket pin is removable so line can be spliced prior to fitting and is i
Appllications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
S60 - on boats up to 12m (40ft)
Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems.
Materials:
Grade 316 stainless steel load strap
Impact and UV resistant, fiber reinforced Nylon cheeks
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96.96 |
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Series 50 All Purpose Block - Fiddle
Features:
Exceptionally high working loads
Low maintenance, long service life
Self-lubricating Acetal polymer sheave ensures low friction and extreme durability
Captive Lock™ universal head
Slotted pin shackle eliminates fouled lines
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
Applications:
Mainsheet and halyard applications, vang and spinnaker control lines on boats to 10m (33ft)
S60 - on boats up to 12m (40ft)
Ideal for fine-tune mainsheet tackles, cunninghams, backstays and other control line purchase systems.
Materials:
Grade 316 stainless steel load strap
Impact and UV resistant, fiber reinforced Nylon cheeks
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48.82 |
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