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Series 55 Ratchet Mount Orbit Block - Single Cleat Swivel - Auto
Features:
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
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.
* Selected Series 55 models.
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 patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitor. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designs 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 minimize rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Materials:
Sheave: Anodized 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®
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119.68 |
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Series 55 Ratchet Mount Orbit Block - Fiddle Becket Swivel
Features:
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
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.
* Selected Series 55 models.
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 patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitor. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designs 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 minimize rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load
Materials:
Sheave: Anodized 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®
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71.04 |
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Series 55 Ratchet Mount Orbit Block - Single Becket Swivel
Features:
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
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.
* Selected Series 55 models.
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 patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitor. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designs 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 minimize rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Materials:
Sheave: Anodized 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®
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65.08 |
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Series 40 Ball Bearing All Purpose Exit Block Narrow
The Series 40 ball-bearing Orbit Blocks™ provides the perfect balance of strength, performance, and reliability. They offer class-leading dynamic and static load ratings, the highest available in this size of performance blocks. Lightweight and strong toughened glass fiber reinforced nylon cheeks replace stainless steel straps used in traditional utility blocks - the perfect balance of performance and reliability.
As well as traditional single swivel blocks, the range also includes single and double sheave lashing or soft attachment options through to multiple sheave blocks including those with quad and quin sheaves. The range is extremely versatile allowing a multitude of possible systems right up to a 12:1 purchase mainsheet system for off-the-beach performance catamarans.
Series 40 Orbit Blocks™ are fitted with our carbon-reinforced C-Cleat™ for secure rope holding with low entry and exit efforts, and fairleads for fast action from any angle. Cleat arms are made from stainless steel and are adjustable for setting to your preferred cleating angle.
Ball Bearing versions incorporate our 2-stage bearing system using ball bearings to minimize friction and a secondary full-contact bearing to maintain low friction across the full working load range.
High Load versions are designed specifically for any application where high dynamic or static loads are expected. They feature a high-strength grade 2205 stainless steel sheave & hub together with a triple bearing race to maintain low friction at very high loads.
Features:
Class-leading dynamic and static load ratings, highest in their class
Lightweight, yet strong. Toughened, glass fiber reinforced nylon replaces stainless steel straps used in our traditional utility blocks
Low friction 2-stage ball bearing system for efficient and effortless trimming
Soft attachment, lashing, and traditional swivel shackle head options
Low profile and compact
High performance cleating
Applications:
Mainsheet systems and spinnaker sheets on dinghies, OTB catamarans and sportsboats to 8m (26ft)
Halyard, vang and backstay applications on boats to 9m (30ft)
Control line applications on larger yachts
Specifications:
Sheave Ø: 1-9/16 in.
Max. Rope Ø: 5/16 in.
M.W.L.: 880/1760 lb.
B. L.: 3530 lb.
Weight: 9.5 oz.
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70.61 |
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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 15 Ball Bearing Utility Block - Single, Swivel Shackle 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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16.46 |
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Series 15 Ball Bearing Utility Block - Single, Swivel Hook 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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19.26 |
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Series 15 Ball Bearing Utility Block - Single Block, 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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9.40 |
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Series 15 Ball Bearing Utility Block - Single 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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11.12 |
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Series 15 Ball Bearing Utility Block - Cheek Block
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
Features lateral supports for improved mounting stability.
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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11.99 |
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Series 15 Ball Bearing Utility Block - Upright Lead Block
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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16.27 |
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Series 15 Ball Bearing Utility Block - Pivoting Lead Block
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
Featuring a 4-point fastening for load distribution and low profile. Can be mounted without disassembly.
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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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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Series 15 Ball Bearing Utility Block - Exit Block
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
Features a flush rivet to minimize cutout and facilitate installation.
Featuring a formed single piece housing for maximum strength and minimal rope wear.
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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24.40 |
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Series 30 Ball Bearing Block - Single - Loop Top
Features:
Low friction 2-stage ball bearing system provides consistent performance over the full working load range
High static and dynamic load capacity
Light weight
Versatile head fittings
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction
Can be fitted with a shackle in either of two planes to allow correct alignment of the block
Applications:
Primary lead blocks on dinghies and catamarans
Control lines on larger yachts
Materials:
U.V. stabilized Acetal sheaves
Acetal ball bearings
Impact modified, fiber reinforced and U.V. stabilized Nylon cheeks
Grade 316 stainless steel load straps and head fittings
Specifications:
Sheave Ø: 30mm(1-3/16")
Max. Rope Ø: 8mm(5/16")
M.W.L.: 300kg(660lbs)
B. L.: 750kg(1,650lbs)
Weight: 28g(1.0oz)
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15.66 |
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