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Series 30 Utility Block - Single, Becket, Tube Rivet Head
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase.
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
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16.37 |
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Series 60 Core Block™ - Single
Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Universal Bearing
Dynamic and high static load performance
The Ronstan Universal Bearing incorporates our proven 2-stage bearing system
Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.
Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.
Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.
Alloy Cheek Plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.
Universal head
The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™.
Shackles are high quality forged grade 316 stainless steel.
Features:
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Universal head with full 3-axis articulation
Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key
Central hub hole can be used as a becket take-off or tie-up point
Applications:
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12M (40')
Various control line applications on larger yachts
Materials:
Sheave: U.V. stabilized Acetal
Cheek body: Aluminium Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Specifications:
Sheave Ø: 60mm(2-3/8")
Max. Rope Ø: 12mm(1/2")
Pin Ø: 6mm(1/4")
M.W.L.: 1,000kg(2,200lbs)
B. L.: 2,000kg(4,410lbs)
Weight: 235g(8.3oz)
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76.00 |
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Series 60 Core Block™ - Single - Becket
Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Universal Bearing
Dynamic and high static load performance
The Ronstan Universal Bearing incorporates our proven 2-stage bearing system
Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.
Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.
Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.
Alloy Cheek Plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.
Universal head
The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™.
Shackles are high quality forged grade 316 stainless steel.
Features:
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Universal head with full 3-axis articulation
Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key
Central hub hole can be used as a becket take-off or tie-up point
Applications:
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12M (40')
Various control line applications on larger yachts
Materials:
Sheave: U.V. stabilized Acetal
Cheek body: Aluminium Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Pin: 2205 Stainless Steel
Specifications:
Sheave Ø: 60mm(2-3/8")
Max. Rope Ø: 12mm(1/2")
Pin Ø: 6mm(1/4")
M.W.L.: 1,000kg(2,200lbs)
B. L.: 2,000kg(4,410lbs)
Weight: 275g(9.7oz)
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102.67 |
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Series 75 Core Block™ - Single
Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Universal Bearing
Dynamic and high static load performance
The Ronstan Universal Bearing incorporates our proven 2-stage bearing system
Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.
Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.
Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.
Alloy Cheek Plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.
Universal head
The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™.
Shackles are high quality forged grade 316 stainless steel.
Features:
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Universal head with full 3-axis articulation
Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key
Central hub hole can be used as a becket take-off or tie-up point
Applications:
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14M (46')
Various control line applications on larger yachts
Materials:
Sheave: U.V. stabilized Acetal
Cheek body: Aluminium Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Specifications:
Sheave Ø: 75mm(3")
Max. Rope Ø: 14mm(9/16")
Pin Ø: 8mm(5/16")
M.W.L.: 1,500kg(3,300lbs)
B. L.: 3,000kg(6,600lbs)
Weight: 354g(12.5oz)
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102.67 |
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Series 75 Core Block™ - Single - Aluminum Rope/Wire Sheave
Core Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic or static loads. Acetal sheave, alloy cheeks and stainless fixings complete the durable package. For reliability and a long service life, these blocks are the right choice for sheets, halyards and control line applications for cruising and racing.
Universal Bearing
Dynamic and high static load performance
The Ronstan Universal Bearing incorporates our proven 2-stage bearing system
Stage 1 - Under moderate loads, Acetal ball bearings ensure minimum friction.
Stage 2 - Under heavy loads, where deformation of ball bearings alone would result in increased friction, a sliding Acetal bearing on a polished stainless steel race takes over, maintaining low friction performance.
Additionally the ball bearings are configured to act as a thrust bearing between the sheave and cheeks, preventing the sheave from rubbing on the cheeks and causing friction when the line lead in and out of the block isn't perfect. Particularly important for cheek blocks.
Alloy Cheek Plates
Block cheeks are manufactured from the highest quality alloy for maximum strength. Material optimisation and the cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Cheek design has been further styled with flaring at the block throat and reduced gap between the cheek and sheave, minimising rope wear.
Universal head
The head assembly incorporates a brass bearing washer to provide smooth 360™ rotation of the post and shackle. A set screw arrangement allows the head to be locked at 0™ or 90™.
Shackles are high quality forged grade 316 stainless steel.
Features:
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Universal head with full 3-axis articulation
Head posts can be locked at 0 or 90 degrees, by using a 2.5mm Hex/Allen Key
Central hub hole can be used as a becket take-off or tie-up point
Durable alloy Rope/Wire sheave
Applications:
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 14M (46')
Various control line applications on larger yachts
Aluminium sheave which has a deep groove profile specifically made for use with wire
Materials:
Sheave: U.V. stabilized Acetal
Cheek body: Aluminium Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Specifications:
Sheave Ø: 75mm(3")
Max. Rope Ø: 14mm(9/16")
Max. Cable Ø: 8mm(5/16")
Pin Ø: 8mm(5/16")
M.W.L.: 1,500kg(3,300lbs)
B. L.: 3,000kg(6,600lbs)
Weight: 432g(15.3oz)
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179.33 |
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Series 30 Utility Block- Double, Tube Rivet
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance.Hollow rivets accept fixing screws, shackles or can be used as a becket for extra purchase.
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
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17.00 |
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Series 30 Utility Block- Cheek, Curved Base
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
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
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19.66 |
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Series 30 Utility Block- Double, Loop Top
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
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
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23.14 |
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Series 30 Utility Block - Triple, Loop Top
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
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
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30.67 |
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Series 30 Utility Block- Double, Loop Top and Becket
Features:
Lightweight durable construction
Economical
Maintenance free
Product Information:
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
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26.46 |
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Series 20 Lead Block - Single Pivoting Sheave
Features:
180 degree pivoting sheave
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction.
Applications:
Pivoting version suits controls that need to be trimmed from either side of the boat.
Materials:
Grade 316 stainless steel ball bearings
UV stabilized Acetal sheave
Grade 316 stainless steel load housing
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29.11 |
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Series 20 BB Block Single Becket Option Lashing High Load
Features:
Suits up to 4mm (5/32”) lashing
Supplied with 750mm (30”) x 2mm (3/32”) diameter,
Dyneema® single braid lashing line
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49.34 |
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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 30 Utility Ball Bearing Block - Single, Becket, Swivel Shackle Head
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
Cheek cut-outs for easy bearing maintenance
Product Information:
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:
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
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36.82 |
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Series 40 Orbit BB Double Block with Swivel & Shackle
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 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 highly 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 adjustable for setting 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
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, off-the-beach 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: 3/8 in.
Pin Ø: 5/32"
M.W.L.: 1320 lb.
B. L.: 2650 lb.
Weight: 4.2 oz.
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64.00 |
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