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Series 25 Utility Block - Single, Becket, Loop Head
Features:
Lightweight durable construction
Economical
Maintenance free
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.
Applications:
Vang, cunningham and trapeze retriever systems on dinghies
Leech line tackles, bunk adjusters etc on larger yachts
Materials:
UV stabilized Acetal sheaves
Grade 316 stainless steel cheeks
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11.99 |
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Series 30 Utility Block - Single, Becket, Loop 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 in the block heads can be fitted with shackles, which can also be used to add 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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13.85 |
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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 25 Utility Block - Single Swivel Ring Head
Features:
Lightweight durable construction
Economical
Maintenance free
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.
Applications:
Vang, cunningham and trapeze retriever systems on dinghies
Leech line tackles, bunk adjusters etc on larger yachts
Materials:
UV stabilized Acetal sheaves
Grade 316 stainless steel cheeks
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20.28 |
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Series 25 Utility Block™ - Single - Loop 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")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 15g(0.5oz)
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9.68 |
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Series 30 Utility Block - Single, Becket, Ferrule Eye 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 in the block heads can be fitted with shackles, which can also be used to add 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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21.22 |
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Series 30 Utility Block - Single, Becket, Swivel Shackle 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 in the block heads can be fitted with shackles, which can also be used to add 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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26.46 |
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Series 30 Utility Block - Single, Swivel Shackle 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 in the block heads can be fitted with shackles, which can also be used to add 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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21.68 |
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Series 30 Utility Block - Single - Ferrule Eye 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 yachts
Materials:
U.V. stabilized Acetal sheaves
Grade 316 stainless steel cheeks
Specifications:
Sheave Ø:29mm(1-1/8")
Max. Rope Ø: 10mm(3/8")
M.W.L.:350kg(770lbs)
B. L.:500kg(1,100lbs)
Weight:40g(1.4oz)
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16.21 |
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Series 19 Utility Block™ - Single - Ferrule Eye 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: 19mm(3/4")
Max. Rope Ø: 5mm(3/16")
M.W.L.: 150kg(330lbs)
B. L.: 450kg(990lbs)
Weight: 10g(0.4oz)
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15.06 |
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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 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 45 Core Block™ - Single - Swivel Shackle Head
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.
Features:
High dynamic and static load capacity
Efficient 2-stage bearing system
Ball bearings to counteract side thrust loads
Class leading performance and sleek, contemporary styling
Durable aluminium alloy cheek plates
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 10M (33')
Various control line applications on larger yachts
Alloy sheave models are available 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: 45mm(1-3/4")
Max. Rope Ø: 12mm(1/2")
Pin Ø: 5mm(3/16")
M.W.L.: 700kg(1,540lbs)
B. L.: 1,400kg(3,090lbs)
Weight: 104g(3.6oz)
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50.93 |
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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 30 Ball Bearing Orbit Block™ - Single - Becket - Lashing Head
Ball Bearing Orbit 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 fiber-reinforced composites in the block head, cleat arms and beckets.
Features:
Lightweight
Highest working load in its class
Secure, versatile and secure attachement
Low profile and compact
Ultra low profile thru-sheave becket
RF35101 accepts RF1850S shackle in both orientations to create a conventional loop top block
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
Materials:
Sheave: High compression strength carbon black Acetal
Ball Bearings: High compression strength Acetal
Frame/Cheeks: Toughened, glass fiber reinforced Nylon
Link: UV stabilized, multi-strand impregnated SK75 Dyneema®
Specifications:
=Sheave Ø: 30mm(1-3/16")
Max. Rope Ø: 8mm(5/16")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 22g(0.8oz)
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11.99 |
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