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Description
Ronstan 45mm Single Core BlockProduct Description Ronstan 45mm Single Core Block 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 aluminum alloy cheek plates Central hub hole can be used as a becket take off or tie up point Measurements Sheave 1 3 4 in. (45mm) Max. Rope 1 2 in. (12mm) Max. Cable in (mm) Pin 3 16 in. (5mm) M. W. L. 1540 lb.
Product Description
Ronstan 45mm Single Core Block
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 aluminum alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Measurements
Sheave Ø - 1 3/4 in. (45mm)
Max. Rope Ø - 1/2 in. (12mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5mm)
M.W.L. - 1540 lb. (700kg)
B. L. - 3090 lb. (1400kg)
Weight - 3.6 oz. (104g)
Product Information
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.
Applications
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10m (33ft).
Various control line applications on larger yachts.
Alloy sheave models are available for use with wire.
Materials
Sheave: U.V. stabilised Acetal
Cheek body: Aluminium Alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, head post & hub: Grade 316 stainless steel
Features:
Measurements
Sheave Ø - 1 3/4 in. (45mm)
Max. Rope Ø - 1/2 in. (12mm)
Max. Cable Ø - in (mm)
Pin Ø - 3/16 in. (5mm)
M.W.L. - 1540 lb. (700kg)
B. L. - 3090 lb. (1400kg)
Weight - 3.6 oz. (104g)
Product Information
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.
Applications
Materials
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
A briliant book
Format: Paperback
This book is very neat in its specifics about the effects of absence when a mother is not in a child's life and the roles and effects of mother figures as well. Myself dealing with abandonment issues from my mom and my mother figure in my life, this book really assists in identifying the issues caused from the absent parent. Though the book doesn't offer any real advice as to deal with these problems that arise, it identify's the issues and allows you to further your research in progression. The writing style used can get rather complex though, be prepared for that. I agree with everything provided in this book and recommend it to anyone who's interested in either the psychological effects of absence of a parent, or seek to identify it themselves.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2011
★★★★★ 5
The Attachment series is a brilliant trilogy.
Format: Paperback
It is so detailed - amazing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 3, 2022
★★★★★ 5
Bowlby Books
Format: Paperback
As an MFT graduate student, first hand accounts are important. For the price, add depth to your research writing as the theory intended. Bowlby makes separation axiety, child anger and anger clear. This is a good read even for those who are not in a clinical field. Worth a lot more too me than I paid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 26, 2011
★★★★★ 4
Another piece to the triology offered by Bowlby
Format: Paperback
As with Bowlbys' other works, this classic furthers the hypothesis of negative emotional influence on the continued development of humans as we integrate with our social environments. I liked it...in fact, liked all of Bowlbys' writings.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 7, 2013
★★★★★ 5
Hurrah for Jon Bowlby
Format: Paperback
Early work by someone who offered a contrast to Freud and who led the way to understanding the needs of young children. A cornerstone of most of the work of therapists today.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 5, 2015
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