Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Ronstan 60mm Single, Aluminum Rope/Wire Sheave Core BlockProduct Description Ronstan 60mm Single, Aluminum Rope Wire Sheave Core Block Features Class leading performance and sleek, contemporary styling Excellent dynamic and high static load performance Less than half the friction of the nearest competitor Durable aluminum alloy cheek plates Central hub hole can be used as a becket take off or tie up point Durable alloy Rope Wire sheave Universal head with full 3 axis articulation Shackle head lockable at 0
Product Description
Ronstan 60mm Single, Aluminum Rope/Wire Sheave Core Block
Features
Class leading performance and sleek, contemporary styling
Excellent dynamic and high static load performance
Less than half the friction of the nearest competitor
Durable aluminum alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Durable alloy Rope/Wire sheave
Universal head with full 3-axis articulation
Shackle head lockable at 0 or 90 degrees
Measurements
Sheave Ø - 2 3/8 in. (60 mm)
Max. Rope Ø - 1/2 in. (12 mm)
Max. Cable Ø - 3/16 in. (5 mm)
Pin Ø - 1/4 in. (6 mm)
M.W.L. - 2200 lb. (1000 kg)
B. L. - 4410 lb. (2000 kg)
Weight - 10.3 oz. (292 g)
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 optimization and the cut-away design minimizes 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, minimizing 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.
Acetal & aluminum sheave options
Selected models are available with an aluminum sheave which has a deep groove profile specifically made for use with wire.
Applications
Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 12m (40ft).
Various control line applications on larger yachts.
Alloy sheave models are available for use with wire.
Materials
Sheave: U.V. stabilized Acetal or anodized aluminum (AW models)
Cheek plates: Aluminum alloy
Ball Bearings: High compression strength carbon black Acetal
Shackle, post & hub: Grade 316 stainless steel.
Features
Measurements
Sheave Ø - 2 3/8 in. (60 mm)
Max. Rope Ø - 1/2 in. (12 mm)
Max. Cable Ø - 3/16 in. (5 mm)
Pin Ø - 1/4 in. (6 mm)
M.W.L. - 2200 lb. (1000 kg)
B. L. - 4410 lb. (2000 kg)
Weight - 10.3 oz. (292 g)
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 optimization and the cut-away design minimizes 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, minimizing 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.
Acetal & aluminum sheave options
Selected models are available with an aluminum sheave which has a deep groove profile specifically made for use with wire.
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
4.6 ★★★★★
Based on 235 reviews
Sort
Product Reviews
★★★★★ 4
Learn why we cry in this great kids book!
Format: Hardcover, Format: Hardcover
I received a digital copy of this book from the publisher. All thoughts and opinions are my own.
"Some days we cry because we call out for a hug but all we get back is an echo."
Why Do We Cry? begins with a boy asking his mother why we cry. There are many answers to such a question and the mother helps the boy explore the many reasons why we may shed tears.
As the mother explains the reasons why we cry, the illustrations become a bit surreal, to show the emotions and feelings associated with crying, from sadness to anger to grief. The mother compares and contrasts, all the while weaving a poetic story about her own life or memories and emotions.
This book reminds us that it is okay to cry, that crying can be a release, a way to heal, or let go. It helps us understand the difference between emotions and how they affect us.
There's an educational spread at the end of the book that teaches us the different types of tears, one of which--emotional tears-- is featured in this book, what they are made of, and even how much they weigh!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 12, 2020
★★★★★ 5
A Beautiful & Informative Exploration of Tears and Feelings
Format: Hardcover
A nonjudgemental and supportive exploration of the reasons we cry accompanied by imaginative and thoughtful art. Beautiful and informative, the final two pages include scientific information on tears to complement the emotional context of the main part of the story. Suitable for ages 3 to 7.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 25, 2020
★★★★★ 4
It's okay to cry
Format: Kindle
This picture book beautifully normalizes the reasons why children (and adults) may cry. It passes no judgment and does not belittle. Rather, some of the many reasons for tears are described; these include anger, sadness and happiness among others. Crying is seen as a normal response to being human. At the end of the book, there is additional information, some of it scientific, about tears. The book is sensitively illustrated with gorgeous pictures that enhance the text. This would be a great title to share with a child you know.
Many thanks to NetGalley and the publisher for this read in exchange for an honest review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2020
★★★★★ 5
Great product
Style: Sustainable - Stretch Cloth, Size: 3 Count (Pack of 1)
I like the material, it seems to hold up that I haven’t had it very long. It dries completely between showers. It’s not over exfoliating.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
★★★★★ 5
Works great
Style: Sustainable - Stretch Cloth, Size: 3 Count (Pack of 1)
Love how it stretches so it’s easy to clean the back and my skin is very soft after!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026