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Description
Ronstan 60mm Stand-Up, Swivel Core BlockProduct Description Ronstan 60mm Stand Up, Swivel 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 Swiveling head post for full 3 axis articulation Strong precision cast padeye base Resilient rubber stand up boot
Product Description
Ronstan 60mm Stand-Up, Swivel 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
Swiveling head post for full 3-axis articulation
Strong precision cast padeye base
Resilient rubber stand-up boot prevents clatter & block falling down when not loaded
Measurements
Sheave Ø - 2 3/8 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 2200 lb.
B. L. - 4410 lb.
Weight - 13.2 oz.
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.
Fully articulated stand-up
Stand-up models have a low profile linkage that provides full rotation and articulation. A high strength precision cast padeye minimizes the footprint and a dedicated rubber boot ensures the block is held upright when not loaded.
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
Post & hub: Grade 316 stainless steel.
Padeye: Grade 15.5PH stainless steel
Features
Measurements
Sheave Ø - 2 3/8 in.
Max. Rope Ø - 1/2 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 2200 lb.
B. L. - 4410 lb.
Weight - 13.2 oz.
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.
Fully articulated stand-up
Stand-up models have a low profile linkage that provides full rotation and articulation. A high strength precision cast padeye minimizes the footprint and a dedicated rubber boot ensures the block is held upright when not loaded.
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
4.0 ★★★★★
Based on 5 reviews
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Product Reviews
★★★★★ 5
Throwing balls for dog
Style: Classic + 2pk Ball, Size: 26in
It sure saves my shoulders
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 11, 2026
★★★★★ 5
A must have for dogs.
Style: Classic + 2pk Ball, Size: 26in
This has provided hours of entertainment for our dog. The Length was perfect and saves a lot wear on your back from not having to bend over as much.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
★★★★★ 5
Best dog throwing toy
Style: Classic + 2pk Ball, Size: 26in
Probably one of the best purchases I have made! The balls are far superior to any tennis ball. My dog likes to chew or bite down on the balls once she catches them and tennis balls ball apart. As to the actual thrower - the extra length on this one has helped me, I had back surgery and am not able to bend over I can reach the ball without too much difficulty. So to sum it up - best dog throwing toy I have purchase!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
★★★★★ 5
Great value and amazing quality!
Great quality, as the bags are not as thin as the other brands, so they are an amazing value and choice.
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Reviewed in the United States on March 24, 2026
★★★★★ 5
Small balls for all of my dogs
I have 5 dogs of various sizes, and I have found that they all love the smallest tennis balls. The biggest won't touch a 3" tennis ball. I also have 2" balls, but everyone's favorite is the 1.5" ball. Now I have 40 of them to last a while!. This package comes with more colors than I've ever had, and they're all very visible. The purple is the least visible, but you can still see it in the grass. We have a large field and constantly throw the balls out. The dogs get plenty of exercise running and jumping after them. The dogs love the squeakers. The big dog (only 35 lb) can put the whole ball in her mouth, but she is not the type to try to swallow it, so I'm not worried. (I know there are some dogs out there who would swallow anything.) She just wants to bite down on it and hear it squeak. It's so much fun watching my dogs and their squeaky balls. The set came with a mesh bag for storage, too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026