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Description
Ronstan 75mm Stand-Up, Swivel Core BlockProduct Description Ronstan 75mm 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 75mm 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 - 3 in.
Max. Rope Ø - 9/16 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 330 lb.
B. L. - 6600 lb.
Weight - 16.5 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 use on mainsheet, spinnaker sheet, vang, halyard and backstay applications on boats up to 14m (46ft).
General 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 - 3 in.
Max. Rope Ø - 9/16 in.
Max. Cable Ø - in
Pin Ø - in.
M.W.L. - 330 lb.
B. L. - 6600 lb.
Weight - 16.5 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
4.5 ★★★★★
Based on 28 reviews
Sort
Product Reviews
★★★★★ 3
Good but small
Color: Nude
Great quality purse but much smaller than I expected or smaller than it looks in the photo.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 10, 2025
★★★★★ 5
Perfect accent piece
This purse is a perfect accent piece. It is very chic, will hold my cr3dit cards, telephone, and maybe my sunglasses. Not much more, I wasn’t looking for a purse to hold everything…it’s perfect for my needs,
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2024
★★★★★ 5
Stylish & Functional
Size: 70" x 48", Style: Starter Wall
The Stand Up Desk Store Expanse Modular Wall is a fantastic addition to my workspace. The frosted acrylic panels provide privacy without blocking light, and the sound-absorbent panels really help reduce noise. It’s easy to assemble, looks great with the sleek silver frame, and the modular design makes it super versatile. Great quality and value—highly recommended!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 8, 2025
★★★★★ 4
Does the job
Size: 53" x 48", Style: Starter Wall
Decent look, basic unit. Wasn’t the easiest build, I had to trim panels to get a good fit. Great price, but quality matches that point.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 30, 2024
★★★★★ 5
Excellent
Size: 70" x 48", Style: Starter Wall
Easy to assemble
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 24, 2025
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