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Description
Ronstan 60mm Double, Non-Swivel Head Core BlockProduct Description Ronstan 60mm Double, Non Swivel Head 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 Removable threaded pin at shackle head Measurements Sheave 2 3 8 in. (60 mm) Max. Rope 1 2 in. (12 mm) Max. Cable
Product Description
Ronstan 60mm Double, Non-Swivel Head 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
Removable threaded pin at shackle head
Measurements
Sheave Ø - 2 3/8 in. (60 mm)
Max. Rope Ø - 1/2 in. (12 mm)
Max. Cable Ø - in (mm)
Pin Ø - in. (mm)
M.W.L. - 2200 lb. (1000 kg)
B. L. - 4410 lb. (2000 kg)
Weight - 13.8 oz. (390 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.
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 & hub: Grade 316 stainless steel
Pin: 2205 stainless steel.
Features
Measurements
Sheave Ø - 2 3/8 in. (60 mm)
Max. Rope Ø - 1/2 in. (12 mm)
Max. Cable Ø - in (mm)
Pin Ø - in. (mm)
M.W.L. - 2200 lb. (1000 kg)
B. L. - 4410 lb. (2000 kg)
Weight - 13.8 oz. (390 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.
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
4.2 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 4
Great product. Poor packaging
Scent: Fragrance Free, Size: 96 Fl Oz (Pack of 1)
We heard this was a must have product to use when having a baby. The product seems to work great as we have been using it for a few loads a week now. Giving four stars because the packaging was not the best and two out of the three bottles were leaking at the neck when it arrived. It didn’t seem worth the hassle to return so we kept it. If the packaging could be updated it would be all around solid.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2023
★★★★★ 5
Bueno
Scent: Fragrance Free, Size: 96 Fl Oz (Pack of 1)
Muy bueno el producto, no tiene olor y hasta el momento llevo más de un mes usándolo y mi nene no le ha hecho alergia
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 7, 2026
★★★★★ 5
Removes very hard stains w/ease!
Scent: Fragrance Free, Size: 96 Fl Oz (Pack of 1)
I've been using this for a while on my son's clothes & have been happy, it's concentrated so less is more. But what makes me give it 5 stars is it's ability to remove dried sweet potato baby food out of a light cream colored onesie lol wow! I followed the directions, poured a little on the stain, rubbed it in & let it sit for a few mins. Then just tossed it in the washer & hoped for the best... ALL of the stain came out, you can't tell it was ever there! That in itself makes it worth every penny. I will be repurchasing before this bottle runs out!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2025
★★★★★ 5
Wonderful
Worked really well to soothe my sunburns quickly.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 12, 2025
★★★★★ 5
Coconut deliciousness
Best stuff makes my skin so soft and love the smell of coconuts. Makes my skin so soft
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2025
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