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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
4.4 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Excellent sunscreen for daily sun protection...
This is a great sunscreen for the "light" days in the sun. I layer my skincare (serums, creams, then sunscreen) before I apply my makeup. Sunscreen is always the last step before I apply my makeup. Other brands have been known to "bead up" under my makeup through out the day, or have a white cast to them. This does not do that. It doesn't leave a white cast, or residue of any kind on my skin. It is lightweight to the point of being weightless right after application. It is incredibly moisturizing on my dry skin as well, which I LOVE! Love the ingredients too for everyday use!
The only downside to this sunscreen is it isn't strong enough to protect my skin on days I am in the sun a lot and cannot reapply every hour, or so. I noticed a couple of stubborn brown spots pop up after a couple hours in direct sunlight. I didn't burn, but I did get a tan on my face I was hoping to avoid. All in all, This is my favorite sunscreen I use when I am running to-and-fro, but not the sunscreen I will use at the ball field, or a day at the beach.
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Reviewed in the United States on April 22, 2015
★★★★★ 5
A little pricey but worth it
I LOVE THIS SO MUCH. I have really sensitive skin and eczema, and am allergic to scented liquid soaps, detergents and creams. I got a sample of this in a subscription box, and fell in LOVE after I tested just a little on my hand at first. Now I've ordered multiple time, and even shipped some to my mom! It feels luxurious but also fresh and natural on your face, I put it on as a moisturizer, hit some concealer under my eyes, swipe some mascara on and am good to go - it feels like a whole skin-care routine in one go.
The size is a little small for the price, but it's light, non-irritating, and refreshing. I think it's definitely worth it if you have sensitive skin and want sun protection without a load of chemicals on your face. I put a picture of what it looks like on my hand reflected in some light - it's slightly greasy at first, but it dries nice and soft afterwards, I still feel like my pores can breathe. I usually don't write product reviews, but after I ordered my 3rd batch I felt I should share.
*One other thing to note - make sure you read the label if you want the specific scented one, I accidentally ordered the unscented one when I wanted the cucumber because the packaging looks the same and the label is in the scripty font and I missed it when I made a rushed order.
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Reviewed in the United States on August 8, 2019
★★★★★ 5
Great for sensitive skin
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I usually have problems with fragrance in almost any face cream or sunscreen, and my skin reacts very easily, so I’m always careful with what I use. I tried the COOLA Organic Face Sunscreen SPF 50 Sunblock Lotion (Fragrance Free) and I’m honestly impressed. It feels very light on the skin, doesn’t irritate my face at all, and finally a sunscreen that doesn’t have that strong smell that usually bothers me. It absorbs well, works great under makeup, and gives good daily protection without feeling greasy. If you have sensitive skin or issues with fragrance like I do, this one is definitely worth trying.
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Reviewed in the United States on March 25, 2026
★★★★★ 5
Love this sunscreen
Scent: Fragrance Free, Size: 1.7 Fl Oz (Pack of 1)
I would love to buy again, but I go through sunscreen, I have to find a little less expensive one. No burn, dewy not greasy look. Great for mature skin. No fragrance, works well, melts right in the skin. I do love this product and the spray too!
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Reviewed in the United States on May 17, 2026
★★★★★ 5
Light and works with no eye stinging.
Scent: White Tea, Size: 1.7 Fl Oz (Pack of 1)
I love this sunscreen. I wear co tact’s and most sunscreen ends ups burning my eyes. This does not! It has a nice cucumber smell and it’s not sticky or heavy. By far the best face sunscreen that’s light, smells nice, doesn’t burn my eyes and works.
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Reviewed in the United States on May 21, 2026