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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
4.7 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
Kate spade purse
Size: One Size, Color: Seaweed, Size: One Size, Color: Seaweed
Love the style, look, and size of this purse but not the color seaweed. Rebought in color dusk rose. So much better! This color can be used in summer or winter. Has two pockets on the inside, 1 zips, 1 doesn't.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 18, 2026
★★★★★ 5
Beautiful bag
Size: One Size, Color: Dusk Rose
Im obsessed. Its a little smaller than I thought. But I also have to carry two different epi pens and an inhaler for my son. Everything including phone and wallet barely fit. But its stunning and im so glad I bought it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
Love!
Size: One Size, Color: Seaweed
Absolutely love! Perfect color and size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 3, 2026
★★★★★ 5
Great
Size: One Size, Color: Dusk Rose
Nice bag!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 5
Dressy or Casual!
Size: One Size, Color: Hickory Bark Suede
I absolutely love this purse. It’s the perfect size.. the texture is amazing and the color goes with any outfit. It could be dressy or casual.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
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