SKU: 35826833493

Ronstan Series 45 Core Block - Single - Swivel Shackle Head

Sale price$64.48 Regular price$71.64
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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12

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Description

Ronstan Series 45 Core Block - Single - Swivel Shackle HeadSeries 45 Core Block Single Swivel Shackle Head 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,

Series 45 Core Block™ - Single - Swivel Shackle Head

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 optimisation and the cut-away design minimises 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, minimising rope wear.

Features:

  • High dynamic and static load capacity
  • Efficient 2-stage bearing system
  • Ball bearings to counteract side thrust loads
  • Class leading performance and sleek, contemporary styling
  • Durable aluminium alloy cheek plates
  • Central hub hole can be used as a becket take-off or tie-up point


Applications:
  • Ideal for mainsheet, halyard and spinnaker sheet applications on boats to 10M (33')
  • Various control line applications on larger yachts
  • Alloy sheave models are available for use with wire


Materials:
  • Sheave: U.V. stabilized Acetal
  • Cheek body: Aluminium Alloy
  • Ball Bearings: High compression strength carbon black Acetal
  • Shackle, head post & hub: Grade 316 stainless steel


Specifications:
Sheave Ø: 45mm(1-3/4")
Max. Rope Ø: 12mm(1/2")
Pin Ø: 5mm(3/16")
M.W.L.: 700kg(1,540lbs)
B. L.: 1,400kg(3,090lbs)
Weight: 104g(3.6oz)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 35826833493

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RS
Omaha, US
★★★★★ 5
So fun with good results!
Works great so far! Never used a sublimation printer or heat press before in my life and the shirt below is my attempt. The ghosting was totally user error and not due to the print. The set-up process was a bit long because it involved a 14 minute ink cycle, but the instructions walk you through every step very clearly so there were no issues. Follow them and you will be up and running in about 25 minutes. It did not come with paper as represented so be sure you have some on hand. The print quality is great from my perspective and from my shopping around, it's a great value for the money. There is little to no noise and it prints much faster than I was expecting.
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Reviewed in the United States on April 22, 2026
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Denise Tirado
Natrona Heights, US
★★★★★ 5
Clear and Vibrant Printing
Absolutely LOVE this printer!! I was due for an upgrade and so happy I chose this one. Sublimation is so crisp and clear.
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Reviewed in the United States on June 10, 2026
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Anyi_Rodriguez
Belleville, US
★★★★★ 5
Highly recommended! 🎨✨
This Epson sublimation printer has been one of the best investments for my small business. The print quality is outstanding—colors come out vibrant, sharp, and consistent on every project. Whether I’m printing on mugs, shirts, tumblers, or keychains, the results are professional every single time. Setup was easy, and the ink conversion for sublimation works smoothly. The printer runs quietly, and the prints dry quickly, which helps a lot when working on multiple orders. I also appreciate how efficient it is with ink; it lasts longer than I expected. If you’re starting a sublimation business or simply love crafting, this printer is a game changer. Reliable, easy to use, and delivers perfect prints every time. Highly recommended! 🎨✨
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Reviewed in the United States on November 13, 2025
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Josseling
Carnegie, US
★★★★★ 5
Good quality works properly
Recommended, it is easy to use, it works very well and is of good quality
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Reviewed in the United States on March 28, 2026
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Luis Cisneros
Natrona Heights, US
★★★★★ 5
Great value for the cost
Amazing quality for the prints, I bought this trying to stay away from a modded (conversion from regular to sublimation) biased by the opinion of a friend who did the conversion, but the quality was poor, and after a few washes the color will start to fade, if not immediately, and also for tumblers the color wasn’t vibrant. With this one, the entire opposite, very friendly, fast to setup, worth every penny, you can print multiple designs, the ink level barely moves, until now, no problems or needing to shake it to keep it “alive” it’s just as simple as start print and go. Also the drivers included make sure the image is mirrored, the settings are sharp and ready to print. Very recommended (my wife loves it!!)
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Reviewed in the United States on May 11, 2026

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