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Description
Ronstan 75mm Halyard Core BlockProduct Description Ronstan 75mm Halyard 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 Suits direct attachment to mainsail headboard for 2: 1 halyard Removable 8mm (5 16) threaded pin at head Acetal roller on head
Product Description
Ronstan 75mm Halyard 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
Suits direct attachment to mainsail headboard for 2:1 halyard
Removable 8mm (5/16”) threaded pin at head
Acetal roller on head pin to suit spliced line attachment
Alloy Rope/Wire sheave version also available
Measurements
Sheave Ø - 3 in. (78 mm)
Max. Rope Ø - 9/16 in. (14 mm)
Max. Cable Ø - in (mm)
Pin Ø - 5/16 in. (8 mm)
M.W.L. - 330 lb. (1500 kg)
B. L. - 6600 lb. (3000 kg)
Weight - 8.6 oz. (234 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 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.
Pin: 2205 stainless steel
Features
Measurements
Sheave Ø - 3 in. (78 mm)
Max. Rope Ø - 9/16 in. (14 mm)
Max. Cable Ø - in (mm)
Pin Ø - 5/16 in. (8 mm)
M.W.L. - 330 lb. (1500 kg)
B. L. - 6600 lb. (3000 kg)
Weight - 8.6 oz. (234 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
4.1 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
De buena calidad!!
Color: B/B/B/B, Color: B/B/B/B
Me encanta las tintas hippos hacen que mis proyectos con subñimacion queden perfectos . Color vibrantes. Compatible a mi impresora Empson ET4800. Vale la pena el precio .
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Reviewed in the United States on April 10, 2026
★★★★★ 5
Ink
Color: B/B/B/B
Great?
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 23, 2025
★★★★★ 5
Ink is very cost effective as I use more black ink than any of the others
Color: B/B/B/B
I've only used Hiipooo ink and when I saw this, I decided to order for "just in case." Since I hadn't had to refill my printer, I thought I'd better open the box and reply to the review. Now that I've opened, I see that I have 4 bottles to refill and four syringes. So I assume it is not going to be as easy as the initial fillup when I first purchased the Epson ET 15,000. Now, I have questions as to how I'm to refill my printer. The top of the refill bottle does not have the same opening as the printer and when I tilted the bottle, a drop of ink came out. I didn't like. And there are no instructions to direct the process of refilling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 20, 2023
★★★★★ 5
Love Hiipo brand sublimation ink!
Color: B/B/B/B
I have used Hiipo ink for a while now but I ran out and ordered this one. It’s exactly as advertised with the easy fill top. Highly recommend! All of my prints turn out perfectly. I use this with my Epson ET 15000.
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Reviewed in the United States on December 29, 2023
★★★★★ 5
Perfect color, budget pricing
Color: B/B/B/B
I love Hiipoo sub ink. It's all I use. I never have an issue with any of the colors.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 23, 2024