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Description
Ronstan 75mm Double Core Foot BlockProduct Description Ronstan 75mm Double Core Foot 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 aluminium alloy cheek plates Central hub hole can be used as a becket take off or tie up point Sheave 3 in. (75 mm) Max. Rope in. (mm) Max. Cable in. (mm) Pin in. (mm) M. W. L. 3300 lb. (1500** kg) B. L. 6600 lbs.
Product Description
Ronstan 75mm Double Core Foot 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 aluminium alloy cheek plates
Central hub hole can be used as a becket take-off or tie-up point
Sheave Ø - 3 in. (75 mm)
Max. Rope Ø - in. (mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
M.W.L. - 3300 lb. (1500** kg)
B. L. - 6600 lbs. (3000** kg)
Weight - 18.7 oz. (530 g)
** - Total block load. Maximum load on top sheave not to exceed 50% of total block load
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 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, 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. stabilised acetal or anodised aluminium (AW models).
Cheek plates: Aluminium alloy
Ball Bearings: High compression strength carbon black acetal.
Features
Sheave Ø - 3 in. (75 mm)
Max. Rope Ø - in. (mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
M.W.L. - 3300 lb. (1500** kg)
B. L. - 6600 lbs. (3000** kg)
Weight - 18.7 oz. (530 g)
** - Total block load. Maximum load on top sheave not to exceed 50% of total block load
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 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, 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
4.3 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Great Mixer At A Great Price.
Color: Black, Size: normal
I purchased this mixer over 6 months ago. I use it at least 2 to 3 times a day to mix fiber into a flavored drink. It also gets used for mixing gravy and Chinese sauces. So from light to medium duty and no problems at all. One battery lasted over 4 months.
I did try an alternate wand mixer($15 to $20) with variable speed to try and slow the mixing down a bit. It's low speed(fast) was the same as this mixer so I sent it back and kept this one. In addition to being more economical the simplicity of the single speed should give it good reliability.
Lastly, if it gets damaged you're only out ~$7.00
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Reviewed in the United States on May 29, 2026
★★★★★ 5
Ease and reliability of use
Color: Black, Size: normal
This is great! It froths my milk for my expresso. It mixes my protein powder drinks. Quick. Easy. And there is nothing to take apart for cleaning. Love it!
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Reviewed in the United States on June 1, 2026
★★★★★ 4
Easy and it works
Color: Silver, Size: Compact
It works! It doesn’t have different speed settings, and you have to make sure you have the right kind of milk, but so far it’s been great and easy to use.
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Reviewed in the United States on March 6, 2026
★★★★★ 5
Simple upgrade that actually feels worth it
Color: Black, Size: normal
I replaced a cheap milk frother I had from Walmart with this one, and it’s definitely an upgrade. Right out of the box it just feels a bit nicer and more solid, not flimsy like the other one.
It’s also noticeably more powerful. It froths milk really quickly and does what it’s supposed to without any effort. I did notice it only has one ring on the whisk compared to the two on my old one, but I honestly don’t notice any difference in how it works.
Only small thing was getting the batteries in, which was a little tighter than I expected. Not a big deal, just took a second.
Overall, it just works well and feels worth the price. I’ve only had it for a short time, but so far I’m happy with it and hoping it holds up.
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Reviewed in the United States on April 19, 2026
★★★★★ 5
Great frother at a good price
Color: Black, Size: normal
Works really well and priced appropriately. Produces rich froth with minimal effort and works MUCH better than other much higher priced frothers. Highly recommended. I hope it lasts a good long time.
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Reviewed in the United States on May 13, 2026