--- title: RD50 and RD30, the new technological heart of Ursus wheels | Ursus description: Ursus launches two new pairs of hubs that will increase the performance and reliability of your racing bike wheels even more. RD50 and RD30 will... image: https://blog.ursus.it/hubfs/Ursus%202022%20-%20Site/Blog/Copertine/RD50%20e%20RD30%2c%20il%20nuovo%20cuore%20tecnologico%20delle%20ruote%20Ursus.jpg --- [Skip to content](https://blog.ursus.it/magazine/rd50-and-rd30-the-new-technological-heart-of-ursus-wheels#main-content) - [Urban](http://www.ursus.it/products/urban-city) Show submenu for Urban - [Kickstands](http://www.ursus.it/products/urban-city/kickstands/) - [Seat Clamps](http://www.ursus.it/products/urban-city/seat-clamps/) - [Road racing](http://www.ursus.it/products/road-racing/) Show submenu for Road racing - [Wheels](http://www.ursus.it/products/road-racing/road-racing-wheels/) - [Stems](http://www.ursus.it/products/road-racing/road-racing-stem/) - [Seat Post](http://www.ursus.it/products/road-racing/road-racing-seat-post/) - [Handlebars](http://www.ursus.it/products/road-racing/road-racing-handlebars/) - [Hubs](http://www.ursus.it/products/road-racing/hubs/) - [Accessories](http://www.ursus.it/products/road-racing/accessories/) - [Off Road](http://www.ursus.it/products/off-road) Show submenu for Off Road - [Wheels](http://www.ursus.it/products/off-road/off-road-wheels/) - [Handlebars](http://www.ursus.it/products/off-road/off-road-handlebars/) - [Stems](http://www.ursus.it/products/off-road/stem/) - [Hubs](http://www.ursus.it/products/off-road/hubs/) - [Accessories](http://www.ursus.it/products/off-road/accessories/) - Ursus Show submenu for Ursus - [About us](http://www.ursus.it/who-we-are) - [History](http://www.ursus.it/history) - [How we do it](http://www.ursus.it/how-we-do-it) - Resources Show submenu for Resources - [Road racing](http://www.ursus.it/racing-bike-wheels) - [Gravel](http://www.ursus.it/gravel-bike-tires-beyond-asphalt) - [Ciclocross](http://www.ursus.it/wheels-for-cyclocross-bikes) - [Triathlon](http://www.ursus.it/triathlon-bike-wheels) - [Mountain bike](http://www.ursus.it/mountain-bike) - Support Show submenu for Support - [Assistance request](http://www.ursus.it/assistance) - [Product registration](http://www.ursus.it/product-registration) - [Manuals and Catalogues](http://www.ursus.it/catalogs-and-manuals) - [Team & ambassador](http://www.ursus.it/team-ambassador) - [Magazine](https://blog.ursus.it/magazine) - [News](http://www.ursus.it/news) - [Dealers](http://www.ursus.it/dealers) - [Contacts](http://www.ursus.it/contacts) ![en](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/lan-en.png?width=17&height=17&name=lan-en.png)English [![it](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/lan-it.png?width=17&height=17&name=lan-it.png)Italiano](https://blog.ursus.it/it/magazine/rd50-e-rd30-il-nuovo-cuore-tecnologico-delle-ruote-ursus) [![Ursus-icona-toro-logo-web-1](https://blog.ursus.it/hs-fs/hubfs/Ursus-icona-toro-logo-web-1.png?width=400&height=80&name=Ursus-icona-toro-logo-web-1.png "Ursus-icona-toro-logo-web-1")](https://www.ursus.it/) [Race](https://blog.ursus.it/magazine/tag/race) [Accessories](https://blog.ursus.it/magazine/tag/accessories) [Hubs](https://blog.ursus.it/magazine/tag/hubs) [Racing wheels](https://blog.ursus.it/magazine/tag/racing-wheels) # RD50 and RD30, the new technological heart of Ursus wheels ![RD50 and RD30, the new technological heart of Ursus wheels](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/Blog/Copertine/RD50%20e%20RD30%2c%20il%20nuovo%20cuore%20tecnologico%20delle%20ruote%20Ursus.jpg?width=640&height=640&name=RD50%20e%20RD30%2c%20il%20nuovo%20cuore%20tecnologico%20delle%20ruote%20Ursus.jpg) Al lavoro in bici? L’ambiente ringrazia, ma anche le tue tasche. Senza dimenticare la salute. **Ursus launches two new pairs of hubs that will increase the performance and reliability of your racing bike wheels even more. RD50 and RD30 will respectively transform the high-end segment and the entry-level segment, thanks to the innovative technical solutions introduced by our research and development department.** The launch of a new product represents an important step for a company like Ursus. It is the moment in which years of work in research and road testing, in design, and in strategic planning come together. The rapid diffusion of the disc braking system has accelerated the development of this series of hubs, which will now form the **technical basis of every Ursus racing wheel**. With the new hubs for disc brakes, our experience reaches the heart of your wheels to evolve in performance and innovation. ### RD50 HUBS ![rd50-rd30-hubs_3](https://blog.ursus.it/hs-fs/hubfs/rd50-rd30-hubs_3.jpg?width=1140&name=rd50-rd30-hubs_3.jpg) RD50 is a hub with flange for **straight-pull spokes**. It is presented to the general public with the iconic **velvet touch finish** applied to the central body in ergal 7075, a touch of style with the contrast between glossy and matte to emphasize the high-end spirit of this product. But, of course, looks aren’t everything. That’s why Ursus engineers have once again outdone themselves, creating an **even more refined** technical component within it. The keystone defining the assets of the RD50 can be found in the **precision in its construction**. The tolerance limits are reduced to the micron, thanks to the use of cutting-edge numerical control machines, as well as the meticulous verification of each individual dimension. RD50 **supports the action of your legs**, giving you the feeling of greater explosiveness on the pedals. This happens thanks to the **radius angle of the body**, which is reduced compared to the previous range of hubs. In addition to all this, there is also a further **reduction in** **friction**, making the wheel run even more smoothly and with higher responsiveness, but above all a new system of reduced pressure seals that ensure a higher level of protection for the **SKF bearings**. Water, mud and dust have always been enemies of bike components, but the new RD50 seals make these hubs more resistant to atmospheric agents and natural wear and tear, which could affect their smoothness over time. In short, we are talking about components that require **very little ordinary maintenance**, while at the same time maintaining their performance constant over time.   [![view the technical sheet](https://no-cache.hubspot.com/cta/default/3959850/7720a0bf-247f-437c-bb3b-7001352721a1.png)](https://cta-redirect.hubspot.com/cta/redirect/3959850/7720a0bf-247f-437c-bb3b-7001352721a1)     ### RD30 HUBS ![rd50-rd30-hubs_4](https://blog.ursus.it/hs-fs/hubfs/rd50-rd30-hubs_4.jpg?width=1140&name=rd50-rd30-hubs_4.jpg) RD30 is the hub model that will distinguish the Ursus range when it comes to the “first price” wheel segment. Like its older sibling, this hub shares its general technical imprint, however differing in the flanges prepared to house **J-bend spokes**. Aesthetically, the RD30 has a **glossy anodized finish**.   [![view the technical sheet](https://no-cache.hubspot.com/cta/default/3959850/e192dd18-8d8d-48e4-a588-22c77767cdd0.png)](https://cta-redirect.hubspot.com/cta/redirect/3959850/e192dd18-8d8d-48e4-a588-22c77767cdd0)   ### Read more [![THE ORION DISC WHEELSET, AN ALL-ROUNDER](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/Blog/Copertine/6_ORION%20DISC%2c%20UN%20SET%20RUOTE%20%E2%80%9CA%20TUTTO%20TONDO%E2%80%9D.jpg?width=640&height=640&name=6_ORION%20DISC%2c%20UN%20SET%20RUOTE%20%E2%80%9CA%20TUTTO%20TONDO%E2%80%9D.jpg)](https://blog.ursus.it/magazine/the-orion-disc-wheelset-an-all-rounder) [Tubeless](https://blog.ursus.it/magazine/tag/tubeless) [Aluminium wheels](https://blog.ursus.it/magazine/tag/aluminium-wheels) [Gravel](https://blog.ursus.it/magazine/tag/gravel) ## [THE ORION DISC WHEELSET, AN ALL-ROUNDER](https://blog.ursus.it/magazine/the-orion-disc-wheelset-an-all-rounder) [![Travelling by bike: sustainability, trends and future prospects](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/Blog/Viaggiare%20in%20bici%20%20sostenibilit%C3%A0%20%20trend%20e%20prospettive%20future/copertina%205%20%281%29.jpg?width=640&height=640&name=copertina%205%20%281%29.jpg)](https://blog.ursus.it/magazine/travelling-by-bike-sustainability-trends-and-future-prospects) [Cycling tourism](https://blog.ursus.it/magazine/tag/cycling-tourism) [Travel](https://blog.ursus.it/magazine/tag/travel) ## [Travelling by bike: sustainability, trends and future prospects](https://blog.ursus.it/magazine/travelling-by-bike-sustainability-trends-and-future-prospects) [![Travelling solo by bike from Milan to Chicago](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/Blog/Viaggiare%20in%20bici%20da%20sola%20da%20Milano%20a%20Chicago/copertina%204%20%281%29.jpg?width=640&height=640&name=copertina%204%20%281%29.jpg)](https://blog.ursus.it/magazine/travelling-solo-by-bike-from-milan-to-chicago) [Cycling tourism](https://blog.ursus.it/magazine/tag/cycling-tourism) [Travel](https://blog.ursus.it/magazine/tag/travel) ## [Travelling solo by bike from Milan to Chicago](https://blog.ursus.it/magazine/travelling-solo-by-bike-from-milan-to-chicago) [![Travelling by bike with Ursus accessories](https://blog.ursus.it/hs-fs/hubfs/Ursus%202022%20-%20Site/Blog/Viaggiare%20in%20bici%20con%20gli%20accessori%20Ursus/copertina%203%20%281%29.jpg?width=640&height=640&name=copertina%203%20%281%29.jpg)](https://blog.ursus.it/magazine/travelling-by-bike-with-ursus-accessories) [Accessories](https://blog.ursus.it/magazine/tag/accessories) [Cycling tourism](https://blog.ursus.it/magazine/tag/cycling-tourism) [Travel](https://blog.ursus.it/magazine/tag/travel) ## [Travelling by bike with Ursus accessories](https://blog.ursus.it/magazine/travelling-by-bike-with-ursus-accessories) ![Logo-Ursus-green-senza-sfondo-+-toro-RGB](https://blog.ursus.it/hs-fs/hubfs/Logo-Ursus-green-senza-sfondo-%2B-toro-RGB.png?width=120&height=130&name=Logo-Ursus-green-senza-sfondo-%2B-toro-RGB.png "Logo-Ursus-green-senza-sfondo-+-toro-RGB") - [Ursus](http://www.ursus.it/who-we-are) - [Support](http://www.ursus.it/assistance) - [Magazine](https://blog.ursus.it/magazine) - [Product Registration](http://www.ursus.it/product-registration) - [Find a Dealer](http://www.ursus.it/dealers) - [Legal Guarantees of conformity](http://www.ursus.it/legal-guarantees-of-conformity) - [Certifications](https://blog.ursus.it/how-we-do-it#quality) - [Conditions of online sales](https://blog.ursus.it/hubfs/Ursus%202022%20-%20Site/Contatto%20vendita%20on-line_EN.docx.pdf) - [Code of Ethics](https://blog.ursus.it/hubfs/Ursus%202022%20-%20Site/Carta%20dei%20valori%20e%20codice%20condotta%20EN%202024.pdf) - [Safety - GPSR](http://www.ursus.it/catalogs-and-manuals#safety---gpsr) [  INDUSTRIAL](https://industrial.ursus.it/) ### Subscribe to newsletter [  INDUSTRIAL](https://industrial.ursus.it/) [Facebook](https://www.facebook.com/UrsusCycling) [Linkedin](https://www.linkedin.com/company/ursus-spa/) [Instagram](https://www.instagram.com/ursuscycling/) [Youtube](https://www.youtube.com/c/UrsusCycling) **Ursus S.p.A.** Via A. 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