Cema 689 Stainless Ceramic bearings

CEMA 689 Stainless Ceramic Bearings | Hub Spare Parts

Unleash the ultimate performance potential of your wheel hubs with the CEMA 689 Stainless Ceramic Bearings. Engineered for cyclists who demand nothing but the best, this premium upgrade is designed to significantly reduce friction, enhance durability, and provide a noticeably smoother, faster ride. As a crucial component in our Spare Parts category, these hub bearings are the definitive choice for replacing or upgrading your stock bearings, transforming your cycling experience from the inside out.

Experience a new level of efficiency with every pedal stroke. The core benefit of these CEMA bearings lies in their incredibly low-friction properties. The perfectly spherical, high-precision ceramic balls glide effortlessly within the stainless steel races, minimizing rotational resistance. This translates directly into saved watts and higher speeds for the same effort, giving you a competitive edge whether you´re racing against the clock or enjoying a long-distance tour. Feel your wheels spin longer and more freely, and notice the immediate difference in coasting and acceleration.

Key Benefits:

* Drastically Reduced Friction: Achieve a silky-smooth rotation that allows your wheels to spin with unparalleled freedom. This efficiency gain means more of your power is transferred into forward motion, making you faster and reducing fatigue over long rides.
* Enhanced Durability and Longevity: Built to last, these bearings feature exceptionally hard ceramic balls that resist wear and deformation far better than traditional steel. Paired with robust stainless steel races, they offer an extended service life, even under the demanding conditions of competitive cycling and frequent use.
* Superior All-Weather Performance: Don´t let rain or humidity slow you down. The combination of non-corrosive ceramic balls and high-quality stainless steel races provides outstanding resistance to rust and corrosion. The double-sealed design further protects the internal components from water, dirt, and grit, ensuring consistent performance in any environment.
* Lightweight Advantage: Every gram counts when you´re chasing performance. These ceramic bearings offer a tangible weight saving over their all-steel counterparts, contributing to a lighter overall wheelset and a more responsive, agile bike.

Main Features:

* High-Precision ABEC-5 Rating: Manufactured to exacting ABEC-5 tolerance standards, these bearings guarantee exceptional precision, minimal runout, and a consistently smooth, quiet operation.
* Double-Sealed Protection: A robust seal on both sides of the bearing provides a formidable barrier against contaminants. This design is critical for maintaining internal lubrication and preventing premature wear, significantly extending maintenance intervals and the bearing´s lifespan.
* Stainless Steel Races: The inner and outer rings are constructed from high-grade stainless steel, providing a durable, corrosion-resistant track for the ceramic balls, ensuring long-term reliability and performance.
* Versatile Hub Application: Designed as a direct replacement spare part for a wide variety of bicycle hubs that utilize the 689 bearing size, making it a straightforward and highly effective upgrade.

Technical Specifications

For a perfect fit and guaranteed performance, please verify the dimensions required for your specific hub. These Bearings are engineered to precise measurements for seamless installation.

Wheel Bearing Cema 689 - Ceramic.

Wheel Bearing Cema 689 - Ceramic Double Sealed Abec5 Bearing.

Dimensions:

9 X 17 X 5 .

(Inner Diameter: 9mm | Outer Diameter: 17mm | Width: 5mm)

Upgrade your hubs today with CEMA 689 Stainless Ceramic Bearings and experience the tangible difference that superior engineering makes to your ride. It´s not just a spare part; it´s a performance investment