DEDICATED TO THE RIDE.DEDICATED TO ENGINEERING.
Engineered precision, exceeding limits.
Engineered precision, exceeding limits.
Powering the wheel to drive the board.
Bearings, powering every ride.
At the center of every skateboard wheel lies an axle, supported by bearings. MinebeaMitsumi specializes in miniature and small-sized ball bearings with outer diameters of 22 mm or less. By using low-friction rolling motion, our ball bearings ensure smooth wheel rotation—efficiently converting every push into forward momentum while minimizing energy loss and wear. Ultimately, bearing precision directly dictates wheel performance.
As the balls roll between the inner and outer rings, they reduce friction, allowing the shaft to rotate smoothly with minimal energy.
Without balls between the shaft and outer ring, high friction requires significantly more energy to maintain rotation.
A ball bearing consists of four core components: an inner ring, an outer ring, balls, and a retainer. The inner and outer rings support rotational movement, the balls reduce friction, and the retainer keeps the balls aligned. Sealed with high-performance lubricant and protective shielding, the assembly ensures smooth, long-lasting motion while preventing leakage.
Basic composition of a ball bearing
The world's smallest mass-produced steel ball bearing is the result of MinebeaMitsumi's passion for ultra-precision. Despite its tiny size, its performance and precision rival standard-sized bearings. Used in premier Japanese mechanical watches, this innovation opens doors to endless potential across diverse industries.
Smooth bearing motion hinges on the precision of the inner balls. Even surfaces that appear smooth to the naked eye reveal microscopic imperfections. To reduce friction to the absolute minimum, MinebeaMitsumi fits its bearings exclusively with ultra-precise balls polished to nano-level surface roughness (Ra).
Balls that underpin the precision motion of the bearing.
They are meticulously polished to reduce friction resistance to the minimum extent possible.
MinebeaMitsumi's Six Growth Areas
From cooling with fans and pumps to data storage and connectivity, our wide range of precision components supports higher-performance AI servers.
From detecting nearby obstacles to high-speed transmission of camera data, components such as motors and connectors support autonomous driving technology.
From precise positioning and stable flight to battery protection, our antennas, motors, and semiconductors support drone operations.
From seat cooling and in-vehicle displays to drive motor control, our diverse components support comfortable, efficient mobility.
From delicate fingertip control to flexible joint articulation, our sensors, motors, and bearings support precise motion.
Our sensors, motors, bearings, and other components support aerospace technology, enabling precise control and reliable aircraft and spacecraft operation in demanding environments.
