This precision-engineered deep groove ball bearing features an innovative thin-walled design that maximizes space efficiency while maintaining excellent load capacity. With dimensions of 15x21x4mm, this 6702 series bearing is ideal for applications where weight and space are critical factors. The deep groove construction enables smooth, low-noise operation in both radial and axial directions, while offering reliable performance at various speeds. Available with ZZ metal shields or RS rubber seals, these bearings provide flexible protection options against dust and contamination based on your specific needs. Manufactured from premium bearing steel, these components deliver consistent performance and long service life. Part of a comprehensive size range from 6700 to 6710 series, these bearings are perfectly suited for precision equipment, RC servos, and other specialized mechanical applications where compact design and reliable operation are essential.