
The SFFR144TLZ1W series are ultra-miniature, super-precision dental drill bearings. Engineered for extreme high-speed operation (over 300,000 RPM), they feature ceramic hybrid construction (ZrO2 balls) for durability, temperature resistance, and electrical insulation. Pre-lubricated and shielded for maintenance-free service, they ensure smooth, quiet, and reliable performance in dental handpieces.