NMT Ltd.
Corporate Communications Department
NMT Bearings: Safeguarding Semiconductor Cleanrooms with Ultra-Low Volatility and Zero Magnetic Interference
Semiconductor manufacturing equipment demands near-absolute purity. In critical processes like wafer transfer and lithography, even microscopic grease volatilization or magnetic interference can ruin expensive wafers. NMT miniature precision bearings are custom-built for cleanroom environments. Utilizing a non-magnetic combination of silicon nitride ceramic balls and PEEK cages, NMT eliminates magnetic interference entirely. Coupled with ultra-low VOC specialty grease, it prevents cleanroom contamination at the source. With ultra-quiet operation and micron-level rotational precision, NMT bearings boost semiconductor yield rates while significantly extending component lifespan.
To meet Class 1 ultra-clean standards, NMT implements stringent particle control throughout the bearing's lifecycle. Materially, NMT abandons traditional metals in favor of 99.999% pure silicon nitride ceramics, fundamentally eliminating metal wear debris. For oil-free conditions, NMT deposits an atomically bonded solid lubricant film via magnetron sputtering, completely eradicating lubricant volatilization. In sealing, NMT builds a dedicated clean protection system using ceramic dust caps and high-pressure ultra-pure nitrogen gas curtains to completely block external particles. Field tests show NMT ultra-clean bearings maintain precision with zero particle generation after 8,000+ hours in etching equipment, boosting chip yield by over 15% and becoming an indispensable precision core for advanced manufacturing.