In the ultra-clean environments of semiconductor manufacturing, bearings face challenges far beyond those of general industrial applications. Wafers in lithography machines require nanometre-level positioning accuracy; etching and deposition equipment operates continuously in vacuum chambers; handling robots move at high speeds in cleanrooms—the operational accuracy, cleanliness, and reliability of these equipment directly determine chip yield and production capacity. Semiconductor equipment demands far more from bearings than simple load carrying and rotation; requirements include extremely low particle generation, strict cleanliness control, chemical corrosion resistance, and long-term stable operation in vacuum or special atmosphere environments.

 

NMT Semiconductor Equipment Bearings, with high cleanliness, low particle generation, corrosion resistance, and long life as core characteristics, provide precision transmission support for wafer fabrication and assembly testing. Stainless steel deep groove ball bearings, thin-section bearings, angular contact ball bearings, and crossed roller bearings work together to form a comprehensive semiconductor equipment bearing fitting system, adapting to lithography machines, etchers, thin-film deposition equipment, wafer handling robots, probe stations, test handlers, and other semiconductor equipment.

 

High cleanliness is the primary requirement for NMT semiconductor bearings. Semiconductor manufacturing is extremely sensitive to particle contamination; a single micron-level particle can cause short circuits or open circuits in chip circuits, resulting in irreparable losses. NMT semiconductor bearings use high-cleanliness materials and special surface treatment processes to minimise particle generation during bearing operation. Assembly is performed in Class 100 cleanrooms, with all components undergoing ultrasonic cleaning and high-purity nitrogen purging. Special clean packaging ensures no new contamination is introduced during transportation and storage.

 

Low particle generation is the core characteristic of NMT semiconductor bearings. During bearing operation, contact between rolling elements and raceways generates tiny wear particles, and friction between cages and rolling elements also produces debris. Through ultra-precision machining, NMT achieves mirror-grade raceway surface finish, significantly reducing friction coefficient and wear. Special low-particle cage materials maintain dimensional stability during long-term operation without generating debris. Optimised low-particle lubrication solutions provide effective lubrication while minimising lubricant evaporation and particle generation.

 

Corrosion resistance is a key characteristic of NMT semiconductor bearings. Semiconductor manufacturing processes use large quantities of corrosive chemical gases and liquids. Ordinary bearings are highly susceptible to corrosion failure in such environments. NMT offers all-stainless steel bearings (SUS304, SUS316, SUS440C, etc.), effectively resisting chemical media attack. Special surface treatment processes further enhance bearing corrosion resistance, adapting to etching, cleaning, wet process, and other corrosive environments.

 

Vacuum and special atmosphere adaptability are unique values of NMT semiconductor bearings. Physical vapour deposition, chemical vapour deposition, etching, and other processes are performed in vacuum or special atmosphere environments, requiring bearings to maintain stable performance under low pressure or even ultra-high vacuum conditions. Through special material selection and vacuum-compatible lubrication solutions, NMT enables bearings to release no volatile organic compounds in vacuum environments, maintaining stable lubrication and operational accuracy.

 

Long life is the value assurance of NMT semiconductor bearings. Semiconductor equipment investment is enormous, and downtime for maintenance equally impacts production capacity. Through material optimisation, process control, and lubrication solution refinement, NMT enables bearings to maintain long-term reliable operation under clean, corrosive, vacuum, and other complex conditions.

 

NMT semiconductor bearings are available with all-stainless steel construction, vacuum-compatible lubrication, low-particle cages, and other custom solutions to suit the specific requirements of different semiconductor equipment.

 

Core Product Advantages

High cleanliness—high-cleanliness materials and special surface treatments minimising particle generation, Class 100 cleanroom assembly, ultrasonic cleaning and high-purity nitrogen purging, clean packaging;

 

Low particle generation—ultra-precision machining for mirror-grade raceway finish, special low-particle cage materials, optimised low-particle lubrication solutions, minimising wear particles and evaporation;

 

Corrosion resistance—all-stainless steel options (SUS304, SUS316, SUS440C) available, special surface treatment processes effectively resisting corrosive chemical gas and liquid attack;

 

Vacuum and special atmosphere adaptability—vacuum-compatible lubrication solutions, no volatile organic compound release, maintaining stable lubrication and operational accuracy under low pressure and ultra-high vacuum;

 

Low friction and low temperature rise—ultra-precision matching and optimised lubrication, maintaining stable temperature rise during long-term continuous operation, reducing thermal drift impact on processing accuracy;

 

Long life—high-purity materials and optimised processes maintaining long-term reliable operation under complex conditions, reducing unplanned downtime and maintenance frequency;

 

All-stainless steel and vacuum-compatible lubrication custom solutions available;

 

International standard external dimensions—direct interchangeability with mainstream brand products, facilitating maintenance and replacement.

 

Typical Applications

Lithography machine precision platform bearings—ultra-clean support for nanometre-level positioning accuracy; Etcher vacuum chamber bearings—long-term reliable operation in corrosive gas and vacuum environments; Thin-film deposition equipment bearings—stable transmission in high-temperature vacuum environments; Wafer handling robot bearings—low-particle support for high-speed reciprocating motion in cleanrooms; Probe station bearings—precision positioning transmission at micron-level accuracy; Test handler bearings—low-particle precision transmission during high-speed continuous testing; Wafer dicing and grinding equipment bearings—high-precision low-particle processing support; Semiconductor inspection equipment bearings—precision rotation in high-cleanliness environments.

 

Quality Assurance

NMT semiconductor bearing quality assurance covers the entire process from raw materials to finished products. Stainless steel materials undergo spectral analysis, material composition testing, and cleanliness verification upon incoming inspection. Special surface treatment processes ensure ring surface finish and corrosion resistance. Raceways undergo ultra-precision grinding and mirror-grade polishing with surface roughness controlled to extremely low levels. Rolling elements undergo multi-stage grinding and precision grading with excellent dimensional consistency and sphericity accuracy. Cages use low-particle special materials with precision machining. All components undergo ultrasonic cleaning and high-purity nitrogen purging. Assembly is performed in Class 100 cleanrooms with precise clearance control. Finished products pass torque, vibration, rotational accuracy, and particle count testing, with complete data archived. Clean packaging ensures cleanliness is maintained upon delivery.

 

Product Range

Stainless steel deep groove ball bearing series—high-cleanliness general-purpose type, adapting to various semiconductor auxiliary equipment; Stainless steel thin-section bearing series—compact lightweight design, adapting to wafer handling robots and other space-constrained applications; Stainless steel angular contact ball bearing series—high-precision combined load capacity, adapting to precision positioning platforms and high-speed rotating equipment; Crossed roller bearing series—high-rigidity compact design, adapting to precision turntables and platforms; All-stainless steel material options available; Vacuum-compatible lubrication solutions available; Low-particle cages available.

 

Brand Strength

NMT has been dedicated to the research, development, and manufacturing of precision bearings for over a decade. As a high-precision advanced category within the NMT product portfolio, semiconductor equipment bearings serve lithography machines, etchers, wafer handling robots, probe stations, and other semiconductor equipment sectors with high cleanliness, low particle generation, corrosion resistance, and long life characteristics. The company operates complete precision machining production lines, Class 100 clean assembly rooms, professional testing laboratories, and an experienced technical team.

 

Every step of semiconductor chip manufacturing depends on reliable precision transmission support. With professional capability and quality commitment, NMT provides trustworthy bearing products for semiconductor equipment, supporting the advancement of chip manufacturing precision and yield improvement.