Cases

Providing thin section bearings in vacuum environment for customers of vacuum coating machines in Taiwan

Date:March 17,2026

Customer:High-end enterprise in Taiwan’s vacuum coating machine manufacturing industry

Background

In early 2026,a leading Taiwanese manufacturer of vacuum coating equipment faced critical technical obstacles when developing a new generation of high-vacuum multi-station coating machines. The customer put forward strict customized demands for vacuum-adapted thin section bearings:outer diameter 120 mm,inner diameter 80 mm,installation thickness limited to an ultra-thin 18 mm envelope,and stable operation under 10⁻⁶ Pa high-vacuum environment.

Meanwhile,the bearing must reach P4-level precision,maintain low outgassing,low friction torque and long-term stable rotation,to ensure the coating accuracy and uniformity of wafer,optical glass and precision metal parts. At first,the customer tried conventional thin section bearings from several suppliers,but none could meet the dual requirements of ultra-thin size and vacuum compatibility. Standard thin section bearings suffered from outgassing pollution,lubrication failure and dimensional deviation in high vacuum,which directly hindered the vacuum chamber rotation system and the whole coating machine R&D progress.

What Are Vacuum Environment Thin Section Bearings? 

Vacuum environment thin section bearing is a special precision bearing designed for vacuum,high-cleanliness and low-outgassing working conditions,adopting ultra-thin section symmetrical structure,with small cross-section,light weight and high rigidity. Different from standard thin section bearings,it uses vacuum-grade materials,low-outgassing lubrication and special surface treatment,able to operate stably for a long time in high vacuum,clean room and dust-free environment.

Developed and produced by NewBeeTrans,these bearings achieve P4/P2 precision grades,support radial,axial and moment loads at the same time,and are widely used in vacuum coating,semiconductor equipment,space simulation and optical vacuum instruments.

Features of Vacuum Environment Thin Section Bearings

Vacuum thin section bearings have unique performance advantages for vacuum and high-precision working conditions,with core features as follows:

Ultra-thin section & compact structure:The cross-sectional size is highly optimized,with thickness as low as 10 mm,saving installation space in the limited vacuum chamber. The equal-section design ensures uniform load distribution,matching the lightweight and miniaturization trend of vacuum coating machines.

Vacuum compatibility & low outgassing:Made of vacuum-grade stainless steel and low-outgassing materials,with special degassing treatment,the total mass loss (TML) and collected volatile condensable materials (CVCM) meet NASA vacuum standards,avoiding pollution to coating products and vacuum systems.

Special vacuum lubrication:Adopt solid lubrication,vacuum grease or dry film lubrication,no oil volatilization and pollution in high vacuum,maintaining low friction torque and stable rotation,suitable for long-term continuous operation.

High precision & stable rotation:Reach P4/P2 precision grade,radial runout ≤0.002 mm,ensuring the rotation accuracy of the coating workbench,and improving the uniformity and yield of film coating.

Multi-directional load capacity:Single bearing can bear radial,axial and overturning moment at the same time,adapting to the complex stress of multi-station rotating workbench in vacuum coating machines.

Corrosion & high temperature resistance:Optional high-temperature resistant materials and surface treatment,compatible with high-temperature baking process in vacuum coating,and resistant to weak corrosion of special process gas.

Applications of Vacuum Environment Thin Section Bearings

Relying on vacuum adaptability,ultra-thin structure and high precision,these bearings are widely used in core fields:

Vacuum Coating Machines:Applied to rotating workbench,drum,transmission shaft and indexing mechanism of optical coating,magnetron sputtering and evaporation coating equipment.

Semiconductor Equipment:Used in wafer transmission,vacuum manipulator and coating cavity rotation system,adapting to ultra-clean vacuum environment.

Space Simulation Devices:Suitable for ground simulation test equipment in vacuum and weightless environment,ensuring long-term stable performance.

Optical Vacuum Instruments:Used in vacuum optical path adjustment,laser coating and precision scanning mechanism,reducing vibration and improving stability.

Scientific Research Equipment:Applied to high-vacuum scientific experimental devices,precision rotating components and low-outgassing transmission system.

Price of Vacuum Environment Thin Section Bearings

The price is determined by multiple customized and technical factors:

Vacuum-grade Material:Vacuum-specific stainless steel has higher cost than conventional materials; special alloy materials for extreme vacuum increase cost by 25%-35%.

Precision Grade:P4 grade is standard for vacuum coating; P2 ultra-precision type is 20%-30% more expensive for high-end optical and semiconductor coating.

Thin Section & Customization:Non-standard ultra-thin thickness,special mounting holes and size modification increase price by 15%-25%.

Lubrication & Treatment:Vacuum-specific lubrication and deep degassing treatment add 10%-20% cost.

Order Quantity:Bulk orders (≥100 pieces) enjoy 15%-25% discount; small-batch customized or urgent orders increase unit price by 20%-30%.

How to Choose Vacuum Environment Thin Section Bearings

Purchasers should evaluate the following key points to select the optimal bearing:

Confirm Dimensional Parameters:Match inner diameter,outer diameter and thickness with vacuum chamber structure,prioritize ultra-thin standard size or customized design.

Verify Vacuum Level:Select corresponding low-outgassing materials and lubrication according to high vacuum (10⁻³~10⁻⁷ Pa) or ultra-high vacuum environment.

Determine Precision Grade:Choose P4 for conventional vacuum coating,P2 for optical and wafer coating requiring micron-level accuracy.

Evaluate Load & Speed:Match load capacity and friction torque with rotating workbench,avoid overload or high-speed failure.

Check Environmental Adaptability:Confirm compatibility with high temperature,process gas and clean room,select corresponding surface treatment.

Select Reliable Supplier:Choose manufacturers with vacuum bearing R&D experience,vacuum testing conditions and quality certification.

Manufacturer of Vacuum Environment Thin Section Bearings

NewBeeTrans is a professional manufacturer of vacuum-adapted thin section bearings,providing customized precision bearing solutions for global vacuum equipment,semiconductor and optical industries.

Complete Product Line:Standard ultra-thin section specifications cover inner diameter 30-200 mm,thickness 10-30 mm; support non-standard size customization,vacuum grade material,special lubrication and sealing customization.

Professional Vacuum R&D & Testing:Equipped with vacuum outgassing test bench,high-vacuum life test machine and precision detection equipment,all products pass TML/CVCM test and vacuum operation verification,meeting international vacuum standards.

Customized Solutions:Senior engineer team provides one-stop customization:size optimization,vacuum material selection,low-outgassing lubrication matching and special mounting structure design; sample development cycle 4-8 weeks.

Strict Quality Control:Implement ISO 9001 quality system,full-process precision manufacturing and 100% finished product inspection,with 12-month warranty and long-term stability guarantee.

Efficient Delivery:Standard products in stock deliver within 7-15 days; customized products provide rapid response production; cooperate with global logistics to support Taiwan and Asian customers’ on-time supply.

Precautions for Vacuum Environment Thin Section Bearings 

To ensure performance and service life in vacuum environment,key precautions are as follows:

Clean Assembly:Assemble in clean room,remove oil,dust and impurities; prohibit use of volatile cleaning agents; avoid surface contamination.

Vacuum Compatibility Installation:Use low-outgassing fasteners and gaskets; fix evenly to avoid deformation affecting rotation accuracy.

Special Lubrication:Use designated vacuum lubricant; prohibit ordinary grease; strictly control lubrication dosage to avoid excess volatilization.

Vacuum Chamber Treatment:Fully bake and exhaust before formal operation to remove volatile substances on bearing surface.

Operation Monitoring:Monitor temperature,torque and vibration; abnormal condition means lubrication failure or wear,stop for inspection.

Storage Condition:Store in clean,dry,dust-free environment (humidity ≤50%),keep original packaging,avoid extrusion and deformation.

Technical Specifications of Vacuum Environment Thin Section Bearings 

For technical parameters,quotation and customized solutions:Email:sales@newbeetrans.com Website:www.newbeetrans.com