NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
Type-A thin-section angular contact ball bearings are ultra-slim constant cross-section rotary components with inclined raceways forming fixed contact angles (15°,25°,40° customizable).They are specially engineered to bear combined radial and unidirectional axial loads simultaneously,perfect for compact,lightweight,high-precision limited-space equipment.
Core Technical Specifications
Contact Angle Options:15°,25°,40° for different thrust load demands.Size Range:Inner diameter 25.4–508mm,constant cross-section 10×10–15×15mm.Materials:Rings & rolling elements (52100 bearing steel,440C/316 stainless steel,ceramic hybrid);Cages (nylon,brass,stainless steel).Precision Grades:ABEC-1/3/5 (P0,P6,P5) aerospace ultra-precision standards.Sealing & Lubrication:Open,shielded,fully sealed structures;standard anti-oxidation grease,vacuum low-outgassing solid lubricants for cleanroom & vacuum environments.Operating Temperature:-40℃ ~ 120℃,customized extreme low-temperature lubricant for special working conditions.Lead Time:Standard models ship within 5–15 working days;customized preloaded bearings with special coatings require negotiated delivery schedules.
Semiconductor wafer robots (also called wafer handling robots,EFEM robots,vacuum transfer robots) are core ultra-clean automated manipulators specially used for transporting,loading/unloading silicon wafers in semiconductor fabs,covering atmospheric wafer transfer robots,vacuum wafer robots,FOUP handling robots,and lithography station robotic arms.They operate in Class 1/10/100 ultra-clean workshops and high-vacuum sealed chambers,undertaking high-frequency reciprocating transport of 6/8/12-inch wafers between etching,deposition,exposure and testing equipment.Every joint of the multi-stage telescopic robotic arm (rotary base,shoulder,elbow,wrist and end effector) needs to install precision rotary bearings matched with miniature servo motors.The internal arm structure is extremely narrow and must reserve hollow channels for clean air pipelines,sensor cables and signal lines.During continuous high-speed pick-and-place cycles,the bearings bear alternating radial arm weight,unidirectional axial thrust and frequent small impact loads.Even tiny particle shedding,rotation jitter or positioning deviation will scratch wafer surfaces,cause circuit defects and massive production scrap.Ordinary standard bearings produce excessive dust,have large rotational inertia and obvious internal backlash,which cannot meet the ultra-clean,nanoscale positioning demands of wafer production.Thus,low-outgassing,zero-backlash thin section angular contact ball bearings become the indispensable core rotary parts of all wafer robot modules.
Constant Cross-Section Design
Space & Weight Saving:Unlike standard ISO series bearings—where cross-sectional height increases as bore size increases—thin section bearings maintain a fixed,extremely narrow cross-section regardless of the shaft diameter.
Compact Footprint:This constant geometry drastically reduces envelope dimensions,overall assembly weight,and rotational inertia without sacrificing shaft diameter size,reserving large hollow inner holes for robot internal clean cable & gas line routing.
High Axial (Thrust) Load Handling in One Direction
Contact Angle Geometry:The inner and outer ring raceways are displaced relative to each other along the bearing axis,typically creating a 15°,25° or 40° contact angle.
Combined Loads:This geometry enables the bearing to support high thrust loads in one direction,alongside concurrent radial loads.
Duplex Configurations:To support bidirectional thrust loads or increase joint rigidity,these bearings are mounted back-to-back (DB) or face-to-face (DF) in pairs inside wafer robot reducers.
Precision & High Rigidity
Preload Capability:Thin section angular contact bearings can be ground for light,medium or heavy preloading.Preloading removes internal clearance and mechanical backlash,eliminating arm wobble during ultra-slow wafer positioning.
Smooth Rotational Accuracy:Ultra-precision superfinishing ensures minimal rotational runout,realizing micron-level repeated positioning required for delicate wafer handling.
Low Friction & Low Torque
Small Rolling Elements:Miniature steel/ceramic balls cut centrifugal force and rolling resistance greatly.
High-Speed Efficiency:Low friction generates little heat during frequent reciprocating swing,avoiding grease volatilization and particle pollution inside vacuum clean chambers.
Semiconductor Wafer Robot Core Joints
Wafer robot rotary base bearings,multi-stage telescopic arm shoulder & elbow pivot supports,miniature wrist rotary modules,end effector rotating shafts,FOUP door swing bearings,vacuum chamber internal rotary indexing units,wafer aligner turntable bearings.
General Precision Industrial Robotics
Collaborative robot wrist & elbow joint bearings,desktop miniature handling manipulators,precision rotary index tables for electronic assembly.
Aerospace & Optoelectronic Gimbal Equipment
Airborne optoelectronic pod rotary supports,satellite antenna pointing mechanisms,UAV camera PTZ bearings.
Medical Precision Equipment
Surgical robot joint bearings,CT rotary frame thin bearings,laboratory precision testing turntables.
Ultra-Clean & Vacuum Automation Equipment
Lithography machine rotary stages,optical inspection equipment turntables,low-particle vacuum transmission platforms.
Ultra-Light Low-Inertia Design Improves Wafer Transfer Speed:Extra mass on robotic arms raises servo load,slows response speed and prolongs wafer production takt time.Thin section angular contact ball bearings cut component weight by over 40% compared with same-bore standard bearings.Lighter rotary parts lower arm rotational inertia,enabling faster acceleration/deceleration of wafer arms while keeping stable movement,significantly boosting fab production throughput.
Thin Wall Hollow Layout Fits Compact Robot Arm Structure:Wafer robot multi-joint telescopic arms have very limited internal space and need to route ultra-clean air tubes and signal wires through the bearing center hole.Conventional thick bearings occupy too much radial space and cannot reserve central hollow channels.The fixed thin cross-section design retains a large inner diameter under small overall dimensions,integrating wiring pipelines inside joints and avoiding cable friction pollution during rotation.
Preloaded Zero Backlash Prevents Wafer Scratches:Silicon wafers are extremely fragile; slight positioning offset or arm shaking will cause surface scratches and circuit failure.Preloaded thin angular contact ball bearings fully eliminate rotational clearance and micro-vibration under cyclic transport loads,maintaining consistent ultra-smooth rotation to achieve sub-micron repeated positioning accuracy and drastically reduce wafer scrap rate.
Ultra-Clean Vacuum Adaptation Avoids Workshop Contamination:Custom stainless steel/ceramic hybrid versions,paired with low-outgassing cleanroom lubricants and fully labyrinth sealing,restrain particle shedding and grease volatilization under high vacuum.They meet Class 1/10 ultra-clean workshop standards,no dust pollution to wafers or precision optical components inside lithography equipment.
Composite Load Simplifies Robot Modular Assembly:Paired thin bearings simultaneously bear radial arm self-weight,axial reducer tension and wafer picking overturning torque,replacing multiple sets of separate radial/thrust bearing combinations.It reduces the number of internal mechanical parts of robot joints,shortens equipment assembly and calibration cycles,and lowers semiconductor equipment manufacturing costs.
Excellent Anti-Wear Performance Reduces Fab Downtime Superfinished:HRC55–62 hardened raceways deliver outstanding anti-particle and anti-fatigue performance,enduring tens of millions of wafer transfer cycles without precision decay.Frequent bearing replacement and production line shutdown maintenance are greatly cut,improving continuous operation efficiency of semiconductor fabs.
Newbeetrans is a professional manufacturer specializing in cleanroom & vacuum-grade thin section bearings for all types of EFEM,vacuum and FOUP wafer handling robots.
Semiconductor Customization Service:Supply low-particle preloaded thin bearings,440C stainless steel & ceramic hybrid variants,vacuum low-outgassing special lubrication and dust-proof sealing models; wafer robot prototype samples can be finished within 10–15 working days per customer drawings.
Strict Ultra-Clean Precision Inspection:All inner rings,outer rings and balls adopt mirror superfinishing process; every bearing passes low-particle test,vacuum outgassing inspection and long-cycle reciprocating swing fatigue test to meet semiconductor fab cleanliness standards.
Stable Global Shipment:Mass stock of standard Type A thin series supports fast delivery; full air & sea cross-border logistics for semiconductor equipment manufacturers worldwide.
Authoritative Quality Certification:Products comply with ISO 9001 and semiconductor cleanroom testing standards,SGS low-outgassing & particle test reports can be provided on request.
Global Technical Support:Professional bearing engineering team provides load calculation,contact angle matching and duplex preload design for all wafer robot joint structures.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276