Applied Materials 0020-39361 Lower Bearing Race, RTP XE Chamber

Product Description

The 0020-39361 is a precision-machined lower bearing race component manufactured by Applied Materials for RTP XE rapid thermal processing vacuum chambers. It is matched with the upper bearing race (PN 0020-39360) to form the full rotary ball bearing assembly. Fabricated from high-temperature alloy with ultra-precision ground raceway surface, it supports the rotating wafer susceptor under high heat and high vacuum environment. It maintains tight geometric tolerances to ensure low-wobble, stable wafer rotation for uniform rapid thermal annealing of 200mm/300mm silicon wafers. Available inventory includes cleaned used and refurbished races for wafer fab chamber maintenance and rebuild projects.

Product Functions

• Provide precision lower raceway surface for ball bearings to support and guide rotating wafer susceptor inside RTP XE chamber.
• Cooperate with upper bearing race (0020-39360) to constrain ball bearing movement and maintain consistent rotary axis alignment.
• Withstand repeated rapid thermal cycling and vacuum environment without permanent deformation or surface degradation.
• Maintain low rotational runout and flatness to prevent wafer tilt and temperature mapping deviation during RTP annealing recipes.
• High-hardness polished raceway minimizes bearing wear and reduces metal particle generation in cleanroom vacuum chamber.
• Carry axial and radial mechanical load from susceptor and wafer during high-temperature rotation cycles.
• Modular component design allows disassembly and replacement during chamber preventive maintenance cycles.

Application Scenarios

• RTP XE rapid thermal processing chambers on Applied Materials semiconductor platforms for 200mm and 300mm wafer thermal annealing.
• Source/drain activation, silicide formation and thin film stress tuning processes for CMOS semiconductor manufacturing.
• Spare replacement for worn, scratched or deformed 0020-39361 lower bearing races causing rotation wobble or temperature non-uniformity.
• Chamber overhaul, rotary subsystem rebuild and preventive maintenance projects in wafer fabrication fabs.
• Process recipe requalification and temperature mapping after bearing race pair replacement.
• Spare parts inventory for semiconductor equipment service vendors and wafer manufacturing factories.

Common Problems

• Raceway surface scratching and denting: bearing ball wear and contamination particles scoring precision raceway, increasing rotation wobble.
• Thermal deformation: repeated rapid heating/cooling cycles causing race warping, leading to susceptor tilt and poor wafer temperature uniformity.
• Particle contamination: metal debris generated from bearing/race friction, introducing yield-killing particles onto wafer surface.
• Dimensional tolerance drift: surface material fatigue over long runtime, changing race profile and increasing rotational runout.
• Seal and interface fouling: process by-product deposits accumulating around race assembly, binding rotation movement.
• Premature bearing failure: damaged lower race surface accelerates ball bearing wear and shortens rotary subsystem service life.
• Refurbished unit risk: residual surface scratches; full dimensional inspection, surface metrology and spin test required before chamber installation.