A professional who assembles outer rings, inner rings, bearings, and retainer guards to form ball bearing assembly unit used in manufacture of gyros and other commercial equipment. Responsibilities include:

• Selects inner ring and places it on pedestal jig.
• Selects outer ring and places it on pedestal jig.
• Picks up ball bearings of specified size and number, using magnetic and nonmagnetic needles.
• Inserts bearings between outer and inner rings, spacing them with nonmagnetic needle.
• Selects and inserts retaining guard into ball bearing unit assembly.
• Tests finished assemblies with gauge to determine accurate radial play.
• May secure ball bearings in position, using rivets and riveting press.
• May disassemble finished ball bearings rejected, during final inspection.