Portfolio of Tribology Analysesperformed by

RG Bayer, Tribology Consultant

Analyses done to resolve problem or avoid problem in wide range of applications - large

agricultural equipment to microelectronic components1960-2004

Application - appliance

Component - blower cage

Problem - wear (bearing)

Application - automotive

Component - parking break pedal

Problem - friction; lubrication (spring clutch noise & vibration )

Application - check sorter

Component - drive wheel

Problem - wear (elastomer tire; fatigue & abrasive); friction

(Debonded specimen shown)

Application - microelectronics assembler

Component - cam-follower assembly

Problem - wear (cam)

Application - microelectronics assembler

Component - tray

Problem - wear (lip)

Application - forms manufacturing

Component - universal cutter

Problem - wear

Application - computers

Component - disk drive motor

Problem - wear (bearings)

Application - computers

Component - electrical connector

Problem - wear (springs)

Application - electroerosion printer

Component - electroerosion print head

Problem - wear (electrodes)

Application - automotive

Component - balance system

Problem - wear

Application - automotive

Component - gear box plate

Problem - wear

Application - electroerosion printer

Component - ground roll

Problem - wear & paper debris

Application - impact printer

Component - hammer block assembly

Problem - wear (bearing & hammer face); lubrication

Application - impact printer

Component - hammer-pin assembly

Problem - wear (bearing & hammer face); lubrication

Application - engine

Component - injector cap nut

Problem - wear

Application - computer

Component - key board

Problem - friction (keys binding)

Application - impact printer

Component - hammer

Problem - wear (hole, impact surfaces, sides); lubrication

Application - molder

Component - injector pin

Problem - wear (galling & scuffing)

Application - scanner

Component - MR (magnetoresistive) head

Problem - abrasion (tip)

Application - paint sprayer

Component - drive assembly

Problem - wear (joint)

Application - impact printer

Component - gear

Problem - wear (teeth)

Application - impact printer

Component - print band

Problem - wear (font)

Application - impact printer

Component - print band

Problem - wear (back)

Application - impact printer

Component - armature (broken)

Problem - elastomer wear (backside (pole face) & front (push rod))(Specimens shown have tip broken off.)

Application - impact printer

Component - comb bar

Problem - wear (slots); lubrication

Application - computer

Component - thermal conduction module

Problem - wear (due to vibration, shock, & thermal cycling)

Application - impact printer

Component - head carrier

Problem - wear (several surfaces); friction (bearings)

Application - paper manufacturing

Component - wear plates

Problem - wear

Application - copier

Component - toner cartridge

Problem - wear (blade)

Application - impact printer

Component - type carrier

Problem - wear (backstop, pin, & type)

Application - impact printer

Component - type

Problem - wear (face, back & hole)

Application - impact printer

Component - type slug

Problem - wear (guide surfaces and type face); lubrication

Application - wind turbine

Component - bearing

Problem - wear; lubrication

Application - wind turbine

Component -thrust bearing

Problem - wear; lubrication

Application - computer

Component -ZIF (Zero Insertion Force) connector

Problem - wear (contact spring); lubrication

Application - computer

Component - PC board

Problem - wear (contact tab); lubrication