Replacing Cups and Cones Together
Skill Level: Easy | Special Tools: None
Timken recommends replacing the bearing cone (inner race) and bearing cup (outer race) at the same time and that both components come from the same manufacturer.
Avoid Mixing Parts from Different Bearing Manufacturers
Common Problems Caused By Mixing Parts
• Incompatible internal bearing profile
• Overall bearing width difference due to tolerance differences
• Bearing rating differences
• Surface finish variations due to different manufacturing processes and technology
• Steel quality and cleanness variations
• Steel processing and steel type variations
• Variances in worldwide bearing manufacturing quality
Timken has 56 sets of MileMate® matched wheel bearing sets available for the commercial vehicle industry. (See chart for the Timken part number and corresponding set number.)
Choose MileMate Sets Instead of Individual Inner and Outer Races?
A MileMate set is a Timken matched outer race and inner race in a convenient single box.
Convenience: The bearing components are together in one box – meaning less inventory.
Longer Bearing Life: Timken® bearings have contoured profiles on the contact surfaces, which evenly distribute the load helping to
optimize performance and life.
Matched Outer and Inner Races: International standards only mandate that the same part numbers have the same basic outside diameter, bore, width and outer race angle. This means that internal geometries and characteristics could vary from manufacturer to manufacturer.
Lower Maintenance Costs: The cost of matched parts is relatively small compared to the cost of unscheduled downtime.
TechTips is not intended to substitute for the specific recommendations of your equipment suppliers. Every reasonable effort has been made to ensure the accuracy of the information contained in this writing, but no liability is accepted for errors, omissions or for any other reason.