Bearings

The focus of engine rebuilders is no where more finely tuned than on engine bearings. This interface between static and dynamic forces is critical to durability and the dependable power delivery. The combination of rotational and lateral forces being applied with each piston stroke is extreme and tolerance maintenance is critical to longevity as well as performance.
Bimetallic alloys have long proven to be the best all around heavy duty bearing materials and the choice of virtually all of today’s original equipment manufacturers. The combination of moisture, diesel fuelnatural fuel vapors and post-combustion contaminants create a corrosive crankcase environment.
Ferrous based alloys demonstrate exceptional fatigue resistance, but are more vulnerable to these corrosive conditions Still preferred for use in some older engine applications, today’s enhanced and extreme engine technology and environmental requirements are pushing the envelope in the direction of Aluminum-based materials,
AluminumSilicon alloy’s high resistance to chemical attack from these agents make it the superior choice for most of today’s demanding applications. The silicon additive enhances the operating characteristics of the material to greatly resist seizure and virtually eliminate bearing wear.
A plating-applied softer metallic layer enhances both conformability and embedability, trapping small abrasive particles before they damage crankshaft or wrist pin bearing surfaces.
Contemporary heavy duty, multi-fuel engines are pushing 1,000,000 miles before requiring a rebuild. AFA Bearings go the distance – and more.