Product Description
8N7767, 8N-7767 Main Bearing
Engine Bearings For CAT Caterpillar Machines
Oversize = 0.025 " in (.63MM)
Undersize = STD
Engine Model: D379B, D398, D398A, D398B, D399, G398, G399
Undersize= when the crankshaft has been re-ground
Oversize= When the Cylinder block has been bored to use " Oversize" O.D. Bearings
CTP Tri-Metal bearings (F780) are steel back bearings made of copper alloy, lead and tin with a nickel dam and finished with an electroplated Babbitt surface layer. The F780 alloy has a higher load carrying capacity than aluminum or other copper/lead alloy bearings. Tri-metal bearings can withstand up to 60% higher loads. As a result of this advance technology material, F780 will provide longer life in normal operation and significantly improved fatigue resistance under extreme operating conditions.
