Locomotive starter motor
AssigneeSrc Electrical LLC
InventorsPhilip E. Lueckenotto, Jason R. Shepperly
Life of this patent
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Abstract
In accordance with the present invention, provided is starter motor including a robust end housing or casing for carrying a needle bearing arrangement. The needle bearing arrangement is generally elongated and includes a plurality of rotatable members or rollers which allows wear to spread amongst all its members, thus increasing the field service life of the starter motor. In one aspect, the needle bearing arrangement is one roller bearing. In another aspect, the needle bearing comprises two roller bearings. Also, the drive end housing is longer and larger in diameter to accommodate the larger needle bearing arrangement.
Claims15
A starter motor for a locomotive engine, the starter motor comprising:
- a motor having an armature for driving a shaft carrying a pinion which engages a ring gear of the locomotive engine to be cranked or started, said shaft being supported for rotation by a needle bearing arrangement carded by an end casing attachable to the motor, wherein said needle bearing arrangement has a length of about 2.124 inches, an internal diameter of about 0.875 inches and an outer diameter of about 1.125 inches, and wherein said needle bearing further includes a plurality of rotatable steel bearing members each having a loading rating (1M rev) of about 5,320 lbs, and which engage the shaft to allow resulting load to spread amongst the plurality of rotatable steel bearing members.
A starter motor for a locomotive engine, the starter motor comprising:
- a motor having an armature for driving a shaft carrying a pinion which engages a ring gear of the locomotive engine to be cranked or started, said shaft being supported for rotation by a needle bearing arrangement carried by an end casing of a housing attachable to the motor, wherein said needle bearing arrangement has a length of about 2.124 inches, an internal diameter of about 0.875 inches and an outer diameter of about 1.125 inches, wherein said needle bearing further includes a plurality of rotatable steel members each having a load rating (1M rev) of about 5,320 lbs, and which engage the shaft to allow resulting load to spread amongst the members, and wherein the housing has a length of between about 5.917 inches and about 6.667 inches.
Dependencies are inferred from the claim text.