Front Wheel Ball Bearing
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National Front Wheel Ball Bearing

Part No. 510073 Warranty Details  
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Designed to provide enhanced endurance and maximum contamination exclusion while ensuring proper fit, form and function.
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Inner Diameter:1.8898 in
Outer Diameter:3.3858 in
Width:1.6535 in

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2 Questions | 3 Answers
Displaying questions 1-2
  • Q:

    Is this a sealed bearing and do I need to regrease this bearing time to time?
    Asked on 10/3/2016 by Hasan from United States

    1 answer



      Hi Hasan, I'm glad to assist you! This National Front Wheel Ball Bearing - Part No. 510073 is a fully sealed bearing. The sealed bearings are considered maintenance free and lubed for the life of the bearing. This is because they are packed with a heavy duty, lithium based grease. When the lube fully dissipates it is generally time to replace the bearing. However, this does not mean that you cannot extend the life of the bearing. When they start to feel gritty, you can remove the seals and soak the bearings. Then you can re-lube them with your lube of choice. Just keep in mind that the thinner the lube is, such as oil vs grease, the quicker it will dissipate and need to be reapplied.

      Answered on 10/5/2016 by Solomon from AAP
  • Q:

    How many come in a package?
    Asked on 8/29/2014 by Josh from Military Overseas

    2 answers



      Hi Josh, glad to serve you! This part is sold individually.

      Answered on 8/30/2014 by Steve from AAP
    • A:

      How many come in the package or do i need to replace both of them in front

      Answered on 4/23/2017 by anonymous from undisclosed
Displaying questions 1-2

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