| 1. and 2. Kingpin (Rivet) & Kingbolt – Holds the mounting plate and yoke assembly for a swivel caster together. |
| 3. Mounting Bolt Holes – Where the bolts attach the caster to the cart. |
| 4. Top Plate – The plate which attaches the caster to the application. |
| 5. Load Race – Row of steel balls or rollers that allow the yoke base to swivel. |
| 6. Load Ball Bearings – One or two row of steel balls or rollers. |
| 7. Yoke Base – Flat part of the yoke which the legs attach to. |
| 8. Zerk Fitting – Fitting that is provided for injecting grease into the caster. |
| 9. Thrust Race – Holds the thrust bearings in the yoke base. |
| 10. Legs – Supports the axles. |
| 11. Axle Hole – Holes that hold the axles. |
| 13. Button – Forms the lower raceway of the Thrust Race. |
| 14. Kingpin Nut – Holds the swivel section together. |
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