Plastic bearing apparatus

摘要

A bearing assembly having integral molded bearing surfaces. Each bearing surface is molded within its respective inner and outer race. The use of plastic injection molded parts enables high precision with low cost to achieve a reliably rotating caster wheel. The use of integral molded bearing surfaces within the respective races eliminates the problem of having to remove flash from the molding process or concern about indentations made by ejection pins if a separate bearing part were used. The bearing assembly can also be used with a molding process wheel to further reduce the cost of production.