More Info on Bearings
What Makes SuperSonic Bearings Different?
| Feature |
SuperSonic |
Most Brands |
Notes |
| 52100 chrome steel |
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SuperSonic premium steel is made in Japan - most brands use locally (China) sourced steel |
| Heat treated steel |
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Strengthens the steel and increases wear resistance |
| Honed races and balls |
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Precision honed for fast and smooth performance |
| Deep groove raceways |
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Provides lateral stability for turns and stops |
| Stepped inner race |
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Stepped inner race keeps dirt out - protects bearing interior |
| Polymer cage |
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Polymer cages are lighter than brass or steel - they also dampen vibration |
| Non-contact rubber seal |
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Non-contact rubber seals keep dirt out without adding drag - fully serviceable |
| Synthetic gel lubricant |
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Most brands use a petroleum grease or oil |
| Premium quality |
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Taiwan-made - stringent manufacturing standards - consistently high quality |
What's a stepped inner race?
Inline skate 608 bearings have 2 races - inner and outer. The outer race contacts the wheel hub and the inner race contacts the axle. To see the complete inner race, the shield or seal needs to be removed.
Our bearings feature an inner race with a step (think of a step on a flight of stairs). The inner step makes it very difficult for dirt and debris to reach the ball bearings. Clean bearings roll smoother, faster, and longer.
On bearings without a stepped inner race, dirt has a direct path to the ball bearings. The stepped inner race adds manufacturing costs but the result is a superior product.
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