This standard bearing configuration stands up to frequent high impacts and side loads. The bearings meet or exceeds all criteria for ABEC-9 rating.
By using Superior Steel in the bearings Seismic is able to achieve superior concentricity, durability, and smoother balls.
The Superior steel and advanced heat treatment result in a 50% tougher, stiffer, and thicker casing. This allows the ball raceways to maintain a smoother polish for longer, spin truer, and resist flexing from hard impacts.