Tamiya Manta Ray DF-01 Bearing Kits. Motor Bearings- EMQ (Electric Motor Quality) Bearings to suit Tamiya Electric Motors, available in Steel or Ceramic. Ceramic Bearings can run faster than all steel bearings due to the lower centrifugal force generated by the ceramic balls, ceramic balls are lighter and harder than steel, the speed increase for Ceramic Bearings is 30 – 40% with adequate lubrication.
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