* Real 450,000rpm speed * Dedicated P4/ABEC7 precision * Stainless steel (9Gr18) & ceramic(Si3N4) materials * High-end textolite based phenolic cage
SR-144ZT (3.175*6.35/5.97*2.38mm)SR-144ZTG (3.175*6.35/5.97*2.78mm)SR-144ZK (3.175*6.35*2.38mm)SR-144ZKG (3.175*6.35*2.78mm)SFR-144Z (3.175*6.35/7.5*2.78mm)S: Bearing material is stainless steelT: Outer ring with shoulder
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