51103 Nachi Thrust Bearing 17x30x9: Made in Japan51103 Nachi Thrust Ball Bearing 17mm x 30mm x 9mm Made in Japan 51103 Nachi Thrust Ball bearing, Thrust bearing is known to high axial or Vertical loads. Made from durable 52100 alloy steel, commonly known as chrome steel. Bearing is made in Japan 51103 Nachi Ball Bearing Thrust Ball Bearing Dynamic load rating Ca: 10,800 N Static load rating Coa: 18,200 N Limiting Speed: Grease Lubrication: 6,000 RPM Oil Lubrication: 9,100 RPM Dimensions: 17mm x 30mm