5211 Nachi Double Row Angular Ball Bearing 55mm x 100mm x 33.3mm Made in Japan 5211 Nachi Double Row Angular Ball Bearing, Made in Japan, inner diameter is 55mm, outer diameter is 100mm and width is 33.3mm. * Item: 5211 Ball Bearing * Type: Nachi Double Row Angular Ball Bearing * Closures: Open * Dimensions: 55mm x 100mm x 33.3mm/Metric * ID (inner diameter)/Bore: 55mm * OD (outer diameter): 100mm * Width/Height/thickness: 33.3mm * Size: 55 x 100 x 33.3 mm * Quantity: One Bearing * Dynamic load rating Cr: 67,500 N * Static load rating Cor: 56,500 N * Limiting Speed: * Grease Lubrication: 4,500 RPM * Oil Lubrication: 6,300 RPM * Made in Japan Nachi Double Row Angular Contact Bearing The construction of this type ball bearing is similar to the adjacent, BACK-TO-BACK mounting of two Single-row Angular Contact ball bearings. Because fewer balls can be inserted per row compared to Single-row Angular Contact ball bearings, a Double-row Angular Contact ball bearing will have less load capacity than an equivalent size/series BACK-TO-BACK set of two Single-row Angular Contact ball bearings. This bearing type can sustain radial, moment and bi-directional axial loads.