Self Aligning Ball Bearing Double Row: Weight and Dimensions: Inner (d) M: 40, Outer (D) MM: 80, Width (B) M: 2, Weigh: 0.505, Product Properties: Bore: C – Cylindrical Bor, Seal: No Seal, Cage Type: S – Steel or Standard Cag, Radial Internal Pla: Cn Normal Internal P, Precision: Standard Precision, Lubrication: Standard Lubricatio, Heat Stabilizatio: No Heat Stabilization – Temperatures up to 120 °C,