20 × 52 × 15 mm. MGM bearing for industrial applications. When replacing a part, always verify the complete designation, dimensions, design and application requirements against the manufacturer documentation.
30 × 62 × 16 mm. ZKL 1206 bearing with the verified designation. Compare the complete designation, dimensional data and design with the original part. Confirm suitability for the specific bearing arrangement in ZKL documentation.  
55 × 90 × 18 mm. Single-row deep-groove ball bearing with rubber seals on both sides designation 2RS. Bore diameter d = 55 mm, outside diameter D = 90 mm, width B = 18 mm.