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The 6410-ZZ is a double metal-shielded deep groove ball bearing measuring 50 mm bore,
The 6410-2RS is a double rubber-sealed deep groove ball bearing with 50 mm bore, 130
The 6410 is an open deep groove ball bearing with a 50 mm bore, 130 outside diameter and 31
The 6409-ZZ is a double metal-shielded deep groove ball bearing with 45 mm bore, 120
The 6409-2RS is a double rubber-sealed deep groove ball bearing measuring 45 mm bore,
The 6409 is an open deep groove ball bearing with a 45 mm bore, 120 outside diameter and 29