1. Product Introduction The 6301-ZZ is a single-row deep groove ball bearing of 12 × 37 × 12 mm with a stainless steel shield pressed on both sides . The shields are non-contact: they sit in the outer ring groove with a small labyrinth gap and never touch the inner ring, so they stop dust, grit and chips from reaching the raceway while adding almost no friction. Inside, GCr15 chrome bearing steel rings and balls are hardened to HRC 60-62 and ground to P5 (ABEC-5) precision ,
1. Product Introduction The 6301-ZZ is a single-row deep groove ball bearing of 12 × 37 × 12 mm with a stainless steel shield pressed on both sides . The shields are non-contact: they sit in the outer ring groove with a small labyrinth gap and never touch the inner ring, so they stop dust, grit and chips from reaching the raceway while adding almost no friction. Inside, GCr15 chrome bearing steel rings and balls are hardened to HRC 60-62 and ground to P5 (ABEC-5) precision ,