The 12 mm steel shaft sleeve bearing is compatible with bearing models 6001, 6201, and 6301, featuring a sleeve length of 25 mm and undersizes of 2 mm or 3 mm for specific bore adjustments. The 6001 bearing measures 12x28x8 mm, the 6201 is 12x32x10 mm, and the 6301 is 12x37x12 mm, all constructed from high-quality chrome steel (GCr15) with deep groove designs for high-speed, low-noise operation. These bearings offer robust radial and axial load capacity, suitable for applications in motors, pumps, and industrial machinery, with precision grades available such as P6 and noise/vibration ratings Z3V3 and Z4V4.