21308EAKE4 NSK SIR 8.91 40x90x23mm Spherical roller bearings
Bearing number 21308EAKE4 Size (mm) 40x90x23 Brand NSK Bore Diameter (mm) 40 Outer Diameter (mm) 90 Width (mm) 23 d 40 mm D 90 mm B 23 mm C 23 mm r min. 1.5 mm da min. 49 mm da max 54 mm Da min 75 mm Da max. 81 mm ra max. 1.5 mm