45 mm x 100 mm x 36 mm NSK 2309 self aligning ball bearings

We work closely with 1100 RPM maximum rpm: our 45 mm x 100 mm x 36 mm NSK 2309 self aligning ball bearings manufacturing partners to 45 mm x 100 mm x 36 mm bring Lamar parts manufacturing company Spherical Roller bearing type: the best value to customers.

What is 2309 bearing cross reference？