Guides & size charts
Straight answers to the bearing questions dealers and mechanics ask us every day.
Practical bearing guides for dealers, mechanics and workshop owners: size charts, how to read bearing numbers, seal types, and how to spot failing or fake bearings.
How to read a bearing number
Learn what the digits and letters in a bearing number mean: type, series, bore size and suffixes like ZZ, 2RS, N and C3. With worked examples for 6205
Read →ZZ vs 2RS vs open bearings: which to use
ZZ bearings have metal shields, 2RS bearings have rubber seals, and open bearings have neither. Learn the difference and which to use for wheels, moto
Read →Ball bearing size chart: 6000, 6200, 6300 series
Complete deep groove ball bearing size chart in mm: bore, outside diameter and width for 6000, 6200 and 6300 series, plus 51100 and 51200 thrust beari
Read →Taper roller bearing size chart
Taper roller bearing size chart in mm: bore, outside diameter and total width for 30200, 30300, 31300, 32000 and 32200 series metric taper bearings.
Read →Signs of a bad wheel bearing (and what causes it)
Humming that rises with speed, wheel play, vibration and uneven tyre wear: the signs of a failing wheel bearing, the causes, and how to prevent repeat
Read →How to spot fake bearings
Fake bearings fail early and cost dealers their reputation. Seven practical checks for spotting counterfeit bearings: price, packaging, markings, fini
Read →Need rates or stock?
Send the bearing number and quantity on WhatsApp. We reply with availability, packing and trade rates.