Knowledge
Technical notes for better bearing decisions.
Short, sourced guides on the details that decide whether a bearing runs quietly for years or fails early.
Radial clearance chart
Verified C2 / CN / C3 / C4 / C5 ranges by bore size, with the measurement conditions that matter.
Open the clearance chartFrequently asked questions
MOQ, samples, documents, customisation and ordering — answered briefly.
Frequently asked questionsHow to read a deep groove ball bearing suffix code
A full order code packs six decisions into one line: what 6203-2RS/C3 P6 ZV4 says about series, bore, seals, clearance, precision and noise, and why suffix order differs.
Read articleRadial clearance explained: C2, CN, C3, C4 and C5
Why radial clearance decides noise and running temperature in small motors, how C3 differs from the normal group, and the verified ISO 5753-1 ranges up to C5.
Read articleNoise grades for motor bearings: ZV1 to ZV4, EMQ and CM
What ZV1 to ZV4, EMQ and CM actually specify, how bearing vibration is measured, and why grease fill, cage and seal choice change the sound of a motor bearing.
Read articleBearing handling and storage: a practical checklist
Storage, rust prevention, press fits, heating and contamination control: a practical checklist for keeping bearings within specification after they leave the packing line.
Read articleTell us the model, the quantity and the application.
Send a drawing or a sample request and we will confirm dimensions, lead time and price. Photos and drawings can be uploaded with the inquiry.