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Practical notes from fifty years of matching bearings to machines: reading part numbers, choosing seals and clearances, and finding the hard-to-find ones.
Most motors use a deep groove ball bearing at each end, usually with C3 clearance. Here is how to find yours and order the right one the first time.
Read article: Which bearing does my electric motor need? Size, C3 and sealing explainedAn angular contact bearing carries radial and axial load together because the balls touch the rings at an angle. Here is how they work and how to order one.
Read article: Angular contact bearings explained: contact angle, pairs and where they are usedA bearing that fails early is nearly always telling you something. Here are the seven most common causes, what they look like and how to stop them.
Read article: Why bearings fail: the seven most common causes and how to prevent themThe five big names all make bearings to the same standard sizes. Here is how to choose between them, and why avoiding fakes matters more than the brand.
Read article: SKF, FAG, NTN, NSK or KOYO: which bearing brand should you buy?A short guide for first-time buyers in Mumbai: what to bring to the shop, what to ask the dealer, and how to be sure the bearing is genuine.
Read article: Buying bearings in Mumbai: what to bring, what to ask, and how to avoid fakesZ3V3 on a bearing box has nothing to do with size or seals. It is a noise and vibration grade. Here is what the Z and V numbers mean, and when they matter.
Read article: What does Z3V3 mean on a bearing?An F in front of a bearing number means a flange on the outer ring. Here is what the flange does, how to read flanged part numbers, and what to measure before you order.
Read article: Flanged bearings explained: what the F in F623ZZ meansMR bearings are thin miniature ball bearings, and their numbers hide the size in plain sight. Here is how to read them, with a size table from MR84 to MR128.
Read article: MR bearing sizes: a guide to MR miniature bearingsNo readable number on the old bearing? Measure the bore, outside diameter and width with a vernier caliper, then match them to the size chart. Here is how.
Read article: How to measure a bearing and find its numberThe numbers stamped on a bearing tell you its type, size, seals and clearance. Here is how to read them, so you order the right part the first time.
Read article: How to read a bearing number: 6204 2RS C3, decodedSend it to us. We will tell you what it is, what it costs, and how soon it can be at your door.
