What tasks need to be carried out before assembling bearings?

I’m waiting for an answer. By the way, I’m curious to know through what channels people currently purchase SKF bearings, and how to identify genuine SKF bearings.

Bearings with double sides cannot be cleaned with kerosene. Assembling SKF bearings is simple – just open the package and proceed with the assembly; be careful not to dirty the bearings.

Reply to 3# tjdxz: Do we just assemble it without checking the bearing clearance? Fake SKF bearings are everywhere these days

Reply to 4# hhbth: It’s fake? Could you tell? If it’s obvious, you’d seem too fake, right?

Reply 4# hhbth: SKF has 11 manufacturing plants in Sweden itself that produce SKF bearings, and another 61 production facilities around the world, located in various countries. SKF is able to produce bearings of the same high quality in many of these factories, such as in Argentina, Austria, Brazil, China, France, Germany, India, Indonesia, Italy, Japan, South Korea, Malaysia, Mexico, the Netherlands, South Africa, Spain, Sweden, the United Kingdom, and the United States.

Reply to 4# hhbth: Simple ways to identify genuine SKF bearings. 1. First, check the outer packaging of the bearing; generally, it has white text on a blue background with a red strip at the bottom. However, the products from the past two years include flower boxes with patterns of several SKF logos. 2. Check the production date of the bearing; if you open the packaging box of the bearing from the side, the production date and date code will be indicated on it. 3. Bearings produced after 2000 have barcodes on their packaging boxes. 4. Check the bearing model; the bearing models have suffix letters such as A, B, C, D, E, etc. These letters represent different years of production, and detailed information can be found in the attached table. 5. Pay attention to the SKF font on the trademark: the ‘S’ is narrow at the top and wider at the bottom, and there are indentations on the vertical strokes on the left side of the ‘K’ and ‘F’. 6. Check the steel stamp: The letters indicating the model and place of origin on SKF bearings can be either pickled or laser-processed. It feels smoother to the touch, and the text on fake bearings is usually engraved. 7. Check the place of origin; the origins of ball bearings are Malaysia, Italy, France, and the United States (bearings produced in the U.S. are generally used only within the U.S.) ； Origin of short cylindrical bearings: Germany ； Origin of angular contact bearings: Austria ； Origin of spherical roller bearings: Malaysia (usually for small sizes such as 2315, 2316, 2318), Sweden (for large sizes), Germany (for large sizes) ； Origin of needle roller bearings: Germany. 8. After opening the bearing package, large bearings are usually in sealed plastic bags, while small bearings are in plastic wrapping paper. The bearing has a layer of grease on it; a genuine bearing has a shiny appearance, with no rust or pitting.

Reply to 5# tjdxz: Haha, it’s hard to tell what’s true; the fact is that there are too many lies

This post was last edited by chenmin-mg on 2010-7-21 at 20:24. OP, fake SKF bearings don’t seem to be relevant to the topic of discussion; it seems pointless. SKF bearings are recommended to be installed without cleaning. Of course, secondary pollution is an exception. In the past, most bearings used were domestic, but now most bearings are imported brands such as SKF and NSK; as a result, the measurements and adjustments of axial and radial clearances that used to be carried out as required seem to have decreased. Measurements and inspections are still done, but I personally have never had to make any adjustments for SKF or NSK bearings – this shows the high standard of quality maintained by these leading bearing manufacturers. I once discussed the issue of bearings with the deputy chief engineer in charge of mechanical equipment at my company. He said that out of 3,000 bearing manufacturers across the country, only 3 meet SKF’s manufacturing and inspection standards; of course, he didn’t need to provide any authoritative evidence to back up his claim. There may be an element of exaggeration, but it shows from another perspective that there is a certain gap between domestic bearings and imported bearings, and this is an undeniable fact based on everyday use. As for SKF’s distributors in China, they can check on its official website: http://www.skf.com/skf/support/h...tributorsCountry=CN