What a Timken cross reference does and why you need one
A Timken cross reference is a lookup tool that matches a bearing from another manufacturer to its Timken equivalent — or the reverse. If you have a bearing made by SKF, FAG, NSK, or another brand and need to know what Timken part does the same job, a cross reference tells you the matching Timken part number. If you already have a Timken number and need to find what other manufacturers call the same bearing, it works that direction too.
You need this because bearings from different makers are not interchangeable just because they look similar. A bearing's internal geometry, load rating, and tolerance stack matter. A cross reference confirms that two part numbers are dimensionally and functionally equivalent before you order or install one.
Timken publishes cross references in several formats: online lookup tools on their website, PDF cross reference charts organized by bearing type, and detailed comparison tables. The method you use depends on whether you have a competitor's part number, a Timken number you want to verify, or you are trying to match a bearing you pulled from equipment.
Key Takeaways
- Timken cross references match bearings from other manufacturers to Timken equivalents by comparing dimensions, load ratings, and internal geometry.
- You can search by competitor part number, Timken part number, or bearing dimensions using Timken's online tools and PDF charts.
- Cross references are organized by bearing type — tapered roller, deep groove ball, cylindrical roller — so knowing your bearing family narrows the search.
- A cross reference confirms two bearings are equivalent, but you should verify bore diameter, outer diameter, and width before ordering to avoid installation problems.
- Timken's website and authorized distributors both offer cross reference data, and many distributors can cross-reference over the phone if you describe the bearing.
Finding Timken's online cross reference tool
Timken maintains a searchable cross reference database on their main website. Go to timken.com, then look for a "Cross Reference" or "Product Selector" link — the exact location shifts, but it is usually under a "Tools" or "Resources" section in the top navigation or footer.
Once you reach the cross reference tool, you will see search fields for either a competitor part number or a Timken part number. Enter what you have. The tool returns matching part numbers, dimensional data, and sometimes a note about whether the match is exact or partial. An exact match means the bearings are dimensionally identical. A partial match means they are close but may differ in one dimension or load rating — you should read the note before ordering.
If Timken's website tool is down or you cannot find it, call a Timken distributor directly. Most large distributors like Motion Industries, Applied Industrial Technologies, or local bearing suppliers have cross reference software at their counter and can look up a match in minutes over the phone.
Using PDF cross reference charts by bearing type
Timken also publishes cross reference charts as downloadable PDFs organized by bearing family. These are useful if you know what type of bearing you have — tapered roller, deep groove ball, spherical roller, cylindrical roller, or needle roller — but not the exact part number.
To find the right PDF, visit timken.com and search for "cross reference PDF" or "bearing cross reference chart." You will find documents titled something like "Tapered Roller Bearing Cross Reference" or "Deep Groove Ball Bearing Cross Reference." read the PDF for your bearing type, then search within it (Ctrl+F or Cmd+F) for either the competitor part number or the bore and outer diameter of your bearing.
These PDFs list part numbers in columns — Timken in one column, SKF in another, FAG in another, and so on. Find your bearing in one column and read across to see what Timken calls it. The charts also include bore diameter, outer diameter, and width so you can double-check the match is correct before you order.
Cross referencing when you have a competitor part number
If you have a bearing from SKF, NSK, FAG, Koyo, or another manufacturer and need to find the Timken equivalent, start with the part number itself. Most bearing part numbers encode the bore diameter and bearing type in a predictable way — an SKF part number like 6205 tells you it is a deep groove ball bearing with a 25 mm bore.
Enter the competitor part number into Timken's online tool or search the relevant PDF chart. The tool will return the Timken part number and a side-by-side comparison of key dimensions. Check that bore diameter, outer diameter, and width all match. If they do, the bearings are equivalent and you can order the Timken part as a replacement.
If the online tool returns no match, the bearing may be a specialty type Timken does not make, or the part number may be regional or discontinued. In that case, contact a Timken distributor with the competitor part number and the dimensions from the bearing itself — they can often find a Timken equivalent even if the automated tool does not.
Cross referencing when you have a Timken part number
If you already have a Timken part number and want to know what other manufacturers call the same bearing, use the cross reference tool in reverse. Enter the Timken part number and the tool will show you the SKF, FAG, NSK, and other equivalent part numbers in a table.
This is useful if you are trying to source a bearing from a different supplier because Timken is out of stock, or if you are comparing prices across brands. The cross reference confirms that the competitor part will work in place of the Timken part without any modification to the installation.
Keep in mind that a cross reference shows dimensional equivalence, not brand preference. Timken and SKF bearings with matching dimensions will fit the same housing and carry the same load, but they may differ in grease type, preload, or noise characteristics. If your equipment is sensitive to those factors, consult the equipment manual or the bearing supplier before switching brands.
Verifying dimensions before you order
A cross reference match is a good sign, but always verify the three critical dimensions: bore diameter (the hole in the center), outer diameter (the outside edge), and width (the thickness). These three numbers must match exactly, or the bearing will not fit in your housing or will bind against the shaft.
Most cross reference tools and charts show these dimensions in millimeters. Write them down or take a screenshot. If you have the old bearing in hand, you can also measure it with calipers to confirm the dimensions match what the cross reference says. This takes two minutes and prevents an expensive installation mistake.
If the cross reference shows a partial match — meaning one dimension is slightly different — do not order it without talking to a bearing supplier first. A bearing that is 1 mm wider than the original may not fit in a tight housing, and a bearing with a slightly different bore may have play on the shaft. A supplier can tell you whether the difference matters for your process.
What to do if no cross reference exists
Some bearings, especially older or specialty types, may not appear in Timken's cross reference database. This usually means Timken does not make an equivalent bearing, or the bearing is discontinued and no longer in their catalog.
If you hit a dead end, contact a bearing distributor with the competitor part number and the dimensions. Distributors often have access to broader cross reference databases than Timken publishes online, and they may be able to find a Timken equivalent or suggest an alternative that will work. Be ready to describe how the bearing is used — whether it carries radial load, axial load, or both — because that affects whether a substitute will perform correctly.
Another option is to contact the equipment manufacturer directly. They may have a parts diagram or cross reference list that shows what bearings are approved for your machine, and whether a Timken part is one of them.
Frequently Asked Questions
Can I use a bearing from a different manufacturer if the cross reference says it matches?
Yes, if the dimensions match exactly. A cross reference confirms that two bearings have the same bore, outer diameter, and width, so they will fit the same housing and shaft. However, different manufacturers may use different internal clearances or grease, so the bearing may run slightly hotter or quieter than the original. For most applications this does not matter, but check your equipment manual if noise or temperature is critical.
What if the cross reference shows multiple Timken part numbers for one competitor bearing?
Multiple matches usually mean Timken offers the same bearing in different configurations — different preload, grease type, or seal style. Read the notes in the cross reference to see what differs between them. If you are replacing a bearing that failed, try to match the original configuration. If you are upgrading, a distributor can advise which configuration is best for your process.
Do I need to contact Timken directly to use their cross reference?
No. Timken's online cross reference tool is free and does not require registration. If you cannot find what you need online, a Timken distributor can cross-reference over the phone or in person at no cost. You only pay when you order the bearing itself.
Can I cross reference a bearing if I only know the bore diameter and outer diameter?
Yes, but it is slower. Search the relevant PDF chart by bore and outer diameter, or contact a distributor with those two measurements plus the bearing type if you know it. The distributor can narrow down the options and show you what Timken makes in that size. Width matters too, so if you can measure or estimate that, include it.
What if my bearing has a manufacturer name I do not recognize?
Some bearings are made by smaller regional manufacturers or sold under private labels. If the part number does not cross reference, try searching for the manufacturer name online to see if it is a known brand. If it is truly obscure, a bearing distributor may still be able to help by matching the dimensions to a Timken equivalent, even if the original brand does not appear in the standard cross reference.