Hello, I believe that the "CM" clearance found on bearings from Japanese brands like NTN and NSK is specifically tailored for electric motors. I am curious if American and European brands such as Timken, FAG, and SKF offer a similar clearance option. Our procurement department typically buys bearings from FAG, so it would be helpful to know if they offer this feature as well. Thank you.
The "cm" designation may not be exclusive to Japanese manufacturers, as it is used for motors that require low noise levels. SKF, for example, considers a C3 clearance to be similar numerically. However, comparing actual clearances reveals subtle distinctions. Visit http://www.snhbearings.com/set_info.htm for more information on clearances.
Hello JOHN FROM PA, it's important to note that "CM" and "C3" have distinct measurements. I am searching for the specific equivalent. Additionally, could you provide information on the minimum and maximum values in the internal clearance table? This suggests that internal clearance varies within a range rather than having a fixed value.
Hello JOHN FROM PA, when comparing "CM" and "C3," it's important to note that they have different measurements. I am in search of the precise equivalent. Can you provide information on the minimum and maximum values in the internal clearance table? It seems that internal clearance does not have a fixed value but rather a range. This variation is expected in manufacturing processes due to tolerances. For example, in table 7.1, CM clearance ranges from 12 to 22 um for bore sizes between 50-80 mm. If you require a different clearance within a similar range but not labeled as CM, consult another table for a comparable option, such as "nominal" with a range of 8 to 28 um for a 50mm shaft. Keep in mind that an exact match may not be available, which is why the CM class exists. As a side note, I collaborate with a bearing manufacturer that offers CM bearings, which are standard bearings carefully chosen to meet CM clearance specifications.
I appreciate this valuable information, it has been incredibly helpful.
Indeed, most bearing manufacturers offer a similar clearance option as the "CM" found on Japanese brands like NTN and NSK. To clarify, 'CM' stands for 'Electric Motor' clearance and is critical for optimal performance in electric motors. For European and American brands like FAG, SKF and Timken, they often use 'C3', 'C4', etc. designations to represent similar clearance levels. It's notable that FAG, in particular, uses 'C3' for a similar clearance to the Japan brand's 'CM'. Always check with your manufacturer for specifics as these designations can sometimes vary slightly.
Hello! Just to pool in some insights, while "CM" clearance in NTN and NSK bearings is indeed an electric motor-specific clearance, European and American brands such as FAG, SKF, and Timken have their specific clearances geared toward the same application. For example, FAG uses the C3 clearance (larger than normal) which is comparable to the "CM" clearance offered by the Japanese manufacturers. Remember though, there could be slight differences in the clearance depending on the bearing type and size. It's always best to speak directly with the bearing manufacturer to ensure you’re getting the correct clearances for your specific application.
Yes, you're correct about the "CM" clearance from Japanese brands being specifically designed for electric motors. As for American and European brands, you might want to look into the "C3" clearance. This is typically used in these brands including FAG, Timken, and SKF, and is intended to provide similar functionality as the Japanese "CM" clearance—a bit more internal clearance to deal with potential heat expansion in operating electric motors. Always double-check with the manufacturer or distributor to make sure it fits the specifications of your specific application, though!
✅ Work Order Management
✅ Asset Tracking
✅ Preventive Maintenance
✅ Inspection Report
We have received your information. We will share Schedule Demo details on your Mail Id.
Answer: - Yes, American and European brands such as Timken, FAG, and SKF also offer specific radial internal clearance options suitable for electric motors.
Answer: - While the specific designations may vary, American and European brands do provide clearance options tailored for electric motors, which can be equivalent to the "CM" clearance from Japanese brands.
Answer: - Yes, FAG, a well-known European brand, does offer radial internal clearance options that are suitable for electric motors. You can check with your procurement department to ensure the appropriate clearance is selected for your application.
Join hundreds of satisfied customers who have transformed their maintenance processes.
Sign up today and start optimizing your workflow.