Six Key Features in a High Temperature (HT) Mounted Bearing – by PT International Corp.

High temperature applications require mounted ball bearings that don’t just withstand the heat, but that also ensure your application remains safe and operational. Here are six (6) key features to look for when choosing a high temperature (HT) mounted ball bearing:

1. High Temperature Lubrication: A high temp bearing will still fail prematurely without the correct lubrication. Lube fill rates are typically 35 to 55%, but for low speed or frequent wash-downs, we recommend higher fill rates.*
2. C4 Internal Clearance: C4 ensures there is more internal clearance to accommodate thermal growth of races vs. the standard C3 clearance.
3. Heat Stabilized Races & Steel Cages (aka Retainers): Why? These can handle higher temperatures and the cage will not become brittle like polyamide or glass fiber cages.
4. Anti-Rotation Pins on the Bearing Insert’s OD (Outer Diameter): These help to both align the insert easily and restrict rotation due to temperature fluctuations.
5. High Temperature Silicon Bearing Seals: These provide added protection from elevated temperatures and corrosive environments up to 390F (200C). Stainless steel flingers are standard on PTI high temperature bearings and can be removed if needed.
6. Clearly Marked and Tagged Housings: Last but not least, it’s crucial that those individuals installing and maintaining the bearing will recognize it as a high temperature bearing and will use the proper lubrication.

*PTI Engineers are available to help consult on proper lubrication options for heavy load applications.
PTI’s high temperature (HT) bearings can be installed in any of our 700 Metric or American Standard housing types. HT inserts from 1/2″ to 3-1/8″ and from 12mm to 80mm shaft sizes are stock. Click here to view more about our High Temperature Mounted Ball Bearings.

About PTI: P.T. International Corp. (PTI) offers a wide range of European Metric and American Standard Industrial Power Transmission Products. We have mounted ball bearings, spherical roller bearings, SAF and SDAF split pillow blocks, SN/SNG and SD split Plummer blocks, split block accessories and more. We stock a full-range of split pillow/Plummer blocks up to 21 inches and 400mm. Think of PTI or those “hard-to-find” large housings, spherical roller bearings and accessories.

Want to learn more about PTI? Click here to view our company overview video. Check out other videos, information and more at www.ptintl.com.