ISO Bearings
A word of caution, regarding IRC for those selecting ISO deep groove ball, cylindrical roller, and spherical roller bearings, is the “Normal” IRC shown in the tables for these bearings is not sufficient for these bearings if the bearing employs a “heavy” shaft fit. A heavy fit in most cases requires a “C3” IRC as a bearing with a “Normal” IRC could be too tight. A light to medium fit with a relatively high operating speed that generates heat also requires a “C3” IRC. If both a heavy fit is used along with a high speed, a “C4” IRC is typically required. Very few bearings with “Normal” IRC are used or stocked, with “C3” bearings being the most popular. For complicated applications, we recommend that users of our bearings contact our sales department for specific fitting and clearance recommendations.
Standard Internal Radial Clearance values for deep groove ball, cylindrical roller, and spherical roller bearings are found in Tables XV through XXII. Please note that there are different standards for metric deep groove ball bearings and inch ball bearings, as well as ISO cylindrical roller bearings and domestic cylindrical roller bearings. Also, the IRC values differ for straight bore bearings versus bearings with a tapered bore. There are no standards for tapered roller bearings. “Clearance” values for these bearings are expressed axially as “lateral” or “Bench End Play” (BEP) and are designed and specified for each application.
- Toyana 7030 A-UX angular contact ball bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana NU2992 cylindrical roller bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana CRF-33114 A wheel bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana K95x103x30 needle roller bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana 7203AP angular contact ball bearings
- Normal Duty
- Crossville, TN - DC
- Toyana 14125A/14276 tapered roller bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana 71911 C angular contact ball bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana 22216 KMBW33 spherical roller bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana HK2020 cylindrical roller bearings
- Intermediate Duty
- Setscrew Ball Bearing
- Toyana LM12749/10 tapered roller bearings
- Intermediate Duty
- Setscrew Ball Bearing
- Toyana 6200ZZ deep groove ball bearings
- Normal Duty
- Setscrew Ball Bearing
- Toyana E9 deep groove ball bearings
- Normal Duty
- Setscrew Ball Bearing