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.
- ISO K14X19X10 needle roller bearings
- Normal Duty
- Setscrew Ball Bearing
- ISO 7201 ADB angular contact ball bearings
- Normal Duty
- Setscrew Ball Bearing
- 800 mm x 1150 mm x 155 mm ISO NUP10/800 cylindrical roller bearings
- Normal Duty
- Setscrew Ball Bearing
- 596,9 mm x 685,8 mm x 31,75 mm ISO 680235/680270 tapered roller bearings
- Normal Duty
- Setscrew Ball Bearing
- ISO 3304 angular contact ball bearings
- Normal Duty
- Setscrew Ball Bearing
- 100 mm x 145 mm x 22,5 mm ISO JP10049/10 tapered roller bearings
- Normal Duty
- Setscrew Ball Bearing
- 85 mm x 180 mm x 41 mm ISO 6317 deep groove ball bearings
- Normal Duty
- Setscrew Ball Bearing
- 560 mm x 1030 mm x 365 mm ISO 232/560 KCW33+AH32/560 spherical roller bearings
- Normal Duty
- Setscrew Ball Bearing
- 35 mm x 92 mm x 49,2 mm ISO UCFCX07 bearing units
- Normal Duty
- Setscrew Ball Bearing
- 55 mm x 72 mm x 9 mm ISO 61811 ZZ deep groove ball bearings
- Medium Duty
- Setscrew Ball Bearing
- 400 mm x 600 mm x 148 mm ISO NJ3080 cylindrical roller bearings
- 307 Series
- Expansion
- ISO BK1512 cylindrical roller bearings
- Normal Duty
- Setscrew Ball Bearing