Introduction
Four-row tapered roller bearings are a type of rolling element bearing. Typically, these bearings are used for applications that require both radial and axial loads and are nearly impossible with one-row or two-row tapered roller bearings. The relative axial displacement generated by the axial loads produces a vibration that can reduce the bearing life. Benefits of these bearings include: a longer service life, higher load carrying capacity, and smoother operation with low vibration and noise.
Outlined below are the components necessary for the installation of a four-row tapered roller bearing, as well as the steps involved in installing the bearing.
Components
• bearing
• adapter sleeve
• removal sleeve
• nuts
• washers
• lock washer
• bearing spacer
• seal (optional)
• gap gauge
Steps
1. Before installation, verify that the mounting housing is clean and free of foreign matter.
2. Mount the adapter sleeve onto the bearing outer ring.
3. Install the bearing onto the housing, ensuring that the adapter sleeve is properly seated.
4. Install the removal sleeve into the housing and the adapter sleeve such that the taper of the sleeve matches that of the tapered bore of the bearing inner ring.
5. Secure the bearing in place by installing the nuts and washers onto the adapter sleeve and tightening them by hand.
6. Apply a torque to the bearing mounting bolts as specified by the manufacturer.
7. Use a digital torque wrench to ensure accurate and consistent tightening of the mounting bolts.
8. Position the bearing spacer between the bearing inner ring and the housing and install the lock washer.
9. Insert the gap gauge into the bearing clearance and adjust the bearing spacing until the indicator is located in the specified range.
10. If desired, install the bearing seals.
Conclusion
Installing four-row tapered roller bearings is a detailed and precise process. The steps outlined above are the best practice for ensuring a successful installation with minimal vibration and noise. By using the specified components and following the instructions provided, mounting a four-row tapered roller bearing can be accomplished quickly and efficiently.
