NJ 221 ECJ

NJ 221 ECJ – Cylindrical roller bearings for high load capacity in a compact design

Quality that safeguards processes
This bearing can withstand very high radial loads with low friction and, depending on its design, can handle limited axial forces. This results in smooth running and reproducible results. By carefully selecting the bearing clearance or preload, concentricity remains stable and quality can be predicted.

Design and manufacturing quality
The cylindrical rollers run with linear contact; a logarithmic roller profile relieves stress on the edges. Precise flange guides promote the lubricating film, and separable rings facilitate assembly and inspection. In the NJ design, two flanges on the outer ring and one flange on the inner ring guide the rollers; axial guidance is provided in one direction. Depending on the version, a steel cage is included (J).

Convincing in everyday life
In operation, this results in high load-bearing capacity despite a compact design, stable temperature and vibration levels, and predictable quality even under fluctuating loads and speeds. Precise alignment remains important because angular adjustability is limited.

Summary
Conclusion: high load-bearing capacity, low friction and easy assembly for stable, predictable processes in continuous use.