Additional radial load-carrying capability compared to single-row product.
Designed to ISO/DIN specified interchangeable dimensions.
Sold as complete assembly.
NNU-1
Outer rings with solid ribs.
Lubrication grooves and holes on outer rings.
One solid brass cage.
The radial internal clearance (RIC) for the bearing assembly must be included when ordering the complete assembly.timken-CRB-NN-Brass-Cage-Large-left-angle-view.jpg
(110)Timken’s four-row cylindrical roller bearings are designed for the rigors of daily use in applications where moderate and high speeds, high radial loads, elevated temperatures and debris are constant challenges. Designed with well-balanced cross sections, these bearings provide high-radial-load capacity within the bearing envelope.
The radial internal clearance (RIC) for the bearing assembly must be included when ordering either a) the complete assembly or b) with the inner-ring set. It is advisable to order the inner-ring set independent of the outer ring set when the final grind of the inner-ring O.D. is accomplished after mounting on the roll neck.Four-Row-Cylindrical-Roller-Bearing.jpg
(84)The Timken® ADAPT™ bearing is designed specifically for continuous casters, where performance and reliability are critical to maintaining operations. The ADAPT™ bearing evolves traditional cylindrical and spherical roller bearing configurations into a new design so operators benefit from the key attributes of both types.
The bearing consists of an inner ring, outer ring and roller /retainer assembly. The retainer holds the rollers in position, creating a single assembly that prevents the rollers from being damaged during mounting and dismounting. ADAPT-Main-Family-Picture-2021.jpg
(26)The radial internal clearance (RIC) for the bearing assembly must be included when ordering either a) the complete assembly or b) with the inner-ring set.timken-A-5224-WS-TheTimkenCompany-3D-06-27-2022-left-angle-view.jpg
Ideal choice where the shaft is not practical to use as inner raceway.
Designed to meet established inch tolerances.
Maximum shaft fillet radius cannot exceed inner-ring bore chamfer as shown.
Optional centralized lubrication groove (bore) or through hole available – specify when ordering.
Designed to be axially clamped against shoulder for loose transition fit on shaft.
After mounting, for tight transition fit (keeping inner ring from rotating relative to shaft), inner-ring O.D. must not exceed raceway diameter on matching bearing.
After mounting, if O.D. of inner ring exceeds the required raceway diameter for matching bearing, ring should be ground to proper diameter while mounted on shaft.
Unmarked end of inner ring to be assembled against the shaft shoulder to ensure clearing the maximum allowable shaft fillet as indicated in tables shown.
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