Tough and Long Life (TL) Spherical Roller Bearings

NSK’s TL spherical roller bearings deliver high strength resistance to hoop stress and inner ring cracking that frequently occurs due to rapid temperature rise in paper machine dryer cylinders. Through advanced material and carbonitriding technologies, bearing failure incidents, machine downtime and maintenance costs are significantly reduced.

Design Features

Optimized, high-capacity internal design
Inner rings manufactured with proprietary TL alloy composition and carbonitriding process
With cylindrical and tapered bore
With heavy-duty machined brass cage; pressed steel cages with wear-resistant surface treatment utilized for a limited range, or available on request
Radial internal clearances C-normal, C3, C4 and C5
Dimension series 222, 223, 230, 231, 232, 239, 240 and 241
For shaft diameters ranging from 40 to 1000 mm

Operating Benefits

Optimized bearing load distribution with Finite Element Method (FEM) analysis
High-capacity design supports wide web widths
Tapped holes on both sides of middle ring simplifies mounting / connection to drive

Fields of Application including

Paper making machinery

Success Stories

NSK TL Bearings Fix Dryer Failures – $226k/yr Saved

NSK’s Tough and Long Life (TL) bearings resolved 3-4x/yr thermal cracking failures in dryer cylinders, delivering 10+ years of reliable operation and $226k annual savings.

Technical Tools

CAD Downloads

Download NSK Spherical Roller Bearings CAD drawings here.

Technical Calculations

Use the online tool to search for the right spherical roller bearings for your application.

eStore & Online Catalog

NSK eStore*

Search for part numbers, check stock, explore technical details, and order online*—visit the NSK eStore.

*To order online, you must have a registered account.