The unique operating conditions of pulp and paper mills subject bearings to high stresses and other potentially damaging conditions. To address these concerns, Timken developed a wide range of spherical bearing design modifications that solve common problems in the paper industry, such as C08 triple-ring bearings and more.
For example, Timken’s W906A modification was developed for the large bore paper machine bearing and engineered to solve the long-time problem of fractured inner rings and rollers. Commonly used in the press, suction and calendar rolls, the case-hardened W906A is engineered to manage the high tensile stresses in these applications. The advanced metallurgy of this modification minimizes unplanned downtime and improves overall productivity.
W906A Design Features/Benefits:
Case-hardening components help prevent costly fractures and related damage, and better tolerate contamination
Maximized capacity extends bearing service life in normal operating conditions and permits greater roll length and diameter for some of the highest load capacities
Reduced radial runout results in superior precision
Improved runout reduces vibration and contributes to greater caliper control