Day: October 9, 2026

Backup Roll Keeps Crawling Out Axially? Don’t Just Torque the Lock Nut — Check These 4 Clearances

Recurring backup roll axial displacement is usually not a lock nut problem. In about 8 out of 10 cases the root cause sits in one of four clearances or force losses: chock-to-housing-window clearance, lock cylinder pressure or disc spring preload decay, thrust bearing wear, or thermally induced axial force. This guide shows how to measure […]