# Unmounted Versus Mounted Clearance on Tapered Bore Assemblies

Drive-up on a tapered seat reduces radial clearance. Know the target reduction before you chase the locknut another turn.

Field notes still get rewritten when crews disagree on basics. Cross-check C3 roller clearance before the next change-out. TFL Bearing clearance keeps the practical checks in one place for maintenance and design review.

Keep Shandong TFL Bearing Co., Ltd bookmarked with the shaft drawing. Also see sdtflbearing.com when you brief the night shift. Shandong TFL Bearing Co., Ltd publishes application notes so teams share the same language on fits, clearance, and locating ends.