How to Inspect a Used Slitting Line Before Buying

Start with the machine identity and scope

Before judging price, confirm the equipment type, working width, thickness range, coil capacity, manufacturer, manufacturing year and current location. For a used slitting line, the buyer should also confirm whether the listed equipment includes the uncoiler, pinch feeder, leveler, slitter head, scrap handling, tension stand, recoiler, hydraulic system and electrical cabinet.

Check the uncoiler and entry section

Inspect the uncoiler structure, mandrel expansion, braking condition, coil car, entry guide and pinch feeding system. If the line supports multiple coil inner diameters, confirm the available tooling and whether adapters are included. Wear, oil leakage and incomplete accessories should be recorded before negotiation.

Inspect the leveler, slitter shaft and knife setup

The slitter head is the core of a used slitting line. Check the slitter shaft diameter, shaft runout, bearing condition, knife quantity, separator sleeves, spacers and locking system. For lines with leveling or pre-leveling, confirm roll quantity, roll surface condition and whether the leveler suits the target material thickness.

Review recoiling and tension control

The recoiler should be checked for mandrel movement, motor power, reducer condition, hydraulic expansion and finished coil quality. Buyers should ask whether the line includes tension pads, separator discs, press arms or other devices needed for stable strip recoiling.

Confirm electrical and hydraulic condition

Older used equipment often needs electrical review. Confirm motor type, drive system, PLC or control cabinet condition, wiring status, hydraulic station condition and available drawings. If the control system is old or incomplete, plan an upgrade budget before purchase.

Ask for trial running evidence

A running video is useful, but a trial run with material is better. If an on-site inspection is possible, check noise, vibration, strip tracking, burr condition, recoiling quality and line speed stability. If the machine is already dismantled, ask for more photos, previous running video and a parts inventory.

Prepare inspection questions before contacting the seller

Useful questions include: Is the machine still installed? Can it run with material? Which parts are included? Are knives and separator sleeves included? Is the electrical system complete? Are hydraulic leaks visible? Can the seller support dismantling, loading and export shipping?