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Used Wensui Mixing Mill

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Overview

A mixing mill (two-roll mill) is a heavy-duty roller machine used to mix, disperse and sheet rubber and plastic compounds. It squeezes material between counter-rotating rolls to achieve uniform blending of polymers, fillers, pigments and additives, and is often used for lab-scale batches to production preforming. Key features include roll heating/cooling, adjustable nip gap, speed controls and safety guards.

FAQ

What should I inspect when buying a used mixing mill?

Check roll surface condition (grooves, scoring), roll alignment and gap accuracy, gearbox and drive noise, motor hours, heating/cooling systems, controls, electrical wiring, and wear on bearings and gears. Ask for maintenance records and a test run.

How is a mixing mill typically shipped and what should I prepare?

Mixing mills are heavy and often shipped on flatbeds. Confirm lifting points, securement methods, and whether disassembly is needed. Use experienced heavy-equipment carriers, crate fragile controls, verify weight/dimensions for permits, and arrange insurance and customs paperwork if international.

What regular maintenance keeps a mixing mill reliable?

Keep rolls clean and free of residue, check and adjust roll gap and alignment, lubricate bearings and gearboxes per schedule, inspect seals and belts, test heating/cooling circuits, and verify safety interlocks. Replace worn bearings and monitor motor vibration and oil condition.