Mixer Trough Liner Plate

Function

By absorbing aggregate impact and sliding abrasion, liner plates extend trough shell life from months to many years under intensive mixing duty. Consistent liner thickness ensures that the radial clearance between arm tips and the trough surface remains within specification — typically 3–6 mm — which is critical for complete paste pick-up and prevention of dead zones where unmixed material accumulates, compromising batch homogeneity. Maintaining OEM clearance also protects arm tips from ground contact, reducing arm wear rate.

Construction & quality

Plates are cut from Hardox 400 or Hardox 450 wear-resistant steel (mill-certified HB 370–430 or HB 420–480 respectively). Full-thickness certified plate is used throughout; no cladding or hard-facing overlay on standard supply. Plates are precision flame-cut or laser-cut to ±1.0 mm dimensional tolerance, countersunk for flush-face M16 or M20 hex-socket bolts in grade 8.8. Cut edges are deburred and seal-coated to prevent moisture ingress behind the plate. A custom bolt-pattern template drawn from the customer's trough shell is confirmed before cutting to ensure correct fitment.

When to replace

• Liner plate surface worn to 50% or less of original thickness (ultrasonic gauge check)
• Visible through-wear holes or cracks in any plate segment
• Concrete paste visible behind or around plate fixing bolts
• Clearance between mixing arm tips and trough floor exceeded 8 mm
• Structural trough shell showing abrasion marks around plate edges or bolt holes