Feed Throat Liner
Throat Liner
METSO · Part Details
SAG Mill Liner and Lifter System
SAG Mill Liner and Pulp Lifter System
Identify parts for Metso SAG mills, check machine models and drawing references, review material and manufacturing requirements, and prepare an inquiry.
Key Parts Covered
This page identifies installation positions that share the same wear-resistant material and manufacturing process requirements.
Feed-End Inner Liner
Inner Head Liner
Feed-End Outer Liner
Outer Feed Head Liner
Shell Lifter Plate
Shell Lifter Plate
Discharge Grate
Discharge Grate
Intermediate Discharge Liner
Middle Liner
Outer Pulp Lifter
Outer Pulp Lifter
Inner Pulp Lifter
Inner Pulp Lifter
Discharge Cone
Discharge Cone
Filler Ring
Filler Ring
Materials and Processes
Select the material grade and heat treatment for the operating conditions, processed material and equipment specifications. The options below are commonly used; confirm the final grade against the drawing and technical agreement.
Confirm against the OEM specification
Select materials to suit OEM specifications and operating conditions; confirm the final grade and heat treatment against the drawing.
Wear and Replacement Criteria
Common wear patterns and maintenance guidance are outlined below. Determine replacement intervals from operating conditions, processed material and equipment performance data.
Common Wear Patterns
- Material impact and sliding abrasion reduce surface thickness
- Localized impact causes dents and plastic deformation
- Prolonged wear exposes the base metal
- Wear around bolt fixing points causes the liner to loosen
Replacement Criteria
Assess replacement against the remaining-thickness limits in the equipment manual and drawings. Stop the equipment for inspection and corrective action if through-cracks or fastening failures occur.
Equipment, Models and Drawing References
Identify the installed machine model and key dimensions, then check the part number, drawing number, drawing revision and physical interfaces.
Equipment Series
Metso SAG Mills
Models and Key Dimensions
Metso SAG Mill Range
Drawing Number / Part Number
Provide Your OEM Part Number
Drawing Revision
Confirm dimensions by measuring the sample or using the customer drawing. Cross-check the drawing revision against the model on the equipment nameplate.
Materials and Process Control
Materials, heat treatment, composite construction and inspection requirements depend on the specific drawing, operating conditions and technical review.
Material Grade / Substrate
Confirm against the OEM specification
Heat Treatment Condition
Follow the applicable standard for the material grade; confirm heat treatment and hardness requirements against the drawing
Composite / Hardfacing Requirements
Follow OEM design requirements; confirm any hardfacing or composite construction against the drawing
Dimensions and Inspection
Inspect key dimensions against the drawing for the OEM part number. Check mounting and sealing surfaces individually and perform UT/MT non-destructive testing on castings.
Parts with the same name may not be interchangeable because of differences in machine model, drawing revision, mounting interface or material specification. Use the complete model, serial number, drawing number and drawing before manufacture.