Metso Select™ / Premier™ SAG Mill Liners and Core Spares

Manufacturer image of a Metso Select™ SAG mill, showing the shell, feed and discharge ends, trunnions and drive arrangement.

Existing site photograph showing Metso branding and a large SAG mill. It identifies the equipment category only; confirm the model from the nameplate and drawings.

Existing photograph of mill liners bearing Metso branding, showing large liner segments and lifting profiles. It does not establish a drawing number or applicable model.

OEM Equipment Page

Identify spares by SAG installation dimensions, liner position and heavy-duty drive arrangement

This page supports identification and supply of Metso SAG mill spares. Select™ is a pre-engineered horizontal mill range; Premier™ is configured for individual projects. Before manufacturing liners, trunnions, bearings, gears or drive parts, check the complete model, nameplate or serial number, diameter, EGL, drive, feed and discharge ends, liner arrangement, OEM drawing number, drawing revision, used-part photographs and actual interfaces together.

31 models Manufacturer-published Select™ SAG pre-engineered models

3.80–9.00 m Published Select™ SAG diameter range

1.90–4.50 m Published Select™ SAG EGL range

400–7,800 kW Published Select™ SAG power range

Standard Models and Key Dimensions

Published Select™ SAG Range and Premier™ Project Identification

The table gives the standard model count and key ranges needed to identify spare parts. Metso's 2025 Select™ brochure lists 31 pre-engineered SAG models and overall dimensional ranges. Dimensions, power ratings and part numbers not publicly matched to individual machines are not presented as verified fixed models. Identify Premier™ installations from project records.

Equipment series	Standard models / key dimensions	Spare-part identification checks	Product status
Metso Select™ SAG Mills	31 pre-engineered models; diameter 3.80–9.00 m; EGL 1.90–4.50 m; power 400–7,800 kW	Check nameplate model, diameter, EGL, gear drive or actual drive arrangement, feed and discharge ends, liner layout, trunnion bearings and OEM drawings	Current published product range
Metso Premier™ SAG project solutions	Project-engineered horizontal SAG mills; the current manufacturer page does not provide a single standard model table for direct spare-part replacement	Establish the match from project data sheets, nameplate, serial number, general arrangement, drive layout, liner drawings and used-part interfaces	Current project-engineered solution

The 31-model range and dimensions narrow the installation search; they are not an interchangeability list for liners, gears, trunnions, bearings or tooling. For Premier™, legacy or modified machines, the Select™ range cannot replace drawings and actual interfaces.

Wear Parts

Wear Parts and Liners: Separate Feed-End, Shell and Discharge-End Checks

SAG wear parts are grouped by systems with similar material and manufacturing requirements. Once drawing references are confirmed, this equipment page can link known numbers to part positions, applicable models, performance requirements and materials.

Feed Throat, Inner and Outer Head Liners, and Transition Rings

Feed Throat, Head Liners & Transition Rings

Covers the feed throat, inner and outer head rings, transition rings and adjacent shell liners. Check the feed end, inlet profile, head segmentation, holes, bolts, retention, material drop direction, adjoining liner interfaces and wear records.

Material review: Candidate materials must withstand large-ore impact, sliding wear, grinding media and cyclic end loads. Select the material and section for the actual operating conditions.

High-manganese steel information Chromium-molybdenum alloy steel information Rubber and polyurethane information

Open the Common Part Page →

Shell Liners, Lifters and Manhole Area

Shell Liners, Lifters & Manhole System

Protect the shell, lift ore and steel balls, and control their trajectory. Check diameter, EGL, layout, lift height, individual profiles, wear direction, manhole liners, holes, retention, maintenance access and set quantities.

Material review: Select metal, rubber or composite liners by zone according to impact energy, abrasion, grinding media, temperature, structural strength and service-life targets.

Chromium-molybdenum alloy steel information High-chromium wear material information Rubber and polyurethane information

Open the Common Part Page →

Discharge Grates, Pulp Lifters and Discharge Cone

Discharge Grates, Pulp Lifters & Discharge Cone

For SAG mills with grate discharge, covering grates, inner and outer pulp lifters, the discharge cone and filler rings. Check the end, openings and passages, rotation direction, channel segmentation, inner and outer rings, discharge method, trunnion interfaces and anti-blockage requirements.

Material review: Select discharge-end materials and structures for slurry erosion, ball retention, local impact, blockage risk, passage integrity and adjoining-part interfaces.

High-chromium wear material information Chromium-molybdenum alloy steel information Composite wear material information

Open the Common Part Page →

Spare Parts

Gear Drives, Trunnion Bearings and Heavy-Duty Spares

General SAG spares include girth gears and pinions, trunnions and main bearings, motors, gearboxes, couplings, inching drives and critical connections. Available information supports structural identification only; fixed tooth geometry, materials, heat treatments, dimensions and OEM order numbers are not published without installation drawings.

Girth Gear, Pinion and Gear Drive

Girth Gear, Pinion & Gear Drive

For installations that use a gear drive. Check module, tooth count, pressure and helix angles, face width, rotation direction, split construction, shaft bore, center distance, tooth-surface treatment, lubrication and the mating pinion.

Material review: Confirm gears and pinions against torque, fatigue, tooth contact, lubrication, accuracy, heat-treatment and inspection requirements.

Drive alloy steel information

Open the Common Part Page →

Trunnions, Main Bearings, Bearing Liners and Housings

Trunnion, Main Bearings, Bushings & Housings

Support the large rotating assembly and form the feed and discharge passages. Check feed or discharge end, journal, head flange, fixed or floating end, bearing type, bearing liners, oil passages, seals, housing, machining datums and nondestructive testing.

Material review: Confirm load-bearing trunnion and housing materials, bearing and sliding materials, seals and lubrication against load, temperature, clearance, speed and drawings.

Drive alloy steel information Bushing and sliding material information Engineering plastics for seals

Open the Common Part Page →

Main Motor, Gearbox, Couplings and Inching Drive

Motor, Gearbox, Couplings & Inching Drive

Confirm the motor, gearbox, high- and low-speed couplings, torque limitation, braking, inching drive, lubrication and controls against the installed drive arrangement. Check power, speed, ratio, torque, shaft ends, mounting, controls and rotation direction together.

Material review: Confirm shafts, gears, couplings and connections against torque, fatigue, accuracy, heat treatment, lubrication and inspection requirements.

Drive alloy steel information

Open the Common Part Page →

Feed Chute, Discharge Trommel and Critical Interfaces

Feed Chute, Trommel & Critical Interfaces

The published Metso Select™ scope includes feed chute or spout and discharge trommel options. Confirm whether each is installed, then check flanges, seals, liners, supports, screen media, maintenance access and adjacent equipment.

Material review: Review flow-path liners, connectors and seals by zone according to material, wear, corrosion, vibration, temperature and available installation space.

Composite wear material information Engineering plastics for seals

Open the Common Spare-Parts Catalogue →

Special Tooling

Relining Tools with Documented SAG Applicability

Only the Tube Mill Reline Machine, explicitly identified by Metso for smaller SAG and ball mills, is shown. Applicability of other MRM, jacking, bolting or transport tools requires the specific SAG opening, dimensions, liners, lifting requirements and site layout.

Tube Mill Reline Machine for Smaller SAG and Ball Mills

Tube Mill Reline Machine

Metso describes Tube MRM as a compact relining solution for smaller SAG and ball mills. A fixed three-axis hydraulic lifting structure assists liner handling and positioning. Suitability for a particular SAG still depends on the opening, dimensions, liners, lifting, deck and site safety conditions.

Material review: Tooling is not selected as a wear-part material. The associated liners, lifting points, bolts, loads, structure and safety conditions require a separate technical review.

Submit SAG Tooling Application Details →

Drawing and Part Numbers

Match Metso SAG Drawings, Third-Party References and Used Parts

Published information identifies series, model counts and dimensional ranges. It does not justify presenting unverified liner, grate, lifter, gear, trunnion, bearing or tooling numbers as general order numbers. Match known OEM references, third-party numbers or used-part information after checking model, position and drawing revision.

Submit Metso OEM Drawing Numbers, General Arrangements or Liner Drawings Check Select / Premier, diameter, EGL, feed and discharge ends, liner position, discharge structure, drawing revision and actual interfaces Submit Third-Party Numbers or Used-Part Photographs Identify feed-end, shell or discharge-end liners, grates and lifters, girth gears, pinions, trunnions, bearings, drives or connectors Submit Feed Material and Wear Records Select materials and manufacturing methods according to ore, grinding media, particle size, impact, abrasion, corrosion, temperature, blockage and failure mode

Identification rule: Establish part-number applicability only when the complete model, diameter, EGL, drive, feed or discharge end, discharge method, installation position, drawing number and revision, and actual interfaces agree. The Select™ range of 31 models, a Premier™ project name or similar appearance cannot replace OEM drawings.

What is needed to quote Metso SAG liners, drive or load-bearing spares?

Provide the Select or Premier series, complete nameplate or serial number, diameter, EGL, drive, feed and discharge ends, discharge structure, drawing number or drawings, used-part photographs, interface dimensions, materials and actual operating conditions.

Are the Select™ SAG series, 31-model range or mill diameter enough for manufacture?

No. They only narrow identification. Liners require position, layout, holes and retention checks; grate-discharge parts require flow passages and rotation direction; drive and load-bearing parts also require tooth geometry, shaft ends, bearing structure, drawing revision and actual interfaces.

Does the Tube Mill Reline Machine fit every Metso SAG mill?

No. Metso identifies it for smaller SAG and ball mills. Actual suitability depends on the mill opening, dimensions, liners, lifting requirements, deck, site layout and safety conditions.

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Metso Select™ / Premier™ SAG Mills

Identify spares by SAG installation dimensions, liner position and heavy-duty drive arrangement

Published Select™ SAG Range and Premier™ Project Identification

Wear Parts and Liners: Separate Feed-End, Shell and Discharge-End Checks

Feed Throat, Inner and Outer Head Liners, and Transition Rings

Shell Liners, Lifters and Manhole Area

Discharge Grates, Pulp Lifters and Discharge Cone

Gear Drives, Trunnion Bearings and Heavy-Duty Spares

Girth Gear, Pinion and Gear Drive

Trunnions, Main Bearings, Bearing Liners and Housings

Main Motor, Gearbox, Couplings and Inching Drive

Feed Chute, Discharge Trommel and Critical Interfaces

Relining Tools with Documented SAG Applicability

Tube Mill Reline Machine for Smaller SAG and Ball Mills

Match Metso SAG Drawings, Third-Party References and Used Parts

What is needed to quote Metso SAG liners, drive or load-bearing spares?

Are the Select™ SAG series, 31-model range or mill diameter enough for manufacture?

Does the Tube Mill Reline Machine fit every Metso SAG mill?

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Submit Your Metso SAG Model, Drawing References, Drawings or Used-Part Details

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