Ball Mill Spare Parts

Ball Mill Trunnion

Heavy cast-steel mill trunnions machined for bearing contact, load transfer and reliable material passage.

Drawing-based supplyGlobal deliveryInspection documents
AGICO CEMENT branded 3D ball mill trunnion rendering
Original AGICO ball mill trunnion product photograph
Original product reference
Product overview

Ball Mill Trunnion Overview

A ball mill trunnion carries rotation of the mill cylinder, supports the machine weight and provides a channel for feed or discharge. The original page specifies integrated casting and machining with special attention to the journal that contacts the spherical bearing tile.

AGICO supplies standard and special trunnions from drawings. Casting soundness, neck geometry, journal smoothness and the cylinder connection are controlled to reduce fracture and premature bearing wear.

Technical scope

Specifications to Confirm

Values shown below preserve the original product information while identifying what must be confirmed for the actual order.

ProductBall mill trunnion
Original unit weight5–30 tons
Original processSand casting
Original material reference35# cast steel
Heat treatmentNormalized, normalized and tempered, or quenched and tempered
InspectionChemical, mechanical, UT, MT, PT and X-ray as specified
Material options

Materials and Construction

01

35# Cast Steel

Original material reference for high-load trunnion castings.

02

Machined Journal Surface

Bearing-contact area is finished for accuracy and smoothness.

03

Heat-Treated Casting

Process is selected for strength, toughness and dimensional stability.

Where it works

Applications

01

Ball Mill

Feed or discharge trunnion for cement and mineral grinding.

02

Horizontal Grinding Mill

Custom load-carrying hollow journals for rotating mill shells.

03

Tube Mill

Drawing-based trunnions for long-cylinder grinding equipment.

Correct replacement

Confirm the Correct Ball Mill Trunnion

Mill model and feed or discharge position

Casting and machining drawing

Journal diameter, bearing contact and surface finish

Material, heat treatment and NDT acceptance criteria

Controlled supply

Ball Mill Trunnion Quality Control

Material certificate and traceability review

Process inspection against the approved drawing

Critical dimensions and mating-interface verification

NDT, hardness or balance checks when specified

Identification, surface protection and export packing

Function in the plant

How the Ball Mill Trunnion Works

The Ball Mill Trunnion transmits or supports operating load through rotating and stationary interfaces. Its performance cannot be judged by outside dimensions alone. Load path, mating parts, operating environment and the condition of the surrounding equipment all affect whether a replacement will fit correctly and run reliably. AGICO therefore reviews the component as part of the machine rather than treating it as an isolated catalogue item.

For a replacement project, the most useful starting point is the current drawing together with the equipment model and site observations. Wear photographs, failure location, maintenance history and measurements taken during shutdown help distinguish normal consumption from an interface, alignment or operating problem. This review allows the quotation to state the proposed supply boundary and the information that still requires confirmation.

Engineering selection

Ball Mill Trunnion Selection Criteria

Confirming the following groups of data reduces dimensional risk and avoids selecting the Ball Mill Trunnion from a name or model reference alone.

01

Applied radial, axial and transient loads

Provide the available values, drawing references and photographs for applied radial, axial and transient loads. AGICO will compare them with the proposed Ball Mill Trunnion configuration and identify any missing inputs before the manufacturing basis is released.

02

Operating speed, direction and duty cycle

Where site data differs from an old drawing, mark the measured value and the measurement position. The final requirement should be agreed against the approved drawing rather than assumed from a nominal equipment designation.

03

Mating diameters, fits, datums and bolt pattern

Provide the available values, drawing references and photographs for mating diameters, fits, datums and bolt pattern. AGICO will compare them with the proposed Ball Mill Trunnion configuration and identify any missing inputs before the manufacturing basis is released.

Controlled production

Manufacturing and Inspection Route

The production route for the Ball Mill Trunnion is established after drawing review. It typically coordinates casting or forging route, heat treatment and rough machining. Process hold points depend on material, geometry and the buyer's inspection requirements. Critical datums and machining references are identified early so that later operations protect the interfaces used during installation.

Inspection is planned around product risk rather than added only at final dispatch. Material traceability and heat-treatment records; Critical journals, bores, faces and runout; Specified NDT at highly stressed transitions; Balance, contact pattern or assembly checks when applicable. When a test or report is required, it should be listed in the enquiry so that sampling, acceptance criteria and document format can be agreed before manufacture. Final release checks also confirm marking, quantity, surface protection and the packing list.

Plan the shutdown

Inspection and Replacement Indicators

Maintenance teams should evaluate the Ball Mill Trunnion together with its mating parts and operating records. Typical reasons for closer inspection include:

Unusual vibration, noise or temperature near the component. Record the location, extent and operating condition, then compare the finding with the equipment maker's limits and the site's maintenance procedure before deciding whether repair or replacement is appropriate.

Cracks, scoring, fretting or uneven contact marks. Record the location, extent and operating condition, then compare the finding with the equipment maker's limits and the site's maintenance procedure before deciding whether repair or replacement is appropriate.

Loss of alignment, excessive runout or repeated seal failure. Record the location, extent and operating condition, then compare the finding with the equipment maker's limits and the site's maintenance procedure before deciding whether repair or replacement is appropriate.

Dimension drift that prevents a controlled fit during shutdown. Record the location, extent and operating condition, then compare the finding with the equipment maker's limits and the site's maintenance procedure before deciding whether repair or replacement is appropriate.

From drawing to site

Custom Supply, Packing and Worldwide Delivery

AGICO can prepare a drawing-based Ball Mill Trunnion for new supply or replacement service. The technical review covers the requested material, configuration, interfaces, inspection scope and documentation. If the original drawing is incomplete, provide measurements, nameplate information and clear photographs; the missing points will be listed for confirmation. No order-dependent dimension or performance value is treated as final until it appears in the approved technical documents.

Packing is planned for component weight, geometry, transport mode and destination. Finished surfaces can be protected against handling damage and corrosion, while loose accessories and documents are identified against the packing list. For international delivery, buyers should state the destination, preferred trade terms, lifting or site-access restrictions and required arrival schedule so that the quotation can separate manufacturing scope from freight and local handling.

Faster quotation

Send These RFQ Details

Complete technical inputs reduce clarification cycles and help us quote the correct supply scope.

Send Your Requirement
  • Ball Mill Trunnion drawing or complete dimensions
  • Equipment model and installation position
  • Material grade and inspection standard
  • Operating load, speed and wear history
  • Quantity and delivery destination
  • Required delivery date and documentation
From enquiry to delivery

Supply Workflow

  1. 01

    Review drawing and operating data

  2. 02

    Confirm material, process and inspection plan

  3. 03

    Manufacture and machine the component

  4. 04

    Complete agreed inspection and records

  5. 05

    Protect, pack and ship for installation

Complete spare-parts support

Related Cement Plant Parts

Buyer questions

Frequently Asked Questions

Can AGICO manufacture a custom ball mill trunnion from our drawing?

Yes. Send the drawing, equipment model and operating data for engineering review before quotation.

Which inspection documents can be supplied?

The agreed scope can include material certificates, dimensional reports and product-specific NDT, hardness or balance records.

What information is required for an accurate quotation?

Provide the ball mill trunnion drawing or dimensions, material, quantity, operating conditions, destination and required delivery date.

Can you supply worldwide?

Yes. Packing and shipment can be planned for the component size, finished-surface protection and destination requirements.

One-stop cement plant spares supplier

Ready to Confirm Your Ball Mill Trunnion?

Send your drawing, operating data and delivery destination for a technical review and quotation.

Request a Ball Mill Trunnion Quote
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