How do I check whether a part number on the box matches the component removed from my machine?

Start with the document trail, not the box label. A box label can be reused, reprinted, or show a warehouse SKU. Match the orderable part number from the applicable parts catalogue revision to the old component's identity and to the candidate part's label or engraving. Then confirm any old-to-new number change with a documented supersession record. If any of those records is missing or conflicts, hold the part and request the missing evidence.

1. What this check is trying to prove

In a maintenance purchase, the goal is not only that the box and the removed component look similar. You are checking whether the orderable part number belongs to the same fitment and revision path for your machine serial number.

Keep these issues separate:

• Part identity: the actual orderable part number.
• Fitment: whether that number is listed for the machine model, suffix and serial range.
• Provenance: where the candidate part came from and whether that supply chain is documented.
• Batch quality: whether the batch was produced and accepted under the applicable requirements.
• Acceptance: whether the responsible workshop or buyer can accept this specific piece.

Model alone never confirms fitment, batch quality or authenticity.

2. Separate the marks that can appear on a box and a part

Box SKU and orderable part number

A box SKU is often the seller's stock-keeping unit. It may be internal to a warehouse and may not equal the orderable part number in the equipment maker's catalogue.

Always identify the orderable part number separately. Do not accept a box SKU as the orderable part number unless the supplier shows that it is the catalogue number for your serial range.

Casting mark or engraved number

A raised casting mark, forging number or engraved raw-material number is not always the finished orderable part number. The same raw casting may become more than one finished part after machining.

Treat the casting mark as a cross-check only. It can support identification, but it does not replace the orderable part number.

Batch code

A batch code tracks production history. It can be useful for traceability or quality records, but it does not confirm fitment by itself.

Documented supersession

A part number on the old component may no longer be the current orderable number. The catalogue may show an old-to-new supersession. Ask for the documented supersession record, not a verbal assurance that the new number is equivalent.

3. Evidence to collect before comparing numbers

Do not guess from one label. Request the missing evidence.

Useful evidence includes:

• Machine model and suffix.
• Machine serial number.
• Nameplate data from the machine or assembly.
• Old part number from the removed component, housing or maintenance record.
• Component or housing photos showing the marking and overall shape.
• Installation position.
• Applicable parts catalogue revision.
• Documented supersession or interchange record.

A photo alone can show that a part exists, but it does not prove every fitment or quality claim. A supplier statement is also not automatic proof of catalogue coverage.

4. Compare the numbers step by step

Confirm the catalogue revision

Ask which catalogue revision the supplier used. The correct revision depends on the machine serial number and configuration. If the supplier cannot state the revision, do not rely on a label match alone.

Read the old orderable part number

Take the old part number from the removed component or a reliable maintenance record. Do not rely on memory.

Check the current orderable number

Using the applicable catalogue revision, find whether the old number is current or has been superseded by a new number.

Compare the candidate part

Check the candidate part label and any component marking against the current orderable number. If the box label, component marking and catalogue number do not align, stop and request clarification.

Use the casting mark only as a secondary check

If the casting mark differs but the orderable part number is correct, cross-check the catalogue or a technical record before accepting or rejecting. A raw-casting difference is not automatically a wrong part.

5. Missing evidence that should stop acceptance

Do not accept the part when any of these are missing or unclear:

• No catalogue revision for the specific serial number.
• No readable old part number or removal record.
• No orderable part number on the candidate label.
• A number difference explained only by an undocumented statement.
• No documented supersession when the old and new numbers differ.
• A photo that is too dark, blurred or cropped to read the marking.

In those cases, request the document or photo that fills the gap. Guessing a match can create a fitment or traceability problem.

6. Parts Matching Support

Parts Matching Support: if the evidence is incomplete, MechLink can receive the machine model, serial number, old part number and component/housing photos for candidate-number checking.

MechLink is an external commercial parts-information and procurement support provider, not a SANY official contact. MechLink WhatsApp for parts information and procurement enquiries: +77026412810. This number does not imply a local office or local stock.

7. Procurement next step

If the numbers match and the supersession is documented, ask the supplier to confirm in writing the catalogue revision used, the orderable part number, batch code and any old-to-new supersession.

Then have the responsible workshop or buyer make the final acceptance decision. Do not install the part only because the box looks correct.

8. Sources

No external catalogue, report or standard was inspected for this answer. The checks refer to the applicable parts catalogue revision, machine serial records and supplier technical documents, which the reader must obtain for the specific machine. Therefore no page number, URL or issue date is cited.