Spare Parts Identification Guide
Ten points for getting a replacement part or consumable right the first time. Most wrong parts come from missing information, not from bad manufacturing.
A part that looks right can still fail to fit or wear out early. The points below give a manufacturer everything needed to match the part to your equipment and its duty. For a list of several items, give each line its own reference so nothing is matched by guesswork.
- 01
Equipment
Make, model, serial number and year of the machine the part belongs to.
ExampleDetails from the machine’s nameplate
Why it mattersManufacturers change parts between model years and serial ranges.
- 02
Part reference
Original part number, label text or existing drawing.
ExamplePart number with any superseded numbers
Why it mattersThe fastest route to a match, especially when cross-referenced.
- 03
Photos
Overall view, nameplate and markings, mounting points and any wear or damage.
ExampleFive photos with a ruler in frame
Why it mattersShows features that numbers alone miss.
- 04
Dimensions
Critical dimensions with units and tolerances, measured on an unworn part where possible.
ExampleBore 60 mm H7; overall length 412 mm
Why it mattersWorn parts give misleading measurements.
- 05
Material
Known material, hardness, coating or seal compound.
ExampleHardened steel, 52–56 HRC; FKM seals
Why it mattersDetermines wear life and compatibility with the operating media.
- 06
Operating conditions
Temperature, pressure, media, speed and load in service.
ExampleHydraulic oil at 70 °C and 280 bar
Why it mattersA part matched on dimensions alone may fail under real conditions.
- 07
Quantity and usage
Quantity now, annual consumption and stocking approach.
Example40 pieces now; about 160 per year
Why it mattersAllows batch planning and consistent supply.
- 08
Quality tier
Whether you need original parts, parts from the original supplier, or compatible parts made to drawing.
ExampleCompatible acceptable for filters; original for pump internals
Why it mattersEach tier has a place, and the choice should be explicit.
- 09
Inspection
Sample approval, material certificates or dimensional reports required.
ExampleFirst-article inspection report before the batch ships
Why it mattersConfirms the match before volume is produced.
- 10
Delivery
Destination, target date and labelling by line reference.
ExampleDelivered to Monterrey by week 32, labelled per line
Why it mattersPrevents mix-ups on arrival and at the stores.
Common Mistakes
- Measuring a worn part and treating the result as nominal.
- Using a part number from a superseded catalogue.
- Combining parts for several machines in one list without machine references.
- Sending photos without scale or nameplate.
- Leaving the quality tier unstated.
Checklist
Tick off each point as you prepare the enquiry. Your progress is saved in this browser.
Ready to Send?
Attach drawings, photos or specifications to the enquiry form.
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