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Racing Crankshaft Components Specification Example for Dealership Service: Low Maintenance Version

Source:Durable Electric Bicycle Tire / Time:2026-09-18

Racing Crankshaft Components Specification Example for Dealership Service: Low Maintenance Version

This is a worked specification for racing crankshaft components in a low maintenance version programme. It is the document we would send a buyer who asks what exactly they are getting: the material, the dimensions that are actually controlled, the finish, and the checks that happen before anything is packed.

The low maintenance version version exists because the duty cycle on dealership service is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually reorders that did not match the approved sample.

Racing Crankshaft Components

Example specification

ItemRacing Crankshaft Components
ApplicationDealership Service
VersionLow Maintenance Version
Base materialBrass
Controlled dimensions4 key dimensions, recorded per lot
Tolerance band±0.05 mm
Finishzinc plated
MOQ200 pieces per specification
Sampling7 working days, 5 days per revision
ComplianceSAE J431

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Brass, in this example.
  3. List the dimensions that are actually controlled and the tolerance on each.
  4. Name the finish and what it has to survive.
  5. State the inspection level and who pays when a lot fails.

Racing Crankshaft Components example

Processes involved

  • injection moulding
  • die casting
  • cold forging
  • gravity casting
  • robot welding
  • rubber vulcanisation

Where this example applies

Programmes that run low maintenance version most often specify this build for dealership service. Related applications include fleet maintenance, aftermarket retail, assembly programmes, export programmes, emergency vehicles.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 1.5 sampling on the finished lot.
  • Finish inspection under agreed lighting.
  • Carton drop test on the first lot of a new packing specification.

Questions buyers ask

Can the specification be held on file?

Yes. Once approved, the specification is recorded against your part number so a reorder reproduces the SAE J431-compliant build instead of a fresh interpretation.

What is the minimum order quantity?

The standard MOQ is 200 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

Can you match an existing sample?

Send a sample and we will reverse-engineer the specification, then produce a counter sample for approval before any bulk starts.

What testing is included?

Standard lots ship with dimensional and hardness reports. SAE J431 documentation is issued with the shipment when your market requires it.

Share a sample or a drawing and we will quote against a written specification, not against a photograph.

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