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Single-Cylinder Engine Specification Example for Export Programmes: Folding Type

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

Single-Cylinder Engine Specification Example for Export Programmes: Folding Type

This is a worked specification for single-cylinder engine in a folding type 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 folding type version exists because the duty cycle on export programmes is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually a fitment that looked right on paper and failed on the bench.

Single-Cylinder Engine

Example specification

ItemSingle-Cylinder Engine
ApplicationExport Programmes
VersionFolding Type
Base materialCeramic Composite
Controlled dimensions6 key dimensions, recorded per lot
Tolerance band±0.2 mm
Finishzinc plated
MOQ2,000 pieces per specification
Sampling10 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 — Ceramic Composite, 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.

Single-Cylinder Engine example

Processes involved

  • injection moulding
  • assembly line testing
  • rubber vulcanisation
  • CNC machining
  • sintering
  • gravity casting

Where this example applies

Programmes that run folding type most often specify this build for export programmes. Related applications include construction equipment, agricultural trailers, utility trailers, dealership service, three-wheelers.

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

Do you handle mixed containers?

Yes. Most programmes consolidate several part numbers into one container to keep freight sensible at 2000 pieces per line.

What happens if a lot fails inspection?

The lot is re-inspected against the golden sample, and replacement pieces ship on the next available booking at our cost.

What is the minimum order quantity?

The standard MOQ is 2000 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

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.

Tell us the model, the fitment and the quantity and we will hold a production slot for you.

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