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Car Bearing Specification Example for Emergency Vehicles: Folding Type

Source:Engine Piston Ring Set / Time:2026-09-18

Car Bearing Specification Example for Emergency Vehicles: Folding Type

This is a worked specification for car bearing 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 emergency vehicles is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually premature wear on the first batch.

Car Bearing

Example specification

ItemCar Bearing
ApplicationEmergency Vehicles
VersionFolding Type
Base materialBronze
Controlled dimensions3 key dimensions, recorded per lot
Tolerance band±0.2 mm
Finishanodised
MOQ200 pieces per specification
Sampling14 working days, 3 days per revision
ComplianceSGS

How the example is built up

  1. Start from the duty cycle, not from the catalogue photograph.
  2. Fix the base material in writing — Bronze, 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.

Car Bearing example

Processes involved

  • shot blasting
  • heat treatment
  • laser cutting
  • surface grinding
  • assembly line testing
  • gravity casting

Where this example applies

Programmes that run folding type most often specify this build for emergency vehicles. Related applications include city buses, camper conversions, racing teams, fleet maintenance, agricultural trailers.

Checks before packing

  • Dimensional report against the approved drawing.
  • AQL 2.5 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 SGS-compliant build instead of a fresh interpretation.

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. SGS documentation is issued with the shipment when your market requires it.

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.

Send the specification you are working to and we will confirm what we can match, what we would change and why.

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