Welcome to Auto, Motorcycle Parts & Accessories official website!

Sleeve Auto Bearing Specification Example for Assembly Programmes: Long Life Version

Source:Portable Car Lift / Time:2026-09-18

Sleeve Auto Bearing Specification Example for Assembly Programmes: Long Life Version

This is a worked specification for sleeve auto bearing in a long life 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 long life version version exists because the duty cycle on assembly programmes is not the same as on a showroom vehicle. Where the two are specified identically, something fails later — usually a supplier who changed material without saying so.

Sleeve Auto Bearing

Example specification

ItemSleeve Auto Bearing
ApplicationAssembly Programmes
VersionLong Life Version
Base materialAluminium Alloy
Controlled dimensions5 key dimensions, recorded per lot
Tolerance band±0.2 mm
Finishas machined
MOQ500 pieces per specification
Sampling7 working days, 5 days per revision
ComplianceE-mark

How the example is built up

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

Sleeve Auto Bearing example

Processes involved

  • precision stamping
  • injection moulding
  • ultrasonic cleaning
  • die casting
  • laser cutting
  • sintering

Where this example applies

Programmes that run long life version most often specify this build for assembly programmes. Related applications include scooter fleets, boat trailers, racing teams, agricultural trailers, assembly programmes.

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

What testing is included?

Standard lots ship with dimensional and hardness reports. E-mark documentation is issued with the shipment when your market requires it.

What is the minimum order quantity?

The standard MOQ is 500 pieces per specification. Mixed sizes inside one shipment are accepted once the total reaches that figure.

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.

How is packing specified?

Individual packing, inner box quantity and carton marking are confirmed at quotation stage so the cartons arrive ready for your warehouse.

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

Online customer service
WeChat contact
Customer service
Scan code to add Wechat (same mobile phone number)
Telephone consultation
Back to top