
Frequently Asked Questions
Review the questions below alongside the page information. Keep the original part reference, agreed specification and any project-specific requirements with your inquiry.
Which inspection checks are relevant to my carbon brush?
Start with the agreed drawing, material reference and application. Identify the dimensional, electrical and mechanical requirements that need verification, then confirm the applicable methods and acceptance criteria for the part.
Does every brush require the same test limits?
Use the limits specified for the relevant drawing, material and application. Do not transfer a generic resistance, hardness or load value to a different brush without an appropriate technical basis.
Can I request inspection records?
State the records required in the inquiry or purchase specification. Agree their scope, format and availability before ordering rather than assuming that every record or test is included.
How should a sample and later supply be compared?
Use the agreed specification, drawing revision and applicable acceptance checks as the reference. Record what was approved and confirm the verification method for later supply.
When should inspection and acceptance requirements be agreed?
Include them in the inquiry and confirm them with the drawing and supply scope before ordering. Identify the applicable method, acceptance criteria and records required. Resolve any difference between the sample approval and production checks before the order proceeds.
How should a buyer report a difference from an approved sample?
Identify the order, part reference and drawing revision, then describe the observed difference. Provide measurements or photographs and the inspection method used where available. Keep the approved reference and relevant supply records together for review instead of assuming the cause from appearance alone.