Why this guide matters
Custom OEM Drawing and RFQ Checklist provides a structured way to turn an incomplete replacement request into a verifiable component specification. The uploaded catalogues contain many configurations, but correct selection depends on matching the surrounding system and operating duty.
Five-step workflow
- Identify the exact product interface and record all mating dimensions.
- Describe the operating duty, including normal load, peaks, starts and environment.
- Compare the catalogue family with the existing machine or drawing; do not select by appearance alone.
- Define material, heat treatment, finish, inspection and documentation requirements.
- Review installation access, alignment, guarding and maintenance before approving production.
Measurements and documents
| Area | Record |
|---|---|
| Geometry | Shaft/bore, key or spline, pitch or groove, tooth/groove count, flange pattern, lengths and clearances. |
| Duty | Power, torque, load, speed, starts, reversing, shock, temperature, corrosion and contamination. |
| Quality | Material, hardness, heat treatment, surface finish, runout, balance, certificates and inspection report. |
| Commercial | Quantity, annual demand, destination, packaging, delivery target and sample needs. |
Common mistakes
- Using only an outside diameter or photograph.
- Mixing ANSI, DIN/ISO, JIS or vehicle references without confirming the interface.
- Replacing a worn component without checking the mating chain, sprocket, belt, hub or shaft.
- Adding a compliance or compatibility claim that is not tied to the exact drawing and order.
Engineering boundary
This guide helps prepare an RFQ. It is not a machine-safety assessment, vehicle approval or substitute for the responsible engineer's final design review.