An anonymised case showing how a piston motor replacement was reviewed against the original unit, machine duty and operating environment before supplier approval.
ANONYMIZED PROCESS RECORD
Axial piston motor with brake and speed sensor
- Challenge
- The plant needed a replacement for a discontinued piston motor driving a process conveyor. The original nameplate was worn, the motor had an integrated brake and speed sensor, and downtime was costly. A generic 'same displacement' offer had already failed once.
- Documented outcome
- Documented replacement with sample validation
Evidence Received
Partial nameplate with legible model code sections
Motor mounting flange and shaft-end photos with scale reference
Brake and sensor connector photographs
Machine duty cycle: 16 h/day, continuous torque, frequent starts
Failed motor returned for dimensional comparison
Published Supporting Evidence
Motor nameplate and dimensional comparison record
Internal review document; customer identity withheld
Review Record
| Review field | Finding | Action |
|---|---|---|
| Model identification | The worn nameplate retained the key displacement, series and brake code positions | Reconstructed the complete code, marking confirmed and inferred characters |
| Interface verification | The mounting flange, shaft and port threads had to match the gearbox and existing hoses | Compared supplier drawing dimensions against the returned failed unit |
| Brake and sensor | The brake release pressure and sensor output signal had to be confirmed | Requested the brake characteristic and sensor specification from the supplier |
| Sample validation | The buyer could not risk a batch failure with production running | Supplied one sample unit; the buyer installed, commissioned and monitored for one week before the batch order |
Outcome and Limits
- One sample unit validated the mounting, brake function and sensor compatibility
- Batch order of six motors followed the successful sample trial
- The dimensional comparison record was retained for future repeat orders
The result describes this anonymized inquiry only. It does not guarantee the same outcome for a different code, supplier, machine or application.
PROCESS TAKEAWAY
A used, failed unit is one of the best identification references available — keep it until the replacement is installed, commissioned and accepted.
Request the same evidence-led review format.: Send the complete model code, files, quantity, destination and application. Your reply will separate confirmed facts from open points.