A replacement cylinder must match dimensions, mounting and ports, not just look the same. Measure in a consistent order and keep photographs with the RFQ.
Send a hydraulic component for review: Include the complete model code, quantity, destination and available photos or drawings.
Dimensions to record
- Bore diameter—measured inside the tube, not guessed from the rod
- Rod diameter and exposed rod length
- Stroke between fully retracted and fully extended positions
- Closed centre distance and pin or mounting centres
- Port size, thread, position and orientation
Mounting types change everything
| Mounting | Measure | Common error |
|---|---|---|
| Clevis | Pin bore, clevis width and pin centres | Mixing pin centres with overall length |
| Flange | Bolt pattern, pilot and face offset | Assuming all flanges are the same |
| Trunnion | Trunnion centres and pin diameter | Measuring only the body length |
| Foot | Foot bolt spacing and height | Missing the rod-end offset |
Nameplate and photos
- Full nameplate with series and model code
- Retracted and extended side views
- Mounting ends, ports and rod-end thread detail
- The machine installation and any adjoining bracket