Cross pumps and motors are stamped with identifying six digit stock numbers on the lip of the flange as shown in the diagrams.
If stamped numbers on the flange are difficult to read, displacement may be determined by measuring the body or gear width as noted.
| Model Number | Gear Width | Body Width |
|---|---|---|
| Model Number | Gear Width | Body Width |
| 40P005 | .372 | .779 |
| 40P007 | .558 | .965 |
| 40P010 | .744 | 1.151 |
| 40P012 | .930 | 1.337 |
| 40P015 | 1.116 | 1.523 |
| 60P081 | 2.045 | 2.548 |
| 40P015 | 1.339 | 1.746 |
| 50P015 | .675 | 1.082 |
| 50P019 | .867 | 1.274 |
| 50P023 | 1.031 | 1.438 |
| 50P027 | 1.218 | 1.625 |
| 50P033 | 1.467 | 1.874 |
| 50P038 | 1.689 | 2.096 |
| 50P052 | 2.311 | 2.718 |
| 60P040 | 1.015 | 1.518 |
| 60P051 | 1.280 | 1.783 |
| 60P061 | 1.545 | 2.048 |
| 60P071 | 1.795 | 2.298 |