Rotor
The PSS stainless steel rotor is slid down the shaft and is secured to the shaft with set screws at 90° for maximum holding power. Precision tolerances are maintained by computer controlled lathes. The faces have a number 9 micro finish and are perpendicular to the bore to prevent run-out as the collar rotates. The carbon graphite stator will polish the face of the rotor during the first few minutes of operation. The stainless steel rotor should not need to be replaced under normal operating conditions.
The PSS stainless steel rotors are available in two different materials depending on application, 316L stainless steel or Nitronic 50.
316L Rotor
Chemical Composition (wt%)
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | N |
|---|---|---|---|---|---|---|---|---|---|
| 0.028 | 0.40 | 1.50 | 0.036 | 0.023 | 10.2 | 17.2 | 2.07 | 0.34 | 0.06 |
Mechanical Properties Spec.
| Hardness: | 134HBW |
| Tensile Strength: | 84.5 ksi |
| Yield Strength (0.2%): | 38.5 ksi |
| Elongation: | 65% |
| Reduction of Area: | 80% |
| Grain Size #: | 6.0 |
Nitronic 50 Rotor
Chemical Composition (wt%)
| C | Mn | P | S | Si | Ni | Cr | V | Mo | Co | N | Cb |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.038 | 4.85 | 0.029 | 0.004 | 0.36 | 11.89 | 21.79 | 0.15 | 2.28 | 0.14 | 0.320 | 0.154 |
Mechanical Properties Spec.
| Hardness: | BHN 215 |
| Tensile Strength: | 116,820 psi |
| Yield Strength (0.2%): | 69,070 psi |
| Elongation: | 43.9% |
| Reduction of Area: | 68.6% |
| Grain Size #: | 5.0 |
Meets requirements of ASTM A262 Practive E.
