Pump Shaft Quality (PSQ)
In the stainless and nickel industries, Pump Shaft Quality (PSQ) indicates turned, ground and polished shafting used in the rotating industries. The tight diametrical tolerance achieved through grinding decreases wear and gives a more constant product with controlled properties. Our inventory consists of diametrically oversized material in 20’ to 24’ random lengths, allowing NSA to meet very specific customer requests for nonstandard PSQ requirements on an expedited basis.
NSA’s stock meets or exceeds industry standards
| NSA’s Stocking PSQ Sizes | ||||||||
|---|---|---|---|---|---|---|---|---|
| 3/4” | 13/16” | 7/8” | 1” | 1-1/8” | 1-3/16” | 1-1/4” | 1-3/8” | 1-7/16” |
| 1-1/2” | 1-5/8” | 1-11/16” | 1-3/4” | 1-15/16” | 2” | 2-3/16” | 2-1/4” | 2-7/16” |
| 2-1/2” | 2-11/16” | 2-15/16” | 3” | 3-3/16” | 3-1/4” | 3-7/16” | 3-1/2” | 3-11/16” |
| 3-3/4” | 3-15/16” | 4” | 4-1/4” | 4-1/2” | 5” | 5-1/4” | 5-1/2” | 6” |
| NSA’s Stocking PSQ Grades |
|---|
| UNS N05500 / Nickel Alloy 500 |
| UNS N08020 / Alloy 20 |
| UNS S17400 / 17-4 H1150 |
| UNS S20910 / XM-19 High Strength |
| UNS S30300 / 303 BQ |
| UNS S30400 / 304 BQ |
| UNS S31600 / 316 |
| UNS S41000 / 410 |
| UNS S41600 / 416 Heat Treat |
Custom shafts 3/4” RD to 14” RD, with specified length,
finish & grade available upon request.
Custom Grades
Custom grades are available for most stainless and nickel alloy applications.
Custom Sizes
Custom sizes can be produced in standard or metric dimensions with specific tolerances including ovality and straightness per our customers requirements.
Custom Lengths
Although standard shafts are 20’ random lengths, NSA has oversized bar stock in shafting grades up to 24’ or loner that can be processed to meet our customers requirements.
Custom Finishes
The industry standard finish for PSQ is 32 RMS (Root Mean Square). We order PSQ at the industry standard and can supply up to an 8 RMS or better to offer our customers a superior product based on their specifications.
Packaging
NSA has special boxing for PSQ material to ensure the protection of the finish and straightness of material during transportation and handling.
NSA’s PSQ Advantage
Here at NSA we are selective with our “value added processors”. We interact daily with them and they know exactly what we expect in terms of finished product and delivery time.
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