Figure 2. A simple sine wave with a period of 360° and an amplitude of 1. In single phase power the x-intercepts are 180° from each other. A full period is 360°. A single phase motor has a crest approximately every 16.5 milliseconds giving the motors a tendency to vibrate more, which may contribute to a shortened bearing life.
“NSF/ANSI 61.” NSF RSS. The Public Health and Safety Organization, n.d. Web. 07 June 2017.
Model 411 Horizontal Split Case
Custom fabrication to a large part
Vertical Lathe
Machinist at Nickerson Company running a state-of-the-art CNC machine.
Bowl wear ring
Horizontal Lathe
Figure 3. Three phase power has three identical sine waves overlapping at an offset of 2π/3 radians or 120°. When one phase reaches an x-intercept or node the next phase is only 30° and approximately 5.6 milliseconds from reaching its crest.
Gorman-Rupp SF Series® Submersible Solids-handling Pump
Schlumberger Pump Assembly
Custom shapes cut from raw materials.
Impeller wear ring
Horizontal Lathe
Close-Coupled Vertical Turbine
CNC machine, where computers are used to control the movement and operation of the mills, lathes, and other cutting tools.
Bowl wear ring
Model 342A Single Stage End Suction
Computer Numerical Control Machine (CNC) at Nickerson
