Step 1:

Hydraulic Press

Pressing Completed Rotor and Motor Shaft Together for Subsequent Operations.

Step 1:

Hydraulic Press

Use of Dedicated Press Tooling Minimizes Rotor Distortion and Motor Shaft Bending, Eliminating Straightening Prior to Turn and Grind Operations.

Step 2:

CNC Lathe

Turn End Rings and Rotor O.D. Leaving Stock for Subsequent Grinding Operations.

Step 2:

CNC Lathe

Quick Recall of CNC Programs, Dedicated Turning Tools and Standardized Workholding Enable Quick Turnaround Between Jobs.

Step 3:

CNC Grinding

Grinding Rotor O.D. of Turned Rotor and Shaft Assembly. One of Three CNC Grinders in the Cell.

Step 3:

CNC Grinder

Many Rotor and Shaft Assemblies are Ground on Multiple Diameters After Assembly for Near-Perfect Concentricity.

Step 4:

Dynamic Balancing

Finish Ground Assemblies are Dynamically Balanced to Tolerances of .001 In-Oz. in Two Planes.

Step 4:

Dynamic Balancing

Balancing is Accomplished Either by Removing Material from End Caps or by Drilling Holes in End Caps as Specified by the Customer.

Overall View of Cell with Two of Three CNC O.D. Grinders and a Precision Balancing Machine.

Working as a Team Grinding and Balancing Assemblies for Maximum Throughput and Efficiency.

Pre-Grinding of a Second Motor Shaft While Finish Grinding Assemblies Demonstrates Multitasking, Cross-Training and Efficiency.

Motor Shaft and Raw Cast Rotor Before Assembly, Note: Shaft is 4340 at Rc 45 with an AGMA 9 Quality Pinion Gear and a Spline on Opposite End.

Finished Rotor and Shaft Assembly with Subsequent Paint, Shaft is Nitralloy 135 Material Nitrided to Rc 60.

Typical Rotor and Shaft Assembly Showing Drilling of End Rings to Correct Out-of-Balance Condition (Customer Specified).

Rotor and Shaft Assembly with Special Spacer Installed and Turned Holding .002 Linear Dimension.

Small Rotor and Shaft Assembly for Boeing 787 Dreamliner Program Power Drive Unit.

Small Rotor and Shaft Assembly with Thin Dense Chrome Plating of Rotor. This Rotor Requires Finish Grinding of Three Diameters After Assembly. Shaft is 440c at Rc 55 with an AGMA 9 Pinion Gear, Hard Cut after Heat Treat.

New Rotor and Shaft Assembly for Parker Division (Gulfstream G650 Program). This Part was Made Complete in Less Than 8 Weeks.

Premier Gear is AS9100 Rev C Certified

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