Vertical Turning & Horizontal Machining of a Flywheel for a
Heavy Equipment Application

Flywheel

Lincoln Park Boring offers custom flywheel manufacturing & machining services. We machined a large flywheel used in heavy equipment application for a client based in Michigan. Fabricated to customer-supplied prints and 2D AutoCAD drawings, the part weighed 40,000 lbs. Using our Bullard 124 vertical turning lathe and G&L 7" horizontal boring mill, the flywheel was machined from a normalized ductile iron casting. We achieved tight tolerances of up to +0.001 / -0.000 on the internal diameter of the flywheel and a concentricity of 0.001". On machining the component, the part surface was finished to 63 RMS. The part also underwent both ultrasonic and Mag-particle in-process testing.

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