Original Date: 03/16/1998
Revision Date: 01/18/2007
Best Practice : Form (Crush) Grinding
Strite uses form (crush) grinding as the most cost-effective manufacturing technique for large-volume production (greater than 45,000 units), such as thrust collars for turbochargers and landing gear components. This technique has enabled Strite to supply more than six million thrust collars to one customer over a 20-year period. The company also operates numerous form grinding machines to produce high speed (180,000 rpm) automotive turbochargers. Strite hardens, grinds, and hones these parts to precise dimensions and stringent tolerances. These tolerances ensure the part’s reliability in diesel engines of passenger cars throughout the world.
By using form grinding techniques and precision machines, Strite can achieve concentricities to 0.0005 inch; flatness to 50 millionths; squareness to 0.0003 inch; groove widths to 0.0008 inch; and bores to 0.0004 inch. These specifications are typically required for flight or automotive critical components. Form grinding is 88% faster than conventional grinding techniques, and has demonstrated a repeatability of 0.0002 inch on a run of 240 pieces.
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