It is not possible to determine if a part is properly balanced by visual inspection. However, the method of correction should be as specified. Holes should be spaced and burred, weights properly fastened, and grinding done with workmanship that meets or exceeds industry standards. Cox & Sprague checks all these items to insure our customers receive the highest quality work.

Balancing machines can be checked by trial weights. A trial weight will check the indication of angle and the amount. Our practice at Cox & Sprague is to check the first part and the last part of each run.

Specifications must be in the form of drawings and/or written instructions. In balancing, these are; location of correction, method of correction, and the amount of unbalance that may be left in the part.

Balancing machines are calibrated to indicate the amount of material to be added or removed, and also to indicate angle or placement of correction. Because of this, the result of the second trial makes the machine self checking.

Cox & Sprague has the in-house capability for building any custom tools and fixtures required to accomplish the job. We also have an extensive collection of ready-to-use fixture, which can often save the additional time and cost required for new tooling.

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