Cylindrical Master Ring Guarantee Program

Mahr Federal Inc. has introduced a program designed for customers who must ensure that their master rings are actually within the class (tolerance grade) they are manufactured to at the time of their purchase. Under the Class Assurance Guarantee Program, the company guarantees that its master rings will be within the class ordered or the ring will be replaced and full credit will be issued for its purchase price.

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Mahr Federal Inc. has introduced a program designed for customers who must ensure that their master rings are actually within the class (tolerance grade) they are manufactured to at the time of their purchase. Under the Class Assurance Guarantee Program, the company guarantees that its master rings will be within the class ordered or the ring will be replaced and full credit will be issued for its purchase price.

Master rings are manufactured to classes based on tolerances to submicrons/millionths of an inch. Master rings with the slightest errors at this level can influence the performance of manufactured parts.

The program also helps to ensure that master rings continue to meet class specification in subsequent calibrations. Since the class is guaranteed at time of receipt, there is a reduced chance of measurement error at the next annual certification when it is too late to dispute the original class, according to the company.

These master rings are ground and then lapped to size. Ring faces are ground and all non-gaging areas are black oxidized. They are manufactured in accordance with ANSI specification B89.1.6-2002 and available in hardened steel, chrome-plated or tungsten carbide.

 

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