Fixture - 893 Jacks

In many instances a part requires support (or jacking up) after it is damped to prevent its being distorted or vibrated during the machine process which would cause inaccuracies in the machine part. Often a jack is designed to function as a spring-loaded button while the part is being loaded and as a jack after the part is clamped. Some jacks have force other than, or in addition to a spring applied to them before they are locked. Usually a retracting desvice for the jack is included in the design.