Spring-loaded, GPRTOPS Live Centers

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Riten Industries, Inc. represents this unique line of heavy duty spring loaded live centers. Manufactured by Greber AG of Switzerland, and supported by Riten Industries, Inc. in the United States, these centers feature cylindrical roller bearings backed with the spring capabilities of Belleville washers. The spring loaded spindle compensates for work piece expansion or contraction while the large bore bearings are capable of supporting heavier loads. A three color pressure ring provides visible feedback to the operator to help monitor thrust loads.

Availability

These live centers are available from stock in Morse Tapers. Point configurations include standard and tracer points. Interchangeable point versions are available upon request. Custom variations of these live centers can be manufactured by discussing your application with one of our product specialists.

Technical Specifications

GPRTOPS live centers feature a combination of cylindrical roller bearings, needle rollers, a ball thrust bearing and a Belleville spring. The shell is manufactured from low carbon steel and case hardened, while the spindle is manufactured from alloy steel and through hardened to provide the maximum strength and durability needed in a live center spindle.

The “R” series live centers have standard points and a colored ring pressure indicator to visually indicate changes in thrust pressure. The “RV” series live centers have tracer points and a colored ring pressure indicator to visually indicate changes in thrust pressure.

The “D” series live centers have standard points and the same spring feature as the “R” series, but without the colored ring. The “DV” series live centers have tracer points and the same spring feature as the “RV” series, but without the colored ring.

Repair

GPRTOPS live centers can be rebuilt to “Like New” condition by Riten Industries without having to send the tool to Switzerland. This is a total reconditioning of the entire live center. The shell is inspected for damage and the taper shank is reground as needed. The bearings and seals are replaced with new components, while the spindle is replaced as needed. The live center is returned to its original accuracy. Every repair receives the identical factory warranty as that of a new live center.