Rundlaufprüfgerät, Rundlaufmessgerät von Spreitzer

CONCENTRICITY GAGES | RUNOUT MEASURING DEVICE

Runout inspection, runout testing right next to the machine. We offer centerless runout testers, bench centres with support prisms, concentricity gages with roll-off blocks and concentricity gauges with tailstocks. The runout test can be performed within 10 seconds without any prior knowledge.

CONCENTRICITY GAUGES | CONCENTRICITY GAGES

Reduces setup and downtime of your expensive processing machine by up to 80%!

Spreitzer’s concentricity gages offer high flexibility, fast set-up times, high runout accuracy and are suitable for different geometries.

The concentricity gages are used for inspection tasks on external, internal and flat surfaces of rotating parts. The concentricity of a round profile is of considerable importance for the manufacture of shafts, bushings, gear wheels or bearings. Examples from the automotive industry: camshafts, crankshafts, cardan shafts, drive shafts.

With our concentricity gauges, the coaxiality of two or more diameters can be determined and axial runout measurements can be performed. In the RPG, RPG AL RPG mini and RPG micro type, the workpiece is unwound between three rollers without a center. A concentricity of 0.002 mm is achieved. The robust construction with preloaded roller bearings of the support rollers is designed for durability. A diameter range of 0.8 to 240 mm can be covered with the specific product versions.

Form and position tolerances | Inspection options

In the measurement technology, concentricity gages occupy a particularly important position. A suitable measuring setup as well as corresponding precision of the concentricity gage are the basis for a precise measurement.

What is runout testing?

Runout testing, also known as radial runout testing or concentricity testing, is a procedure used to measure and evaluate the eccentricity or radial displacement of a rotating object, typically a shaft or a rotating component. It is commonly performed in manufacturing and engineering industries to ensure the quality and performance of rotating parts such as gears, bearings, pulleys, and shafts.

The purpose of runout testing is to assess the degree of variation in the radial position of a rotating object relative to a reference axis. This variation can cause undesirable effects such as vibrations, noise, reduced performance, and accelerated wear of the rotating components. By measuring and analyzing the runout, manufacturers can determine if the object meets the required tolerances and specifications.

Explanation of terms position tolerances

Circularity: The circumferential line must be perpendicular to the center axis between two concentric circles in all section planes.

Perpendicularity: for surfaces: the surface must lie between two planes perpendicular to the reference.

for axes: the cylinder axis must be in a cylinder perpendicular to the reference surface.

Radial runout: The uniformity of a rotating circular workpiece. During one revolution around the reference axis, the runout must not exceed a specified value.

Total, radial and axial runout: In the case of multiple rotation about the reference axis and simultaneous axial or radial displacement, the radial runout or axial runout must not exceed a specified value.

Concentricity and coaxiality: The center of the toleranced circle must be in a circle whose center is concentric to the reference.

The axis of the toleranced surface must be in a cylinder whose central axis is coaxial with the reference.

Coaxiality and concentricity deviation. Deviations that refer to a reference axis. The workpiece rotates around this axis when the toleranced element is measured. Runout deviations occur due to axis misalignment, lack of coaxiality or due to roundness deviations

Concentricity gauges, centerless

Centerless concentricity gauges for measuring tasks on external faces, internal faces and on flat faces. Suitable for one-sided individual and serial testing. Both-sided testings with optional accessories possible.