TOLERANCES OF THE PRECISION CLASSES P4+ AND UP+

Product catalog summary

Technical Information Overview
This document provides detailed technical specifications for GMN's high precision ball bearings, focusing on the new precision classes P4+ and UP+. It outlines the tolerances for dimensions, shape, and running accuracy, which are aligned with national and international standards such as ISO and ABMA.

Tolerances and Specifications

Bore Diameter Tolerances: The document specifies the deviation of mean bore diameter and the difference between the largest and smallest bore diameters for various bearing series and precision classes. For instance, the P4+ class allows a deviation of 0 to -4.0 µm for bore diameters up to 10 mm.
Outside Diameter Tolerances: Similar specifications are provided for the outside diameter, with the P4+ class allowing a deviation of 0 to -4.0 µm for diameters up to 18 mm.
Runout and Width Variation: The document details the maximum allowable radial and axial runout for both inner and outer rings, as well as the variation in ring width.

Precision Classes
The precision classes P4+ and UP+ are based on the existing P4 and P2 classes, corresponding to ISO and ABMA classifications. These classes ensure high precision in manufacturing, crucial for applications requiring tight tolerances.

International Standards Comparison
The document compares the GMN precision classes with international standards, indicating equivalence with ISO 492, DIN 620, and ABMA standards, specifically class 4 (P4, ABEC 7) and class 2 (P2, ABEC 9).

Catalog excerpts

TOLERANCES OF THE PRECISION CLASSES P4+ AND UP+-1

Technical Information High Precision Ball Bearings New GMN Precision Classes P4+ and UP+TOLERANCES The tolerances for dimension, shape and running accuracy of high precision ball bearings are specified in national and international standards. GMN high precision ball bearings in P4+ and UP+ are manufactured on the basis of precision classes P4 and P2. These tolerance classes correspond to the ISO and ABMA classifications (tolerance symbols per DIN ISO 1132-1). Inner ring dimensions in pm We reserve the right to make technical modifications, typographical errors and mistakes. GMN Paul Muller Industrie GmbH & Co. KG AuGere Bayreuther Strafe 230 • D-90411 Nurnberg [email protected] www.gmn.de

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TOLERANCES OF THE PRECISION CLASSES P4+ AND UP+-2

Technical Information High Precision Ball Bearings New GMN Precision Classes P4+ and UP+TOLERANCES Comparison of international tolerance standards (tolerance symbols per DIN ISO 1132-1) We reserve the right to make technical modifications, typographical errors and mistakes. GMN Paul Muller Industrie GmbH & Co. KG AuGere Bayreuther Strafe 230 • D-90411 Nurnberg [email protected] www.gmn.de

Open the catalog to page 2

TOLERANCES OF THE PRECISION CLASSES P4+ AND UP+

TOLERANCES OF THE PRECISION CLASSES P4+ AND UP+

Catalog excerpts

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