Deep-Groove Ball Bearings

Product catalog summary

Introduction
NTN-SNR has introduced a new internal CM clearance for their deep-groove ball bearings to enhance quiet operation, which is a priority for customers.

Specifications
The bearings affected include the 6000, 6200, and 6300 series, all of which now feature the CM clearance. This change applies to open bearings, bearings with metal shields (ZZ), contact seals (LLU), and non-contact seals (LLB).

Clearance Details
The CM clearance offers reduced tolerance of internal clearance, resulting in quieter operation by halving the noise level compared to the previous CN clearance. The CM clearance is interchangeable with the CN clearance and meets ISO standards.

Implementation
The transition to CM clearance does not affect mounting parameters, does not require additional approvals, and maintains unchanged load capacities.

Technical Data
The document provides specific micron ranges for both CN and CM clearances across various bore codes, ensuring precise application.

Quality Assurance
NTN guarantees sound comfort through 100% quality control, ensuring the reliability of the new CM clearance bearings.

Legal Notice
This document is proprietary to NTN-SNR ROULEMENTS, and reproduction without consent is prohibited. The company reserves the right to make changes to products and specifications without notice.

Catalog excerpts

DEEP-GROOVE BALL BEARINGS

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By listening to those working on the field, we know that quiet running is of the highest importance to our customers. That’s why NTN has established the new internal CM clearance for all these bearing types: 249 PART NUMBERS, MADE BY NTN, FEATURE THE CM CLEARANCE BORE CODES

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Thanks to narrower CM clearance which reduces vibration, NTN divides the noise level of bearings by 2. This sound comfort is guaranteed by 100% quality control. 100% QUALITY CONTROL © + REDUCED TOLERANCE OF INTERNAL CLEARANCE Replacing the CN clearance with the CM clearance has no impact on mounting. Both clearances meet the ISO standard and are interchangeable: (1) Identical mounting parameters 2 No additional approvals 3 Unchanged load capacities

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DOC_I_DGBBCM_ARG2_GBa - SAP : 473746 - Conception et réalisation : Service publicité NTN-SNR © 10/2019 - Photos: © Pedro Studio Photos - Shutterstock This document is the exclusive property of NTN-SNR ROULEMENTS. Any total or partial reproduction hereof without the prior consent of NTN-SNR ROULEMENTS is strictly prohibited. Legal action may be brought against anyone breaching the terms of this paragraph. NTN-SNR ROULEMENTS shall not be held liable for any errors or omissions that may have crept into this document despite the care taken in drafting it. Due to our policy of continuous research...

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