International Standard
ISO 19843:2018
Rolling bearings — Ceramic bearing balls — Determination of strength by notched ball test
Reference number
ISO 19843:2018
Edition 1
2018-10
International Standard
Read sample
ISO 19843:2018
66358
Published (Edition 1, 2018)
This standard was last reviewed and confirmed in 2024. Therefore this version remains current.

ISO 19843:2018

ISO 19843:2018
66358
Language
Format
CHF 151
Convert Swiss francs (CHF) to your currency

Abstract

This document specifies a method for the determination of the strength of finished ceramic balls for ball bearings, preferably made of silicon nitride (Si3N4), with ball diameters from 3 mm to 50 mm.

NOTE 1 ISO 26602 specifies the requirements for preprocessed silicon nitride materials for rolling bearing balls. ISO 3290-2 specifies requirements for finished silicon nitride balls for rolling bearings.

NOTE 2 Other test methods to determine ceramic ball strength can be found in Reference [7].

The results of the strength tests slightly depend on the Poisson's ratio. For this reason, all calculations are restricted to a Poisson's ratio ranging from 0,15 to 0,35. This includes the Poisson's ratio of a typical silicon nitride ceramic used as rolling element in ball bearings.

The method can also be used for rolling bearing balls made of other ceramic materials, but the reported prefactors may not be valid.

NOTE 3 Poisson's ratio of isotropic materials can be determined by one of the methods given in ISO 17561.

Because of the (defect controlled) brittle fracture behaviour of ceramic materials, a significant scatter of individual results in the characterization of a series of nominally identical samples can occur.

NOTE 4 A further statistical analysis according to ISO 20501 can be carried out.

General information

  •  : Published
     : 2018-10
    : International Standard confirmed [90.93]
  •  : 1
     : 32
  • ISO/TC 4/SC 12
    21.100.20 
  • RSS updates

Got a question?

Check out our FAQs

Customer care
+41 22 749 08 88

Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)