JB/T 6639-2004
Rolling bearing parts-Skeleton acrylonitrile-buta-diene copolymers seal-Specifications (English Version)

Standard No.

JB/T 6639-2004

Language

Chinese, Available in English version

Release Date

2004

Published By

Professional Standard - Machinery

Status

Be replaced 2016-03

Replace By

JB/T 6639-2015

Latest

JB/T 6639-2015

Replace

JB/T 6639-1993

Scope

This standard specifies the technical requirements, inspection and assessment methods, inspection rules, marking, packaging and transportation of rubber materials, skeletons and finished products for skeleton rubber seals used in deep groove ball bearings. This standard applies to vulcanized nitrile rubber (NBR) sealing rings for sealed deep groove ball bearings specified in JB/T 7752-1995.

JB/T 6639-2004 history

• 2015 JB/T 6639-2015 Rolling bearings.Rubber seals reinforced with a sheet steel insert.Specifications
• 2004 JB/T 6639-2004 Rolling bearing parts-Skeleton acrylonitrile-buta-diene copolymers seal-Specifications
• 0000 JB/T 6639-1993