GB/T 7948-2024 Active National standards

GB/T 7948-2024 Plain bearings—Test method for PV limit of plastic bushes

Publish Date: 2024-09-29 Implement Date: 2025-01-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 7948-2024

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Sliding bearing

ICS Name: Sliding bearings

Publish Date: 2024-09-29

Implement Date: 2025-01-01

Pages: 16 pages

Scope

This document describes the test method for determining the extreme PV value of rotating plastic bushings under dry friction, lubricating oil, or grease boundary lubrication conditions.
This document is applicable to the determination of the extreme PV value of plastic bushings and plastic bushings with plastic coatings.
This document is not applicable to the determination of the extreme PV value of plastic bushings in swing or linear reciprocating motion forms.

Development Information

Word Count: 17 Thousand words Pages: 16 pages

Replace the following standards

GB/T 7948-1987 Test method for PV limit of plastics bearings

Referenced Standards

GB/T 2889-1994 Plain bearings—Terms, definitions and classification GB/T 2889.1-2008 Plain bearings—Terms,definitions and classification—Part 1:Design,bearing materials and their properties GB/T 2889.1-2020 Plain bearings—Terms,definitions,classification and symbols—Part 1:Design,bearing materials and their properties GB/T 2889.2-2020 Plain bearings—Terms,definitions,classification and symbols—Part 2:Friction and wear GB/T 2889.3-2020 Plain bearings—Terms,definitions,classification and symbols—Part 3:Lubrication GB/T 2889.4-2011 Plain bearings—Terms,definitions,classification and symbols—Part 4:Basic symbols GB/T 2889.5-2021 Plain bearings—Terms,definitions,classification and symbols—Part 5:Application of symbols GB/T 2889.6-2020 Plain bearings—Terms,definitions,classification and symbols—Part 6:Abbreviated terms GB/T 3974-1983 Telephone transmission interference allowances for long-distance high-capacity analogue microwave communication systems GB/T 12613.1-2002 Plain bearings—Wrapped bushes—Part 1:Dimensions GB/T 12613.1-2011 Plain bearings—Wrapped bushes—Part 1:Dimensions GB/T 2889.7-2026 Plain Bearings—Terms,definitions,classification and symbols—Part 7:Hydrostatic and aerostatic bearings

Related Standards

GB/T 7308-1987 Replaced

GB/T 7308-1987 Plain bearings—Thin-walled flanged half bearings—Dimensions, tolerances and methods of checking

Publish Date: 1987-02-24

GB/T 3162-1991 Replaced

GB/T 3162-1991 Plain bearings—Thin-walled bearing shells—Dimensions, structure elements and tolerances

Publish Date: 1991-04-30

GB/T 12948-1991 Replaced

GB/T 12948-1991 Plain bearings—Metallic multilay er plain bearings—Destructive testing of bond for bearing metals

Publish Date: 1991-06-01

GB/T 12949-1991 Abolished

GB/T 12949-1991 Plain bearings—Bimetallic bushes with plastic overlay

Publish Date: 1991-06-04

GB/T 13345-1992 Replaced

GB/T 13345-1992 General technical requirement of oil film bearing for rolling mill

Publish Date: 1992-01-07

GB/T 14910-1994 Replaced

GB/T 14910-1994 Plain bearings—Requirements on backings for thick-walled multilayer bearings

Publish Date: 1994-02-21