Valid

GB/T 309-2021Rolling bearings - Needle roller (English PDF)

Preview PDF

This is a limited preview

Buy now to download the full PDF (24 pages)

Need quotation for your management?

Get a formal quotation for GB/T 309-2021 in 30 minutes.

Issued by

State Administration for Market Regulation, China National Standardization Administration

Level / Type

National · Recommended

Issue date

December 31, 2021

Implementation date

July 1, 2022

Scope

GB/T 309-2021 (Rolling bearings - Needle roller) is available as an English-translated PDF.

GB/T 309-2021 is the Chinese standard "Rolling bearings - Needle roller".

Its scope clause reads: This document specifies the dimensions and geometric characteristics, dimensions, technical requirements, testing methods, inspection rules, marking and packaging of steel needle rollers: This document is applicable to the production, inspection and acceptance of needle rollers and commodity needle rollers for supporting rolling bearings:. Its clauses include terms and definitions.

Found what you need?

Document preview — GB/T 309-2021

National Standard of the People's Republic of China

Classification: J 11

Issued by: State Administration for Market Regulation, China National Standardization Administration

Preface
Introduction
1 Scope
2 Normative references
3 Terms and Definitions
4 Symbol
5 size
6 Technical Requirements
7 Detection method
8 Inspection rules
9 flags
10 Anti-rust packaging
Appendix B (normative) Roundness error measurement method

1 Scope

This document specifies the dimensions and geometric characteristics, dimensions, technical requirements, testing methods, inspection rules, marking and packaging of steel needle rollers:

This document is applicable to the production, inspection and acceptance of needle rollers and commodity needle rollers for supporting rolling bearings:

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document:

GB/T 1182-2018 Product Geometric Specifications (GPS) Geometric Tolerance Shape, Orientation, Position and Runout Tolerance Marking

GB/T 1800:2-2020 Product Geometric Specifications (GPS) Linear Dimensional Tolerance ISO Code System Part 2: Standard

Tolerance zone code and limit deviation table of hole and shaft

GB/T 4249-2018 Product Geometric Specifications (GPS) Basic Concepts, Principles and Rules

GB/T 4380-2004 Two-point and three-point methods for evaluating roundness error

GB/T 6930 Rolling Bearing Vocabulary

GB/T 7811-2015 Rolling bearing parameter symbols

GB/T 8597-2013 Anti-rust packaging for rolling bearings

GB/T 17851-2010 Product Geometric Specification (GPS) Geometric Tolerance Datum and Datum System

GB/T 18254-2016 High carbon chromium bearing steel

GB/T 18579-2019 High carbon chromium bearing wire

GB/T 24608-2009 Inspection Rules for Rolling Bearings and Their Commodity Parts

GB/T 32324-2015 Rolling bearing roundness and waviness error measurement and evaluation method

GB/T 34891-2017 Technical conditions for heat treatment of rolling bearing high carbon chromium bearing steel parts

GB/T 38762:1-2020 Product Geometric Specifications (GPS) Dimensional Tolerances Part 1: Linear Dimensions

JB/T 6641-2017 Rolling bearing residual magnetism and its evaluation method

JB/T 7051-2006 Method for measuring and evaluating surface roughness of rolling bearing parts

3 Terms and Definitions

GB/T 1182-2018, GB/T 6930 and GB/T 38762:1-2020 as well as the following terms and definitions apply to this document:

3:1

Needle Roller Diameter Gauge

The diameter deviation range defined by the upper and lower deviations of deltaDwmp:

Note 1: The specification value is expressed by the upper and lower deviation, in µm: Example: -2/-4:

Note 2: See Table 1 for deltaDwmp:

GB/T 304.9 | GB/T 307.3 | GB/T 304.2 | GB/T 300 | GB/T 299 | GBZ/T 309 | […]

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 1800 · GB/T 38762

Cited by

How to Download GB/T 309-2021

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.