GB/T 34888-2017Rotary shaft lip-type seals—Determination of installing and removing forces (English PDF)
旋转轴唇形密封圈 装拆力的测定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 1, 2017
Implementation date
May 1, 2018
Scope
GB/T 34888-2017 is the English-translated version of 旋转轴唇形密封圈 装拆力的测定.
GB/T 34888-2017 is the Chinese standard "Rotary shaft lip-type seals—Determination of installing and removing forces". Its scope clause reads: This standard specifies the rotary shaft lip seals pressed into or out of the chamber when the force measurement method.
This standard applies to the rotating shaft lip seals (hereinafter referred to as the ring) removable force (that is, into the force and prolapse) determination. Its clauses include terms and definitions; test device.
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Document preview — GB/T 34888-2017
National Standard of the People's Republic of China
- ICS
- 23.100.60
- Classification
- J 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 test device
1 Scope
This standard specifies the rotary shaft lip seals pressed into or out of the chamber when the force measurement method.
This standard applies to the rotating shaft lip seals (hereinafter referred to as the ring) removable force (that is, into the force and prolapse) determination.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version applies to this article
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 2941 Rubbery physical test specimen preparation and conditioning procedures
GB/T 13871.2 Rotary shaft lip seals with elastomeric body sealing element Part 2. Glossary
GB/T 16491 electronic universal testing machine
GB/T 21283.2 Rotary shaft lip seals with thermoplastic sealing element Part 2. Glossary
3 Terms and definitions
GB/T 13871.2 and GB/T 21283.2 defined terms and definitions apply to this document.
4 test device
4.1
test device by the test machine and test tooling.
4.2
Test machine should meet the provisions of GB/T 16491, should also meet the following requirements.
a) The maximum output force of the testing machine shall meet the requirements of the sealing ring for pressing in and out of the cavity. Force accuracy is ± 0.5% FSR.
b) Testing machine stroke should meet the requirements of sample and tooling installation and disassembly.
c) Displacement speed Promise speed regulation within the range of the displacement speed specified in the test, with a displacement accuracy of ± 0.5% FSR.
Note .FSR is an abbreviation for Ful-ScaleRange, ie full scale range.
4.3
Test tooling should be pad, block positioning block, the test chamber, the pressure block, the typical tooling shown in Figure 1 and Figure 2, the test cavity material, the table
Surface roughness, bore diameter should be consistent with technical drawings.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
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