Standard No.:	QC/T 491-1999
English Name:	Dimension Series and Specification for Telescopic Shock Aborbers Used on Car
Chinese Name:	汽车筒式减振器 尺寸系列及技术条件
Professional Classification:	QC    Professional Standard - Automobile
Issued on:	1999-3-15
Implemented on:	1999-3-15
Status:	superseded
Superseded by:	QC/T 491-2018 Automobile Shock Absorber Technique requirements and Test Methods
Superseded on:	2019-1-1
Superseding:	JB 1459-1985
Target Language:	English
File Format:	PDF
Word Count:	2000 words
Translation Price(USD):	449.0
Delivery:	via email in 1 business day

This standard is applicable to telescopic shock absorber for automotive suspension. ...... ..... 1.2 For the code when test is carried out for telescopic shock absorber, resistance refers to damping force with 0.52m/s piston speed, which is the performance parameters for end-of-manufacturing inspection of shock absorber; if necessary, the test may be carried out according to the requirements of speed which is different from that of this standard through negotiation between the manufacturer and the user. 1.2.1 Range of rated recovery resistance and rated compression resistance is shown in Table 2.

1 Basic Parameters and Dimension 2 Technical Specification 3 Acceptance Rules 4 Marking, Packaging and Safekeeping Appendix A Connection Dimension of Simplified Shock Absorber (Informative) Appendix B Symbols and Terms (Informative) Additional Explanation