Standard No.:	JB/T 7757.1-1995
English Name:	Cylindrical helical springs intended to be used in mechanical sealing
Chinese Name:	机械密封用圆柱螺旋弹簧
Chinese Classification:	J22    Sealing and sealing device
Professional Classification:	JB    Professional Standard - Machinery
Issued by:	Hefei General Mechanical Research Institute
Issued on:	1995-06-16
Implemented on:	1996-7-1
Status:	abolished
Superseded by:	JB/T 11107-2011 Cylindrically helical compression spring for mechanical seal
Superseded on:	2011-8-1
Abolished on:	2011-08-01
Superseding:	ZBJ22004-1988
Language:	English
File Format:	PDF
Word Count:	7500 words
Price(USD):	450.00
Delivery:	via email in 1~3 business day

本标准是对ZB J22 004-88的修订。 本标准主要在弹簧特性、永久变形、尺寸和级限偏差及验收抽样方法等方面进行了修订。 本标准规定了机械密封及冷卷圆截面圆柱螺旋压缩弹簧的技术要求、试验方法及检验规则。 本标准适用于机械密封用冷卷截面圆柱螺旋弹簧，弹簧材料的截面直径d大于或等于0.5mm。