Standard No.:	JB/T 8825.7-2011
English Name:	Tool for whitworth threads — Part 7：Thread rolling cylindrical dies
Chinese Name:	惠氏螺纹刀具 第7部分：滚丝轮
Chinese Classification:	J41    Cutting tools
Professional Classification:	JB    Professional Standard - Machinery
ICS Classification:	25.100.50 25.100.50    Taps and threading dies 25.100.50
Source Content Issued by:	State Economic and Trade Commission
Issued on:	2011-12-20
Implemented on:	2012-4-1
Status:	valid
Superseding:	JB/T 8825.7-1998 Thread rolling cylindrical dies for whitworth threads
Target Language:	English
File Format:	PDF
Word Count:	4000 words
Translation Price(USD):	120.0
Delivery:	via email in 1~3 business day

本标准规定了惠氏螺纹用滚丝轮的型式、尺寸及偏差、技术要求、标志和包装等的基本要求。
滚丝轮分为两种精度等级：2级和3级。2级适用于加工中等级外螺纹，3级适用于加工自由级外螺纹。
本标准适用于加工惠氏螺纹的滚丝轮。