ASME B18.25.3M-1998 PDF

Scope: 1.1.1 This Standard covers requirements for squareand rectangular parallel keys and keyways intended forboth alignment of shafts and hubs, and transmittingtorque between shafts and hubs. 1.1.2 Keys covered by this Standard have a relativelyloose width tolerance. All width tolerances arepositive. Keys with minus width tolerances and a smallertolerance range are covered by ASME B 18.25.lM. 1.1.3 The inclusion of dimensional data in thisStandard is not intended to imply that all sizes describedare production stock items. Consumers should consultwith suppliers concerning lists of stock items. 1.1.1 本标准涵盖了用于轴和轮毂对中以及在轴和轮毂之间传递扭矩的方形和矩形平行键和键槽的要求。 1.1.2 本标准涵盖的密钥具有相对宽松的宽度公差。所有宽度公差均为正。具有负宽度公差和较小公差范围的键由 ASME B 18.25.lM 涵盖。 1.1.3 本标准中包含尺寸数据并不意味着所有尺寸都描述了生产库存项目。消费者应就库存物品清单向供应商咨询。

ASME B18.25.3M-1998 Referenced Document

ASME B18.25.1M SQUARE AND RECTANGULAR KEYS AND KEYWAYS
ISO 2491:1974 Thin parallel keys and their corresponding keyways (Dimensions in millimetres)
ISO 286-1:1988 ISO system of limits and fits; part 1: bases of tolerances, deviations and fits
ISO 286-2:1988 ISO system of limits and fits; part 2: tables of standard tolerance grades and limit deviations for holes and shafts

2008 ASME B18.25.3M-2008 SQUARE AND RECTANGULAR KEYS AND KEYWAYS: WIDTH TOLERANCES AND DEVIATIONS GREATER THAN BASIC SIlE
0000 ASME B18.25.3M-1998(R2003)
1999 ASME B18.25.3M-1998 Square and Rectangular Keys and Keyways: Width Tolerances and Deviations Greater than Basic Size