超清版 GB/T 25763-2024 滚动轴承 汽车变速箱用滚针轴承

ICS 21.100.20
CCS J 11
GB/T 25763—2024
滚动轴承　汽车变速箱用滚针轴承
Rolling bearings—Needle roller bearings for automotive transmission
2024⁃09⁃29 发布2025⁃01⁃01 实施
国家市场监督管理总局
国家标准化管理委员会
发 布
代替 GB/T 25763—2010


目　　次
前言··························································································································Ⅲ
1　范围·······················································································································1
2　规范性引用文件········································································································1
3　术语和定义··············································································································2
4　符号·······················································································································2
5　变速箱用滚针轴承分类·······························································································2
6　代号方法·················································································································2
6.1　代号构成···········································································································2
6.2　类型代号和尺寸系列代号······················································································2
6.3　后置代号···········································································································3
6.4　代号示例···········································································································4
7　结构类型·················································································································5
8　外形尺寸···············································································································12
9　技术要求···············································································································12
9.1　材料及热处理····································································································12
9.2　公差················································································································12
9.3　滚针表面形状····································································································15
9.4　表面粗糙度·······································································································15
9.5　游隙················································································································15
9.6　残磁················································································································15
9.7　清洁度·············································································································15
9.8　旋转灵活性·······································································································15
9.9　外观质量··············