詳細(xì)信息
軸承代號: NACHI 7211BDB - 角接觸球軸承（背對背DB）
軸承尺寸
d = 55D = 100
B = 21
a = 22.1
da1(min) = 64
da2(min) = 60
Da1(max) = 91
Da2(max) = 94.6
ra(max) = 1.5
ra1(max) = 1
Mass = 0.635
額定動(dòng)負(fù)荷: 78000
額定靜負(fù)荷: 74500
極限轉(zhuǎn)速（潤滑脂潤滑）: 4000
極限轉(zhuǎn)速（油潤滑）: 5500
