Unverified85% confidenceDecision RuleTime unknown
高速旋转的滚珠轴承（>10000rpm）应选低黏度锂基脂或油脂NLGI 1-2级；重载低速齿轮则需高黏度（ISO VG 220以上）齿轮油或NLGI 3级脂，用错会导致要么润滑不足要么阻力过大发热
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