Detailed description
N311EM cylindrical roller bearing
1. Dimension(mm) :d;55 D:120 B 29
2.Material:Bearing Steel
3. Old code: 2311H
4. Longer service life: High limiting speed:l little attention or maintenance.,
5.Our bearings supports Shen Zhou manned spacecraft and the long march no.2 rocket well.
6. HRB bearings passed through: ISO9001-2000.GJB9001A-2001.TS16949-2002
7.Precision Rating:P0 P5 P6
8.Orign:China
9.Bearing NO. N311EM/Z1 N311EM/Z2
Dear customer,if you need s[ecial specifications,our manufacturer also can make it with a little more time.Hope what we offer is just what you want!









