1.Category: Clindrical roller bearings
2.Model:NNU4980K
3.d: 400 mm
4.D: 540 mm
5.B: 140 mm
6.Cr: 1690 N
7.COr: 4300 N
8. Grease RPM: 940 1/min
9.Oil RPM: 1100 1/min
10.m: 84.1 kg
11.New Model:NNU4980K
12.Old Modle: NNU4980K
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