NTN 4T-30307 Bearing
d - 35 mm
D - 80 mm
T - 22.75 mm
B - 21 mm
C - 18 mm
ra1 max. - 1.5 mm
a - 17 mm
r min. - 2 mm
r1 min. - 1.5 mm
da min. - 45 mm
Da min - 70 mm
Da max. - 71.5 mm
db max. - 45 mm
Db min. - 74 mm
ra max. - 2 mm
Sa - 3 mm
Sb - 4.5 mm
Weight - 0.54 Kg
Basic dynamic load rating (C) - 75 kN
Basic static load rating (C0) - 77 kN
(Grease) Lubrication Speed - 5 000 r/min
(Oil) Lubrication Speed - 6 600 r/min
Calculation factor (e) - 0.31
Calculation factor (Y0) - 1.05
Calculation factor (Y2) - 1.9
- #number
- ID(内径)
- OD(外径)
- B(厚度)
NTN Bearings
2010-10-30
2011-06-04
2012-01-19
2012-09-16
2013-05-29
2014-02-18
2014-11-26
2015-09-14
2016-07-07
2017-05-12
2018-03-28
2019-02-26
2020-01-30
2021-01-15
2022-01-01
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