NTN 7221DT Bearing
d - 105 mm
D - 190 mm
B - 36 mm
ra1 max. - 1 mm
Angle (α) - 25 °
a - 60.5 mm
r min. - 2.1 mm
r1 min. - 1.1 mm
2B - 72 mm
da min. - 117 mm
Da max. - 178 mm
db min - 112 mm
ra max. - 2 mm
Db max - 183 mm
Weight - 7.58 Kg
Basic dynamic load rating (C) - 254 kN
Basic static load rating (C0) - 283 kN
(Grease) Lubrication Speed - 3 000 r/min
(Oil) Lubrication Speed - 4 000 r/min
- #number
- ID(内径)
- OD(外径)
- B(厚度)
NTN Bearings
2011-02-13
2011-09-25
2012-05-14
2013-01-18
2013-10-04
2014-07-05
2015-04-19
2016-02-06
2016-12-06
2017-10-13
2018-09-05
2019-08-15
2020-07-21
2021-07-07
2022-06-22
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