NTN 7221DF 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 max. - 178 mm
db min - 112 mm
ra max. - 2 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
2010-11-06
2011-06-13
2012-01-27
2012-09-26
2013-06-05
2014-02-26
2014-12-05
2015-09-22
2016-07-17
2017-05-19
2018-04-06
2019-03-08
2020-02-09
2021-01-24
2022-01-08
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