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6221NR
Basic parameters
Deep groove ball bearings
Series
6221NR
Model
Main Size(mm)
105
d
190
D
36
B
2.1
r smin 1
0.5
rNS minimum
Rated base load
133
Dynamic load Cr/kN
105
Static load Cor/kN
13,600
Dynamic load Cr/kgf
10,700
Static load Cor/kgf
Allowable speed(rpm)
3,400
Grease lubrication open ZZ LLB
4,000
Oil lubrication open Z LB
2,300
LLU
Bearing number
6221
open
ZZ
open
―
Non-contact seal
LLU
Low contact seal
N
With Stop groove 2
NR
With snap ring 2
Stop groove Size(mm)
183.64
D1 maximum
5.69
a maximum
3.5
b minmum
0.6
r 0maximum
Stop ring Size(mm)
202.9
D2 maximum
3.1
f maximum
Installation relationship size(mm)
116
da minmum
125
da maximum 3
179
Da maximum
205
Dx (about)
8.4
C Ymaximum
3.1
C zminmum
2
r asminmum
0.5
r Nas maximun
Weight 4 (kg)
3.7
(about)
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