 |
 |
Pr = XFr
+ YFa
|
e |
|
|
x
|
y
|
x
|
y
|
0.010
0.020
0.040
0.070
0.10
0.15
0.20
0.30 |
0.18
0.20
0.24
0.27
0.29
0.32
0.35
0.38 |
1
|
0
|
0.56
|
2.46
2.14
1.83
1.61
1.48
1.35
1.25
1.13
|
Por = 0.6Fr + 0.5Fa
When Por £¼Fr, Let
Por = Fr |
Bearing
accuracy
Bearing accurany refers to accuracy on and rotation. According
to chinese national standard, the bearing accuracy is divided
into five classes: Class 0, Class 6, Class 5, Class 4 and Class
2. All of them are equivalent to ISO standard.The comparison
of different accuracy classes are shown as follows: |
Comparison
table of accuracy grade
Standard
|
Accuracy
Grade
|
GB
ISO
ANSI
SKF
DIN
JIS
|
0
0
ABEC1
PO
PO
0
|
6
6
ABEC3
P6
P6
6
|
5
5
ABEC5
P5
P5
5
|
4
4
ABEC7
P4
P4
4
|
2
2
ABEC9
P2
P2
2
|
|
Main
size(mm)
|
Load
rating(N)
|
Maxronout
speed (rpm)
|
Bearing
No.
|
Fixing
size(mm)
|
Weight(kg)
|
d
|
D
|
B
|
B1
|
D1
|
C1
|
C2
|
rsmin1)
|
Cr
|
Cor
|
Grease
|
Oil
|
Open
|
Z
|
ZZ
|
FL
|
FL...Z
|
FL...ZZ
|
Ds
|
dh
|
R
|
Open
|
FL
|
1.016
|
3.175
|
1.191
|
-
|
-
|
-
|
-
|
0.08
|
97
|
26
|
110000
|
130000
|
R01
|
-
|
-
|
-
|
-
|
-
|
1.6
|
2.5
|
0.08
|
0.04
|
-
|
1.191
|
3.967
|
1.588
|
2.380
|
5.16
|
0.33
|
0.79
|
0.08
|
159
|
44
|
93000
|
110000
|
R0
|
R0Z
|
R0ZZ
|
FLR0
|
FLR0Z
|
FLR0ZZ
|
2
|
3.2
|
0.08
|
0.09
|
0.11
|
1.397
|
4.762
|
1.984
|
2.779
|
5.94
|
0.58
|
0.79
|
0.08
|
185
|
56
|
81000
|
95000
|
R1
|
R1Z
|
R1ZZ
|
FLR1
|
FLR1Z
|
FLR1ZZ
|
2.2
|
3.8
|
0.08
|
0.17
|
0.21
|
1.984
|
6.350
|
2.380
|
3.571
|
7.52
|
0.58
|
0.79
|
0.08
|
279
|
89
|
67000
|
79000
|
R1-4
|
R1-4Z
|
R1-4ZZ
|
FLR1-4
|
FLR1-4Z
|
FLR1-4ZZ
|
2.8
|
5.5
|
0.08
|
0.35
|
0.41
|
2.380
|
4.762
|
1.588
|
2.380
|
5.94
|
0.46
|
0.79
|
0.08
|
124
|
42
|
73000
|
85000
|
R133
|
R133Z
|
R133ZZ
|
FLR133
|
FLR133Z
|
FLR133ZZ
|
3.2
|
4
|
0.08
|
0.12
|
0.16
|
7.938
|
2.779
|
3.571
|
9.12
|
0.58
|
0.79
|
0.13
|
430
|
152
|
56000
|
66000
|
R1-5
|
R1-5Z
|
R1-5ZZ
|
FLR1-5
|
FLR1-5Z
|
FLR1-5ZZ
|
3.2
|
7
|
0.1
|
0.69
|
0.76
|
3.175
|
6.350
|
2.380
|
2.779
|
7.52
|
0.58
|
0.79
|
0.08
|
284
|
96
|
59000
|
70000
|
R144
|
R144Z
|
R144ZZ
|
FLR144
|
FLR144Z
|
FLR144ZZ
|
4
|
5.5
|
0.08
|
0.27
|
0.33
|
7.938
|
2.779
|
3.571
|
9.12
|
0.58
|
0.79
|
0.08
|
560
|
180
|
54000
|
63000
|
R2-5
|
R2-5Z
|
R2-5ZZ
|
FLR2-5
|
FLR2-5Z
|
FLR2-5ZZ
|
4
|
7
|
0.08
|
0.61
|
0.68
|
9.525
|
2.779
|
3.571
|
10.72
|
0.58
|
0.79
|
0.13
|
640
|
224
|
49000
|
58000
|
R2-6
|
R2-6Z
|
R2-6ZZ
|
FLR2-6
|
FLR2-6Z
|
FLR2-6ZZ
|
4
|
8.7
|
0.1
|
0.88
|
0.96
|
9.525
|
3.967
|
3.967
|
11.18
|
0.76
|
0.76
|
0.3
|
640
|
224
|
49000
|
58000
|
R2
|
R2Z
|
R2ZZ
|
FLR2
|
FLR2Z
|
FLR2ZZ
|
4.8
|
7.8
|
0.3
|
1.3
|
1.5
|
12.700
|
4.366
|
4.366
|
-
|
-
|
-
|
0.3
|
1150
|
395
|
43000
|
51000
|
R2
|
R2Z
|
R2ZZ
|
-
|
-
|
-
|
4.8
|
11
|
0.3
|
2.5
|
-
|
3.967
|
7.938
|
2.779
|
3.175
|
9.12
|
0.58
|
0.91
|
0.08
|
335
|
133
|
51000
|
60000
|
R155
|
R155Z
|
R155ZZ
|
FLR155
|
FLR155Z
|
FLR155ZZ
|
4.8
|
7
|
0.08
|
0.54
|
0.61
|
4.762
|
7.938
|
2.779
|
3.175
|
9.12
|
0.58
|
0.91
|
0.08
|
395
|
143
|
49000
|
58000
|
R156
|
R156Z
|
R156ZZ
|
FLR156
|
FLR156Z
|
FLR156ZZ
|
5.6
|
7
|
0.08
|
0.44
|
0.51
|
9.525
|
3.175
|
3.175
|
10.72
|
0.58
|
0.79
|
0.08
|
710
|
268
|
46000
|
55000
|
R166
|
R166Z
|
R166ZZ
|
FLR166
|
FLR166Z
|
FLR166ZZ
|
5.6
|
8.7
|
0.08
|
0.80
|
0.89
|
12.700
|
3.967
|
-
|
-
|
-
|
-
|
0.3
|
1310
|
490
|
41000
|
48000
|
R3
|
-
|
-
|
-
|
-
|
-
|
6.4
|
11
|
0.3
|
2.2
|
-
|
12.700
|
4.978
|
4.978
|
14.35
|
1.07
|
1.07
|
0.3
|
1310
|
490
|
41000
|
48000
|
R3
|
R3Z
|
R3ZZ
|
FLR3
|
FLR3Z
|
FLR3ZZ
|
6.4
|
11
|
0.3
|
2.4
|
2.7
|
6.350
|
9.525
|
3.175
|
3.175
|
10.72
|
0.58
|
0.91
|
0.08
|
268
|
136
|
43000
|
51000
|
R168
|
R168Z
|
R168ZZ
|
FLR168
|
FLR168Z
|
FLR168ZZ
|
7.2
|
8.7
|
0.08
|
0.60
|
0.69
|
12.700
|
3.175
|
4.762
|
13.89
|
0.58
|
1.14
|
0.13
|
830
|
370
|
39000
|
46000
|
R188
|
R188Z
|
R188ZZ
|
FLR188
|
FLR188Z
|
FLR188ZZ
|
7.2
|
11.8
|
0.1
|
1.6
|
1.7
|
15.875
|
4.978
|
4.978
|
17.53
|
1.07
|
1.07
|
0.3
|
1480
|
615
|
36000
|
43000
|
R4
|
R4Z
|
R4ZZ
|
FLR4
|
FLR4Z
|
FLR4ZZ
|
8
|
14.2
|
0.3
|
4.4
|
4.8
|
19.050
|
-
|
7.142
|
-
|
-
|
-
|
0.41
|
2340
|
885
|
34000
|
40000
|
-
|
RA4Z
|
RA4ZZ
|
-
|
-
|
-
|
8.4
|
17
|
0.4
|
112)
|
-
|
9.525
|
22.225
|
-
|
7.142
|
24.61
|
-
|
1.57
|
0.41
|
3300
|
1400
|
31000
|
37000
|
-
|
R6Z
|
R6ZZ
|
-
|
-
|
-
|
-
|
20.2
|
0.4
|
142)
|
152)
|
Attention:
1)The
minimum size for r. 1N=0.102kgf
2)The weight of bearing with dustproof two sides. |
|