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SIR...ES Series  
Bearing No.
Boundary dimensions(mm)
Mass
d
B
dk
C1
d2
G
h1
l3
l4
d4
d6
b
rs
α°
Kg
max
max
6H
min
max
max
max
min
≈
≈
SIR20ES
20
16
29
19
56
M16×1.5
50
17
78
25
36
17
0.3
9
0.37
SIR25ES
25
20
35.5
23
56
M16×1.5
50
17
78
25
36
21
0.6
7
0.43
SIR30ES
30
22
40.7
28
64
M22×1.5
60
23
92
32
40
26
0.6
6
0.7
SIR35ES
35
25
47
30
78
M28×1.5
70
29
109
40
50
28
0.6
6
1.1
SIR40ES
40
28
53
35
94
M35×1.5
85
36
132
49
60
33
0.6
7
2.1
SIR50ES
50
35
66
40
116
M45×1.5
105
46
163
61
72
37
0.6
6
3.3
SIR60ES
60
44
80
50
130
M58×1.5
130
59
195
75
90
46
1
6
5.5
SIR70ES
70
49
92
55
154
M65×1.5
150
66
227
86
100
51
1
6
8.6
SIR80ES
80
55
105
60
176
M80×2
170
81
258
102
125
55
1
6
12
SIR100ES
100
70
130
70
230
M110×2
235
111
350
138
166
65
1
7
28
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