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Cixi Longyu Bearing Industrial Co.,Ltd.
/CIXI HUOPUSI IMP.&EXP.CO.,LTD.
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Metric Series
> 68 Series
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Designation
Principal dimensions(mm)
Basic load ratings(N)
Basic load ratings{kgf}
Speed ratings(rpm)
Abutment and fillet dimensions (mm)
Weight(g)
With shiled
Open type
With seal VV
With seal DD
d
D
B
B1
r(min)
Cr
Cor
Cr
Cor
Grease
Oil
da(min)
db(max)
Da(Max)
Db(min)
ra(max)
rb(max)
Open type
With shiled
ZZ
D·D
Z
681
-
-
-
1
3
1
-
0.05
80
23
8
2.5
130000
-
150000
1.4
-
2.6
-
0.05
-
0.03
-
681X
681XZZ
-
-
1.5
4
12
2
0.05
112
33
11
3.5
100000
-
120000
1.9
2.1
3.6
3.6
0.05
0.05
0.07
0.11
682
682ZZ
-
-
2
5
15
23
0.08
169
50
17
5
85000
-
100000
2.6
2.7
4.4
4.2
0.08
0.08
0.12
0.17
682X
682XZZ
-
-
2.5
6
18
2.6
0.08
208
74
21
7.5
71000
-
80000
3.1
3.7
5.4
5.4
0.08
0.08
0.23
0.29
683A
683AZZ
-
-
3
7
2
3
0.1
390
130
40
13
63000
-
75000
3.8
4
6.2
6.4
0.1
0.1
0.32
0.45
684A
684AZZ
-
-
4
9
2.5
4
-0.15
640
225
65
23
53000
-
63000
4.8
5.2
8.2
8.1
0.1
0.1
0.63
1.01
685
685ZZ
-
-
5
11
3
5
0.15
715
281
73
29
45000
-
53000
6.2
6.2
9.8
9.9
0.15
0.15
1.2
1.96
686A
686AZZ
686AVV
686ADD
6
13
3.5
5
0.15
1080
440
110
45
40000
38000
50000
7.2
7.4
11.8
11.7
0.15
0.15
1.91
2.69
687
687ZZ1
687VV
687DD
7
14
3.5
5
0.15
1170
510
120
52
40000
34000
45000
8.2
8.5
12.8
12.7
0.15
0.15
2.13
2.97
688A
688AZZ1
688AVV
688ADD
8
16
4
5
0.2
1610
710
164
73
36000
28000
43000
9.6
10.2
14.4
14.2
0.2
0.2
3.12
4.02
689
689ZZ1
689VV
689DD
9
17
4
5
0.2
1330
665
136
68
36000
24000
43000
10.6
11.5
15.4
15.2
0.2
0.2
3.53
4.43