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Home
About Us
Product
Deep groove ball bearing
Angular contact ball bearing
Thrust ball bearing
Self-aligning ball bearing
Insert bearing
Cylindrical Roller Bearing
Pillow block bearing
Joint bearing
Miniature bearing
Spherical roller bearing
Clutch bearing
Needle roller bearing
Tapered roller bearing
Wheel Hub Bearing
Stainless steel bearing
Linear guide bearing
Linear bearing
Application
Automotive
Motorcycle
Renewable Energy
Food Processing
Home Electrical Appliance
Agricultural Industry
Electrical Motor and Gear Box/Speed Reducer
Lumber and Mining Equipment
News
Company news
Industry News
Contact Us
Home
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STARK-Bearings
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Metric Series
> 68 Series
68 Series
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Descriptions and Technical Parameters
Inquiry
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
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