|
Bearing No
|
Principal dimensions
£¨mm£©
|
|
Basic load ratings
(kn)
|
|
d
|
D
|
B
|
rsmin
|
Grease
|
Oil
|
Dynamic
|
Static
|
|
625
|
5
|
16
|
5
|
0.3
|
32000
|
40000
|
1.45
|
0.74
|
|
606
|
6
|
17
|
6
|
0.3
|
32000
|
40000
|
1.514
|
0.74
|
|
626
|
6
|
19
|
6
|
0.3
|
34000
|
40000
|
2.161
|
1.16
|
|
607
|
7
|
19
|
6
|
0.3
|
34000
|
40000
|
2.161
|
1.163
|
|
627
|
7
|
22
|
7
|
0.3
|
32000
|
37000
|
2.534
|
1.35
|
|
608
|
8
|
22
|
7
|
0.3
|
32000
|
37000
|
2.534
|
1.356
|
|
628
|
8
|
24
|
8
|
0.3
|
31000
|
36000
|
2.566
|
1.35
|
|
609
|
9
|
24
|
7
|
0.3
|
32000
|
38000
|
2.566
|
1.356
|
|
629
|
9
|
26
|
8
|
0.3
|
30000
|
35000
|
3.200
|
1.47
|
|
6000
|
10
|
26
|
8
|
0.3
|
30000
|
35000
|
3.520
|
1.95
|
|
6200
|
10
|
30
|
9
|
0.6
|
25000
|
30000
|
3.928
|
2.23
|
|
6001
|
12
|
28
|
8
|
0.3
|
26000
|
30000
|
3.930
|
2.23
|
|
6201
|
12
|
32
|
10
|
0.6
|
22000
|
26000
|
5.241
|
3.05
|
|
6002
|
15
|
32
|
9
|
0.3
|
18000
|
24000
|
4.300
|
2.51
|
|
6202
|
15
|
35
|
11
|
0.6
|
19000
|
23000
|
5.864
|
3.49
|
|
6003
|
17
|
35
|
10
|
0.3
|
17000
|
22000
|
5.240
|
3.04
|
|
6203
|
17
|
40
|
12
|
0.6
|
16000
|
20000
|
7.360
|
4.48
|
Note:Specific operational requirements such as the rotary
speed beyond the specified limit can be further put forward
by the clients and we will arrange specific design and machning
based on clients' requirements.
Bearing Precision
The precision of bearings refers
to the size precision and running precision. The following
is a table of contrast between different standard precisions
practiced internationally.
|
Standard Code
|
Precision class
|
|
China GB
|
0
|
6
|
5
|
4
|
2
|
|
ISO
|
0
|
6
|
5
|
4
|
2
|
|
ANSI
|
ABEC1
|
ABEC3
|
ABEC5
|
ABEC7
|
AREC9
|
|
SKF
|
P0
|
P6
|
P5
|
P4
|
P2
|
|
DIN
|
P0
|
P6
|
P5
|
P4
|
P2
|
|
JIS
|
0
|
6
|
5
|
4
|
2
|
Ferrule,Stelel
Ball and Material
High-carbon chromium bearing steel
is the best material for bearing. It features high hardness,
strong rolling fatigue resistance, abrasion resistant and
stable size.
Chemical Composition of Gcr15 Steel
Element Content
£¨wt%£© |
C
0.95-1.05
|
Cr
1.40-1.65
|
Si
0.15-0.35
|
Mn
0.25-0.45
|
P
¡Ü 0.027
|
S
0.02
|
|
Element
Content
£¨wt%£©
|
Ni
<0.23
|
Cu
¡Ü0.25
|
Mo
¡Ü0.1
|
Sn
<0.03
|
As
<0.04
|
Ti
<0.005
|
|
Element
Content
£¨wt%£©
|
Sb
<0.002
|
Pb
<0.002
|
O
<0.001
|
Ai
<0.05
|
Ca
<0.01
|
|
|
Bore
diameter
d(mm) |
group
2 |
Standard
group |
group
3 |
group
4 |
group
5 |
| Over
|
To |
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
Min.
|
Max.
|
| 2.5 |
6 |
0 |
7 |
2 |
13 |
8 |
23 |
- |
- |
- |
- |
| 6 |
10 |
0 |
7 |
2 |
13 |
8 |
23 |
14 |
29 |
20 |
37 |
| 10 |
18 |
0 |
9 |
3 |
18 |
11 |
25 |
18 |
33 |
25 |
45 |
| 18 |
24 |
0 |
10 |
5 |
20 |
13 |
28 |
20 |
36 |
28 |
48 |
| 24 |
30 |
1 |
11 |
5 |
20 |
13 |
28 |
23 |
41 |
30 |
53 |
30 |
40 |
1 |
11 |
6 |
20 |
15 |
33 |
28 |
46 |
40 |
64 |
40 |
50 |
1 |
11 |
6 |
23 |
18 |
36 |
30 |
51 |
45 |
73 |
Lubrication
The main purpose of lubrication are to reduce
friction and wear in the contact areas as direct metallic
contact between the bearing rings rolling elements and cage
is prevented by an oil film.Therefore,the effects of lubrication
may be briefly explained as followings:
(1)Reduction of friction and wear.
(2)Extension of fatigue life.
The fatigue life of bearings depends greatly upon to the viscosity
and film thickness of oil between the rolling contact surfaces.
(3)Circular lubrication may be used to carry away frictional
heat or beat transferred from outside to prevent the bearing
from overheating and the oil from deteriorating.
(4)Adequate lubrication also helps to prevent foreigh material
from entering the bearings and to prevent bearings from corrosion
or rusting.
Lubricating method and Lubricant
Sometimes grease and oil.
Packing
Generally Bearing
is to be packed in the plastic pipes of the thin membrane
bags(10 sets), then to be packed into the medium size Paper
Box(50 sets or 100 sets). Thenall to be packed in to the carton
as the extermal
The users who have any requirements ins packing may write
them down in the contract.
|
