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The Description of 30312 Tapered Roller Bearing
------Tapered roller bearing main bear with radial primarily, the axial union load. Bearing outer ring rolling bearing capacity depends on the way Angle, the greater the carrying capacity of the larger Angle. This type of bearings is bearing separation, according to the bearing of the roller column number into a single, double row and four row circular cone roller bearings. The single row circular cone roller bearing clearance to users in the installation to adjust; Double row and four row circular cone roller bearings clearance has set up a file in the products based on user requirements given, don\\\'t need to adjust by the user.
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30312 Tapered roller bearings taper inner ring and outer ring have groove, tapered roller are arranged in between. All of the surface of the cone of lines in the projection of bearing the same point axis together. This design make circular cone roller bearings is especially suitable for bear composite (radial and axial) the load. The bearing axial load ability is the contact Angle α of the decision; Larger Angle α, axial load capacity is higher. Angle size by calculating coefficient e to say; E value is, the bigger the contact Angle is, the bigger the axial load bearing of the greater the applicability.
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30312 Tapered roller bearings are usually separated model, namely the belt roller and maintains a component of the inner circle ,circle of inner cone components and cone outside (outer) can apart installation.
------30312 Tapered roller bearings widely used in automotive, rolling mill, mining, metallurgical, plastic machinery, etc.
Bearing No.
Dimension(mm)
Basic Load rating(KN)
Weight
d
D
T
B
C
R
r
Cr
Cor
(kg)
30300 Series
303/28
28
68
19.75
18
14
1.5
1.5
0.341
30306
30
72
20.75
19
16
1.5
1.5
59.6
60.1
0.387
303/32
32
75
21.75
20
17
1.5
1.5
0.435
30307
35
80
22.75
21
18
2
1.5
75.3
82.6
0.515
30308
40
90
25.25
23
20
2
1.5
90.6
101
0.747
30309
45
100
27.25
25
22
2
1.5
113
128
0.984
30310
50
110
29.25
27
23
2.5
2
137
152
1.28
30311
55
120
31.5
29
25
2.5
2
149
170
1.63
30312
60
130
33.5
31
26
3
2.5
171.4
210
1.99
30313
65
140
36
33
23
3
2.5
195.9
241.7
2.43
30314
70
150
38
35
25
3
2.5
219
271.7
2.94
30315
75
160
40
37
31
3
2.5
252.8
318.8
3.63
30316
80
170
42.5
39
27
3
2.5
278.8
352.5
4.07
30317
85
180
44.5
41
28
4
3
304.9
388.2
4.88
30318
90
190
46.5
43
36
4
3
341
341
5.65
30319
95
200
49.5
45
38
4
3
368
483
6.7
30320
100
215
51.5
47
39
4
3
402
490
8.05
30321
105
225
53.5
49
41
4
3
432
568
9.15
30322
110
240
54.5
50
42
4
3
471
619
11
30324
120
260
59.5
55
46
4
3
562
754
13.9
30326
130
280
63.75
58
49
5
4
605
780
16.6
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