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Self Aligning Ball Bearing
Are You Aware About Giant Roller Bearings?
- Probably the first use of a bearing was back when the Egyptians were building the pyramids. They put round logs under the heavy stones so that they could roll them to the building site.
- This method is still used today when large, very heavy objects like the Cape Hatter lighthouse need to be moved.
Self aligning ball bearings are suitable
for applications where misalignment can arise from errors in mounting or shaft
deflection. The steel balls, cage, and inner ring can rotate freely at a
certain angle, as it is stated that the bearings have self-aligning features.
Accordingly, misalignment of the bearing shaft due to the machining and
installation of the shaft and housing will be automatically adjusted.
Self aligning ball
bearing is of the double type with a spherical raceway in the outer,
Self-aligning ball bearings of series 112 and 113 have an extended inner ring.
They are located on the shaft by dowel pins engaging in a slot at one side of
the inner ring. If a shaft is supported by pairs of self-aligning ball bearings
the slot must be in opposition to each other. The bores of series 112 and 113
bearings are made to j7 limits.
Physical Characteristics
- The self-aligning ball
bearing has two rows of balls.
- A common concave sphere
raceway in the outer ring.
- The center of whose curvature
meets that of the bearing it self, so that the inner ring, balls and cage
continue to rotate.
- The self-aligning ball
bearing with a tapered bore can easily be fit to the shaft with an adapter
assembly.
Advantages of Self Aligning Ball Bearings
- Have the lowest friction of
all rolling bearings.
- Run cooler even at high
speeds.
- Easy mounting and
dismounting.
- The permissible operating
speed is not dependent on the common criteria like heat generation or cage
stability and strength.
Application of Self Aligning Ball Bearings
- Self-aligning ball bearings
are used for commercial ground shafting applications.
- Since axial load capacity is
limited, self-aligning ball bearings are not suitable for applications
with heavy axial loads.
| 2206 |
2306 |
| 2207 |
2307 |
| 2208 |
2308 |
| 2209 |
2309 |
| 2210 |
2310 |
| 2211 |
2311 |
| 2212 |
2312 |
| 2213 |
2314 |
| 2214 |
2315 |
| 2215 |
2316 |
| 2216 |
2317 |
| 2217 |
2318 |
| 2218 |
2319 |
| 2219 |
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d
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D
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H
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| 1 |
1206 - K |
30 |
62 |
16 |
| 2 |
1207 - K |
35 |
72 |
17 |
| 3 |
1208 - K |
40 |
80 |
18 |
| 4 |
1209 - K |
45 |
85 |
19 |
| 5 |
1210 - K |
50 |
90 |
20 |
| 6 |
1211 - K |
55 |
100 |
21 |
| 7 |
1212 - K |
60 |
110 |
22 |
| 8 |
1213 - K |
65 |
120 |
23 |
| 9 |
1215 - K |
75 |
130 |
25 |
| 10 |
1217 - K |
85 |
150 |
28 |
| 11 |
2206 - K |
30 |
62 |
20 |
| 12 |
2208 - K |
40 |
80 |
23 |
| 13 |
2209 - K |
45 |
85 |
23 |
| 14 |
2210 - K |
50 |
90 |
23 |
| 15 |
2211 - K |
55 |
100 |
25 |
| 16 |
2215 - K |
75 |
130 |
31 |
| 17 |
1304 - K |
20 |
52 |
15 |
| 18 |
1306 - K |
30 |
72 |
19 |
| 19 |
1307 - K |
35 |
80 |
21 |
| 20 |
1308 - K |
40 |
90 |
23 |
| 21 |
1309 - K |
45 |
100 |
25 |
| 22 |
1310 - K |
50 |
110 |
27 |
| 23 |
1311 - K |
55 |
120 |
29 |
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