NTN Self-Aligning Ball Bearing - Straight Bore, 1309

NTN Self-Aligning Ball Bearing - Straight Bore, 1309

SKU: NTN 1309

$29.69

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Item # d D B r Static Load Rating Dynamic Load Rating
 1301 0.4724 in
12.000 mm		 1.4567 in
37.000 mm		 0.4724 in
12.000 mm		 0.0394 in
1.000 mm		 365 lbf
1620 N
1.62 kN		 1650 lbf
7350 N
7.35 kN
 1302 0.5906 in
15.000 mm		 1.6535 in
42.000 mm		 0.5118 in
13.000 mm		 0.0394 in
1.000 mm		 515 lbf
2290 N
2.29 kN		 2180 lbf
9700 N
9.70 kN
 1303 0.6693 in
17.000 mm		 1.8504 in
47.000 mm		 0.5512 in
14.000 mm		 0.0394 in
1.000 mm		 720 lbf
3200 N
3.20 kN		 2860 lbf
12700 N
12.70 kN
 1304 0.7874 in
20.000 mm		 2.0472 in
52.000 mm		 0.5906 in
15.000 mm		 0.0433 in
1.100 mm		 755 lbf
3350 N
3.35 kN		 2830 lbf
12600 N
12.60 kN
 1305 0.9843 in
25.000 mm		 2.4409 in
62.000 mm		 0.6693 in
17.000 mm		 0.0433 in
1.100 mm		 1120 lbf
5000 N
5.00 kN		 4100 lbf
18200 N
18.20 kN
 1306 1.1811 in
30.000 mm		 2.8346 in
72.000 mm		 0.7480 in
19.000 mm		 0.0433 in
1.100 mm		 1420 lbf
6300 N
6.30 kN		 4800 lbf
21400 N
21.40 kN
 1307 1.3780 in
35.000 mm		 3.1496 in
80.000 mm		 0.8268 in
21.000 mm		 0.0591 in
1.500 mm		 1760 lbf
7850 N
7.85 kN		 5700 lbf
25300 N
25.30 kN
 1308 1.5748 in
40.000 mm		 3.5433 in
90.000 mm		 0.9055 in
23.000 mm		 0.0591 in
1.500 mm		 2180 lbf
9700 N
9.70 kN		 6700 lbf
29800 N
29.80 kN
 1309 1.7717 in
45.000 mm		 3.9370 in
100.000 mm		 0.9843 in
25.000 mm		 0.0591 in
1.500 mm		 2860 lbf
12700 N
12.70 kN		 8650 lbf
38500 N
38.50 kN
 1310 1.9685 in
50.000 mm		 4.3307 in
110.000 mm		 1.0630 in
27.000 mm		 0.0787 in
2.000 mm		 3150 lbf
14100 N
14.10 kN		 9800 lbf
43500 N
43.50 kN
 1311 2.1654 in
55.000 mm		 4.7244 in
120.000 mm		 1.1417 in
29.000 mm		 0.0787 in
2.000 mm		 4000 lbf
17900 N
17.90 kN		 11600 lbf
51500 N
51.50 kN
 1312 2.3622 in
60.000 mm		 5.1181 in
130.000 mm		 1.2205 in
31.000 mm		 0.0827 in
2.100 mm		 4700 lbf
20800 N
20.80 kN		 12900 lbf
57500 N
57.50 kN
 1313 2.5591 in
65.000 mm		 5.5118 in
140.000 mm		 1.2992 in
33.000 mm		 0.0827 in
2.100 mm		 5150 lbf
22900 N
22.90 kN		 14100 lbf
62500 N
62.50 kN
 1314 2.7559 in
70.000 mm		 5.9055 in
150.000 mm		 1.3780 in
35.000 mm		 0.0827 in
2.100 mm		 6250 lbf
27700 N
27.70 kN		 16900 lbf
75000 N
75.00 kN
 1315 2.9528 in
75.000 mm		 6.2992 in
160.000 mm		 1.4567 in
37.000 mm		 0.0827 in
2.100 mm		 6750 lbf
30000 N
30.00 kN		 18000 lbf
80000 N
80.00 kN
 1316 3.1496 in
80.000 mm		 6.6929 in
170.000 mm		 1.5354 in
39.000 mm		 0.0827 in
2.100 mm		 7400 lbf
33000 N
33.00 kN		 20000 lbf
89000 N
89.00 kN
 1317 3.3465 in
85.000 mm		 7.0866 in
180.000 mm		 1.6142 in
41.000 mm		 0.1181 in
3.000 mm		 8550 lbf
38000 N
38.00 kN		 22100 lbf
98500 N
98.50 kN
 1318 3.5433 in
90.000 mm		 7.4803 in
190.000 mm		 1.6929 in
43.000 mm		 0.1181 in
3.000 mm		 10000 lbf
44500 N
44.50 kN		 26300 lbf
117000 N
117.00 kN
 1319 3.7402 in
95.000 mm		 7.8740 in
200.000 mm		 1.7717 in
45.000 mm		 0.1181 in
3.000 mm		 11500 lbf
51000 N
51.00 kN		 29000 lbf
129000 N
129.00 kN
 1320 3.9370 in
100.000 mm		 8.4646 in
215.000 mm		 1.8504 in
47.000 mm		 0.1181 in
3.000 mm		 12900 lbf
57500 N
57.50 kN		 31500 lbf
140000 N
140.00 kN






1. Design features and characteristics

The outer ring raceway of self-aligning ball bearings forms a spherical surface whose center is common to the bearing center. The inner ring of the bearing has two raceways.
The balls, cage, and inner ring of these bearings are capable of shifting in order to compensate for a certain degree of misalignment with the outer rings. As a result, the bearing is able to align itself and compensate for shaft / housing finishing unevenness, bearing fitting error, and other sources of misalignment as shown in Fig. 1.
Since axial load capacity is limited, self- aligning ball bearing are not suitable for applications with heavy axial loads.

It is recommended to use an adapter on a self-aligning ball bearing with a tapered bore inner diameter for ease of installation and disassembly. These bearings and adapters are often used on drive shaft applications.

 

2. Standard cage type


All bearing series are equipped with a pressed cage, except 2321S and 2322S, which are equipped with a machined cage.
Self-Aligning Ball Bearings
It is recommended to use an adapter on a self-aligning ball bearing with a tapered bore inner diameter for ease of installation and disassembly. These bearings and adapters are often used on drive shaft applications.

Table 1 Standard cage types of spherical ball bearings

 




 

3. Ball protrusion


Bearings with part numbers listed in Table 2 below have balls which protrude slightly from the bearing face as illustrated in Fig. 2. The total width dimensions are shown in Table 2.

4.  Allowable misalignment angle

The allowable misalignment angle can be determined by the following function. This degree of allowable misalignment may be limited by the design of mating components around the bearing.
Normal load ....................... 1/15

 

5.  Precautions for using self-aligning ball bearings

Self-aligning ball bearings are unable to support large axial loads and therefore axial loading shall be limited.
Please consider using self-aligning roller bearings when a large axial load is to be applied.

Recommended for the NTN Self-Aligning Ball Bearing - Straight Bore, 1309

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