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Self-aligning Ball Bearings

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Self-Aligning Ball Bearings

Self-Aligning Ball Bearings

Self-aligning ball bearings are double row, self-retaining units comprising outer rings with a concave raceway, inner rings with a cylindrical or tapered bore and ball and cage assemblies. The bearings are available in open and sealed designs.

  • Introduction to the Self-aligning ball bearings

  • The self-aligning ball bearing is between the inner ring of the two rolling roads and the outer ring of the spherical side. The curvature center of its outer ring surface is consistent with the bearing center, so it has the same heart adjustment function as the automatic center of the bearing. Tuning the bearing of the heart is mainly tolerated by the radial hybrid, and at the same time, it can withstand smaller axial loads. When a shaft and case are scratched, it can be automatically changed without increasing the burden on the bearings. The rolling roller bearings can withstand the axial load of the radial load and the two directions. The radial load capacity is large and suitable for situations where there is a heavy load and impact load.

  • The structure of the self-aligning ball bearings 

The structure of the self-aligning ball bearing is divided into two types: one is the cylindrical hole structure, and the other is the cone hole structure. The material of the shelf is steel plates, synthetic resin, etc. The outer ring is spherical and has automatic heart adjustment, which can compensate for the errors caused by different heart degrees and axes.

  • The relative inclinedness of the inner and outer ring of the cylindrical pillar does not exceed 3 degrees. The cone holes can be installed directly on the cylindrical shaft with a tight set, and the removal cylinder can be installed or used with a tight set.

  • Classification of the self-aligning ball bearings 

  • The self-aligning ball bearing can be classified as structure:

  • Micro series: 10X, 12X, 13X

  • General Series: 12XX, 13XX, 22XX, 23XX


  • According to the load direction or contact Angle, the self-aligning ball bearings can be divided into: 

  • Radial bearing: It is mainly used to bear rolling bearings with radial load, and its nominal contact angle is from 0 to 45. According to the nominal contact angle, it is divided into radial contact bearing (the nominal contact angle of the nominal contact angle 0) and the heart angle contact bearing (the nominal contact angle greater than 0 to 45 directional bearing).


  • Axial bearing: Rolling bearings are mainly used to withstand the axial load, and their nominal contact angle is greater than 45 to 90. According to the nominal contact angle, it is divided into an axial contact bearing (thrust bearing with a nominal contact angle of 90 degrees) and a thrust angle contact bearing (the contact angle is larger than 45 degree but less than 90 degree).


  • The self-aligning ball bearings are divided into the types of rolling elements:

  • Ball bearings 

  • Roller bearings

  • Naming rules of the self-aligning ball bearings

  • The naming rules of the self-aligning ball bearing are named after their structure, size, accuracy, and other characteristics and use. It is usually composed of basic models, suffixes, and rear codes.


  • Basic models

  • Consisting of four parts, which represent the bearings type, size series, diameter series, and diameter.

  • Suffix

  • It is used to identify the bearing's precision level, sealing type, and internal structure changes.

  • Rear code

  • It is used to identify some special requirements or special structures of the bearing, such as materials, heat treatment, lubricants, etc of the bearings.


It should be noted that the models and codes of the eager ball bearings are named and identified according to their structure, size, accuracy, and other characteristics and uses. Different models and codes represent different bearing types, sizes, and accuracy levels.


  • Material of the self-aligning ball bearings

  • The material of the self-aligning ball bearing is divided into bearing steel, stainless steel, carbon steel, plastic, etc. Bearing steel is the most commonly used material, with high hardness and abrasion resistance, and can be used for high-speed and high-load application scenarios. Stainless steel can resist corrosion and is commonly used in strong corrosive occasions such as marine environments and the chemical industry. The inner and outer ring of carbon steel bearing is carbon steel. The keeper is made of plastic or phenolic resin materials. It has the characteristics of low cost, low accuracy, and low speed. It is suitable for low-speed and low-load occasions. Plastic-bearing inner and outer circles are made of plastic materials. The keeper is made of plastic or metal materials. It has the characteristics of low cost, low noise, and high speed. It is suitable for occasions with high speed and low load.


  • Application field of the self-aligning ball bearings

  • The self-aligning ball bearing application fields are very wide, including various industrial machinery fields, such as metallurgy, mining, chemical industry, machine tools, etc. They can be used to support the steering components of large trucks and vehicle steering systems, and they can also be used for transmission devices in industries such as textiles and food processing. At the same time, the center of the heart can also be used to withstand heavy load and impact loads, precision instruments, low-noise motors, cars, motorcycles, metallurgy, rolling machines, mine, petroleum, paper making, cement, sugar, and other industries and general machinery.


  • The advantage of FV self-aligning ball bearings

  • This type of bearing is different in size. FV has many models in stock for standard models and can be shipped quickly in 3-5 days.


  • The models list of self-aligning ball bearings that FV can provide:

DesignationPrincipal dimensionsBasic load ratingsSpeed ratings
DynamicStaticReference speedLimiting speed

d[mm]D[mm]B[mm]C[kN]C0[kN][r/min][r/min]
  1320 KM  100  215  47  143  57  6 000  4 000
  2220  100  180  46  97.5  40.5  6 700  4 800
  2220 K  100  180  46  97.5  40.5  6 700  4 800
  2220 KM  100  180  46  97.5  40.5  6 700  4 800
  2220 M  100  180  46  97.5  40.5  6 700  4 800
  2320 M  100  215  73  190  80  5 600  4 000
  1222  110  200  38  88.4  39  6 700  4 300
  1222 K  110  200  38  88.4  39  6 700  4 300
  1322 KM  110  240  50  163  72  5 300  3 600
  1322 M  110  240  50  163  72  5 300  3 600
  2222  110  200  53  124  52  6 000  4 300
  2222 K  110  200  53  124  52  6 000  4 300
  2222 KM  110  200  53  124  52  6 000  4 300
  2222 M  110  200  53  124  52  6 000  4 300
  1224 KM  120  215  42  119  53  6 300  4 000
  1224 M  120  215  42  119  53  6 300  4 000
  1226 KM  130  230  46  127  58.5  5 600  3 600
  1226 M  130  230  46  127  58.5  5 600  3 600
  13030  150  225  56  57.2  22.4  5 600  3 400
  13940  200  280  60  60.5  28  4 300  2 600
  13944  220  300  60  60.5  29  3 800  2 400
  13948  240  320  60  60.5  30.5  3 600  2 200
  2204 E-2RS1TN9  20  47  18  12.7  3.4  28 000  10 000
  2204 ETN9  20  47  18  16.8  4.15  28 000  20 000
  2304 E-2RS1TN9  20  52  21  14.3  4  24 000  9 000
  2304 M  20  52  21  18.2  4.75  26 000  19 000
  2304 TN9  20  52  21  18.2  4.75  26 000  19 000
  1205 EKTN9  25  52  15  14.3  4  28 000  18 000
  1205 EM  25  52  15  14.3  4  28 000  18 000
  1205 ETN9  25  52  15  14.3  4  28 000  18 000
  1305 EKTN9  25  62  17  19  5.4  22 000  15 000
  1305 ETN9  25  62  17  19  5.4  22 000  15 000
  2205 E-2RS1KTN9  25  52  18  14.3  4  26 000  9 000
  2205 E-2RS1TN9  25  52  18  14.3  4  26 000  9 000
  2205 EKTN9  25  52  18  16.8  4.4  26 000  18 000
  2205 ETN9  25  52  18  16.8  4.4  26 000  18 000
  2305 E-2RS1TN9  25  62  24  19  5.4  22 000  7 500
  2305 ETN9  25  62  24  27  7.1  22 000  15 000
  2305 M  25  62  24  24.2  6.55  22 000  16 000
  11206 TN9  30  62  48  15.6  4.65
  6 700
  1206 EKTN9  30  62  16  15.6  4.65  24 000  15 000
  1206 EM  30  62  16  15.6  4.65  24 000  15 000
  1206 ETN9  30  62  16  15.6  4.65  24 000  15 000
  1306 EKTN9  30  72  19  22.5  6.8  19 000  13 000
  1306 ETN9  30  72  19  22.5  6.8  19 000  13 000
  2206 E-2RS1KTN9  30  62  20  15.6  4.65  22 000  7 500
  2206 E-2RS1TN9  30  62  20  15.6  4.65  22 000  7 500
  2206 EKTN9  30  62  20  23.8  6.7  22 000  15 000
  2206 ETN9  30  62  20  23.8  6.7  22 000  15 000
  2306  30  72  27  31.2  8.8  18 000  13 000
  2306 E-2RS1KTN9  30  72  27  22.5  6.8  18 000  6 700
  2306 E-2RS1TN9  30  72  27  22.5  6.8  18 000  6 700
  2306 K  30  72  27  31.2  8.8  18 000  13 000
  2306 M  30  72  27  31.2  8.8  18 000  13 000
  11207 TN9  35  72  52  19  6
  5 600
  1207 EKTN9  35  72  17  19  6  20 000  13 000
  1207 EM  35  72  17  19  6  20 000  13 000
  1207 ETN9  35  72  17  19  6  20 000  13 000
  1307 EKTN9  35  80  21  26.5  8.5  16 000  11 000
  1307 ETN9  35  80  21  26.5  8.5  16 000  11 000
  2207 E-2RS1KTN9  35  72  23  19  6  18 000  6 300
  2207 E-2RS1TN9  35  72  23  19  6  18 000  6 300
  2207 EKTN9  35  72  23  30.2  8.8  18 000  12 000
  2207 ETN9  35  72  23  30.2  8.8  18 000  12 000
  2307 E-2RS1KTN9  35  80  31  26.5  8.5  15 000  5 600
  2307 E-2RS1TN9  35  80  31  26.5  8.5  15 000  5 600
  2307 EKM  35  80  31  39.7  11.2  16 000  12 000
  2307 EKTN9  35  80  31  39.7  11.2  16 000  12 000
  2307 EM  35  80  31  39.7  11.2  16 000  12 000
  2307 ETN9  35  80  31  39.7  11.2  16 000  12 000
  11208 TN9  40  80  56  19  6.55
  5 000
  1208 EKTN9  40  80  18  19.9  6.95  18 000  11 000
  1208 ETN9  40  80  18  19.9  6.95  18 000  11 000
  1308 EKTN9  40  90  23  33.8  11.2  14 000  9 500
  1308 EM  40  90  23  33.8  11.2  14 000  9 500
  1308 ETN9  40  90  23  33.8  11.2  14 000  9 500
  2208 E-2RS1KTN9  40  80  23  19.9  6.95  16 000  5 600
  2208 E-2RS1TN9  40  80  23  19.9  6.95  16 000  5 600
  2208 EKTN9  40  80  23  31.9  10  16 000  11 000
  2208 ETN9  40  80  23  31.9  10  16 000  11 000
  2308 E-2RS1KTN9  40  90  33  33.8  11.2  13 000  4 800
  2308 E-2RS1TN9  40  90  33  33.8  11.2  13 000  4 800
  2308 EKTN9  40  90  33  54  16  14 000  10 000
  2308 EM  40  90  33  54  16  14 000  10 000
  2308 ETN9  40  90  33  54  16  14 000  10 000
  11209 TN9  45  85  58  22.9  7.8
  4 500
  1209 EKTN9  45  85  19  22.9  7.8  17 000  11 000
  1209 ETN9  45  85  19  22.9  7.8  17 000  11 000
  1309 EKTN9  45  100  25  39  13.4  12 000  8 500
  1309 ETN9  45  100  25  39  13.4  12 000  8 500
  2209 E-2RS1KTN9  45  85  23  22.9  7.8  15 000  5 300
  2209 E-2RS1TN9  45  85  23  22.9  7.8  15 000  5 300
  2209 EKTN9  45  85  23  32.5  10.6  15 000  10 000
  2209 ETN9  45  85  23  32.5  10.6  15 000  10 000
  2309 E-2RS1KTN9  45  100  36  39  13.4  12 000  4 300
  2309 E-2RS1TN9  45  100  36  39  13.4  12 000  4 300
  2309 EKTN9  45  100  36  63.7  19.3  13 000  9 000
  2309 EM  45  100  36  63.7  19.3  13 000  9 000
  2309 ETN9  45  100  36  63.7  19.3  13 000  9 000
  11210 TN9  50  90  58  26.5  9.15
  4 300
  1210 EKTN9  50  90  20  26.5  9.15  16 000  10 000
  1210 ETN9  50  90  20  26.5  9.15  16 000  10 000
  1310 EKTN9  50  110  27  43.6  14  12 000  8 000
  1310 ETN9  50  110  27  43.6  14  12 000  8 000
  2210 E-2RS1KTN9  50  90  23  22.9  8.15  14 000  4 800
  2210 E-2RS1TN9  50  90  23  22.9  8.15  14 000  4 800
  2210 EKTN9  50  90  23  33.8  11.2  14 000  9 500
  2210 ETN9  50  90  23  33.8  11.2  14 000  9 500
  2310  50  110  40  63.7  20  12 000  8 500
  2310 E-2RS1KTN9  50  110  40  43.6  14  11 000  4 000
  2310 E-2RS1TN9  50  110  40  43.6  14  11 000  4 000
  2310 K  50  110  40  63.7  20  12 000  8 500
  2310 M  50  110  40  63.7  20  12 000  8 500
  1211 EKTN9  55  100  21  27.6  10.6  14 000  9 000
  1211 ETN9  55  100  21  27.6  10.6  14 000  9 000
  1311 EKTN9  55  120  29  50.7  18  11 000  7 500
  1311 ETN9  55  120  29  50.7  18  11 000  7 500
  2211 E-2RS1KTN9  55  100  25  27.6  10.6  12 000  4 300
  2211 E-2RS1TN9  55  100  25  27.6  10.6  12 000  4 300
  2211 EKTN9  55  100  25  39  13.4  12 000  8 500
  2211 ETN9  55  100  25  39  13.4  12 000  8 500
  2311  55  120  43  76.1  24  11 000  7 500
  2311 K  55  120  43  76.1  24  11 000  7 500
  2311 KM  55  120  43  76.1  24  11 000  7 500
  2311 M  55  120  43  76.1  24  11 000  7 500
  11212 TN9  60  110  62  31.2  12.2
  3 400
  1212 EKTN9  60  110  22  31.2  12.2  12 000  8 000
  1212 ETN9  60  110  22  31.2  12.2  12 000  8 000
  1312 EKTN9  60  130  31  58.5  22  9 000  6 300
  1312 ETN9  60  130  31  58.5  22  9 000  6 300
  2212 E-2RS1TN9  60  110  28  31.2  12.2  11 000  3 800
  2212 EKTN9  60  110  28  48.8  17  11 000  8 000
  2212 ETN9  60  110  28  48.8  17  11 000  8 000
  2312  60  130  46  87.1  28.5  9 500  7 000
  2312 K  60  130  46  87.1  28.5  9 500  7 000
  2312 KM  60  130  46  87.1  28.5  9 500  7 000
  2312 M  60  130  46  87.1  28.5  9 500  7 000
  1213 EKTN9  65  120  23  35.1  14  11 000  7 000
  1213 ETN9  65  120  23  35.1  14  11 000  7 000
  1313 EKTN9  65  140  33  65  25.5  8 500  6 000
  1313 ETN9  65  140  33  65  25.5  8 500  6 000
  2213 E-2RS1KTN9  65  120  31  35.1  14  10 000  3 600
  2213 E-2RS1TN9  65  120  31  35.1  14  10 000  3 600
  2213 EKTN9  65  120  31  57.2  20  10 000  7 000
  2213 ETN9  65  120  31  57.2  20  10 000  7 000
  2313  65  140  48  95.6  32.5  9 000  6 300
  2313 K  65  140  48  95.6  32.5  9 000  6 300
  2313 M  65  140  48  95.6  32.5  9 000  6 300
  1214 ETN9  70  125  24  35.8  14.6  11 000  7 000
  1314  70  150  35  74.1  27.5  8 500  6 000
  2214  70  125  31  44.2  17  10 000  6 700
  2214 E-2RS1TN9  70  125  31  35.8  14.6  10 000  3 400
  2314  70  150  51  111  37.5  8 000  6 000
  2314 M  70  150  51  111  37.5  8 000  6 000
  1215  75  130  25  39  15.6  10 000  6 700
  1215 K  75  130  25  39  15.6  10 000  6 700
  1315  75  160  37  79.3  30  8 000  5 600
  1315 K  75  160  37  79.3  30  8 000  5 600
  2215 EKTN9  75  130  31  58.5  22  9 000  6 300
  2215 ETN9  75  130  31  58.5  22  9 000  6 300
  2315  75  160  55  124  43  7 500  5 600
  2315 K  75  160  55  124  43  7 500  5 600
  2315 KM  75  160  55  124  43  7 500  5 600
  2315 M  75  160  55  124  43  7 500  5 600
  1216  80  140  26  39.7  17  9 500  6 000
  1216 K  80  140  26  39.7  17  9 500  6 000
  1316  80  170  39  88.4  33.5  7 500  5 300
  1316 K  80  170  39  88.4  33.5  7 500  5 300
  2216 EKTN9  80  140  33  65  25.5  8 500  6 000
  2216 ETN9  80  140  33  65  25.5  8 500  6 000
  2316  80  170  58  135  49  7 000  5 300
  2316 K  80  170  58  135  49  7 000  5 300
  2316 KM  80  170  58  135  49  7 000  5 300
  2316 M  80  170  58  135  49  7 000  5 300
  1217  85  150  28  48.8  20.8  9 000  5 600
  1217 K  85  150  28  48.8  20.8  9 000  5 600
  1317  85  180  41  97.5  38  7 000  4 800
  1317 K  85  180  41  97.5  38  7 000  4 800
  2217  85  150  36  58.5  23.6  8 000  5 600
  2217 K  85  150  36  58.5  23.6  8 000  5 600
  2317 KM  85  180  60  140  51  6 700  4 800
  2317 M  85  180  60  140  51  6 700  4 800
  1218  90  160  30  57.2  23.6  8 500  5 300
  1218 K  90  160  30  57.2  23.6  8 500  5 300
  1318  90  190  43  117  44  6 700  4 500
  1318 K  90  190  43  117  44  6 700  4 500
  2218  90  160  40  70.2  28.5  7 500  5 300
  2218 K  90  160  40  70.2  28.5  7 500  5 300
  2218 KM  90  160  40  70.2  28.5  7 500  5 300
  2318 KM  90  190  64  151  57  6 300  4 500
  2318 M  90  190  64  151  57  6 300  4 500
  1219  95  170  32  63.7  27  8 000  5 000
  1219 K  95  170  32  63.7  27  8 000  5 000
  1319  95  200  45  133  51  6 300  4 300
  1319 K  95  200  45  133  51  6 300  4 300
  2219 KM  95  170  43  83.2  34.5  7 000  5 000
  2219 M  95  170  43  83.2  34.5  7 000  5 000
  2319 M  95  200  67  165  64  6 000  4 300
  1220  100  180  34  68.9  30  7 500  4 800
  1220 K  100  180  34  68.9  30  7 500  4 800
  1320  100  215  47  143  57  6 000  4 000
  1320 K  100  215  47  143  57  6 000  4 000
  1320 KM  100  215  47  143  57  6 000  4 000
  2220  100  180  46  97.5  40.5  6 700  4 800
  2220 K  100  180  46  97.5  40.5  6 700  4 800
  2220 KM  100  180  46  97.5  40.5  6 700  4 800
  2220 M  100  180  46  97.5  40.5  6 700  4 800
  2320 M  100  215  73  190  80  5 600  4 000
  1222  110  200  38  88.4  39  6 700  4 300
  1222 K  110  200  38  88.4  39  6 700  4 300
  1322 KM  110  240  50  163  72  5 300  3 600
  1322 M  110  240  50  163  72  5 300  3 600
  2222  110  200  53  124  52  6 000  4 300
  2222 K  110  200  53  124  52  6 000  4 300
  2222 KM  110  200  53  124  52  6 000  4 300
  2222 M  110  200  53  124  52  6 000  4 300
  1224 KM  120  215  42  119  53  6 300  4 000
  1224 M  120  215  42  119  53  6 300  4 000
  1226 KM  130  230  46  127  58.5  5 600  3 600
  1226 M  130  230  46  127  58.5  5 600  3 600
  13030  150  225  56  57.2  22.4  5 600  3 400
  13940  200  280  60  60.5  28  4 300  2 600
  13944  220  300  60  60.5  29  3 800  2 400
  13948  240  320  60  60.5  30.5  3 600  2 200



A Leading Industrial Bearings Supplier

Why Choose FV Bearings?

FV Bearing is a leading supplier of precision bearings and bearings related products across a large spectrum of customers – preimarily OEMs and major distributors.

Leading industrial ball bearings with best materials

Accurate response to client’s request

FV Bearings Co.Ltd has rich experiences in bearings manufacturing and processing, the professional bearing engineers can handle your requirements on bearings exactly and output the accurate bearing products.

World’s leading roller bearings manufacturer

FV Bearings is a leading roller bearings manufacturer provides high quality and durable roller bearings for different industries such as automotive, aerospace, machinery, power plants, chemistry industry, agriculture and other fields.

Solutions for special bearings and high end bearings

If you are looking for special bearings and high end bearings, FV bearings can help you to customize any special bearings according to your needs based on advanced bearings manufacturing technology.

Send us an Email for Quote

sales@fv-bearing.com