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Self-aligning Ball Bearings

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Bearing Overview

Self-aligning ball bearings are designed to compensate for shaft misalignment caused by installation errors, shaft deflection, or housing deformation. Their unique structure features two rows of balls running in a common spherical outer raceway, which allows the inner ring to automatically adjust its position relative to the outer ring, ensuring smooth operation even under misalignment conditions.

These bearings are particularly suitable for applications where alignment accuracy is difficult to maintain or where shafts are subject to bending under load. They offer low friction, stable running performance, and reduced maintenance requirements, making them a cost-effective solution for many light to medium-duty industrial systems.

Self-aligning ball bearings are widely used in agricultural machinery, textile equipment, conveyor systems, and general industrial machinery, where reliable performance and tolerance to misalignment are essential.

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Key Features

  • Self-aligning capability compensates for shaft misalignment
  • Two-row ball design for improved load distribution
  • Low friction and smooth operation
  • Suitable for moderate radial loads
  • Reduced sensitivity to installation errors
  • Available in cylindrical and tapered bore options
  • Long service life with low maintenance requirements
  • Widely applicable in light and medium-duty machinery

Bearing Types

Self-aligning ball bearings are available in several standard series to meet different load and size requirements:

  • 1200 Series (Light-duty self-aligning ball bearings)
  • 1300 Series (Medium load capacity)
  • 2200 Series (Enhanced load capacity, compact design)
  • 2300 Series (Heavy-duty self-aligning ball bearings)

Bore Types

  • Cylindrical bore: Standard fit design
  • Tapered bore: 1200K / 1300K / 2200K / 2300K (for adapter sleeve mounting)
  • UK Series: Adapter sleeve mounted self-aligning bearings

… Many other bearing models and series are not listed here. If you have any specific requirements or questions, feel free to contact us.

Applications

Self-aligning ball bearings are widely used in machinery systems where shaft misalignment is unavoidable or frequent.

  • Agricultural machinery
  • Textile machinery
  • Conveyors and material handling systems
  • Light industrial equipment
  • Fans and blowers
  • Packaging machinery
  • Printing machinery
  • Food processing equipment
  • HVAC systems
  • General mechanical equipment

Technical Specifications

ItemAvailable Options
StructureSelf-Aligning Ball Bearing
Series1200 / 1300 / 2200 / 2300
Bore TypeCylindrical / Tapered
Mounting TypeDirect Fit / Adapter Sleeve (UK series)
ClearanceCN / C3 / C4
Cage MaterialSteel / Brass
SealingOpen Type / Sealed Type (optional)
LubricationGrease or Oil
MaterialHigh Carbon Chrome Bearing Steel

Dimensions Table

Please refer to the table below for detailed dimensions and specifications of each series and model.

Many additional bearing models and customized solutions are available. If you have specific requirements, please feel free to contact us for technical support and selection guidance.

Model NO. Dimensions(mm) Model NO. Dimensions(mm)
1200 10*30*9 1210 50*90*20
1201 12*32*10 1211 55*100*21
1202 15*35*11 1212 60*110*22
1203 17*40*12 1213 65*120*23
1204 20*47*14 1214 70*125*24
1205 25*52*15 1215 75*130*25
1206 30*62*16 1216 80*140*26
1207 35*72*17 1217 85*150*28
1208 40*80*18 1218 90*160*30
1209 45*85*19 1219 95*170*32
1220 100*180*34
1221 105*190*36
1222 110*200*38
1224 120*215*42
1226 130*230*46
1228 140*250*50
Model NO. Dimensions(mm) Model NO. Dimensions(mm)
1300 10*35*11 1310 50*110*27
1301 12*37*12 1311 55*120*29
1302 15*42*13 1312 60*130*31
1303 17*47*14 1313 65*140*33
1304 20*52*15 1314 70*150*35
1305 25*62*17 1315 75*160*37
1306 30*72*19 1316 80*170*39
1307 35*80*21 1317 85*180*41
1308 40*90*23 1318 90*190*43
1309 45*100*25 1319 95*200*45
1320 100*215*47
1321 105*225*49
1322 110*240*50
Model NO. Dimensions(mm) Model NO. Dimensions(mm)
2200 10*30*14 2210 50*90*23
2201 12*32*14 2211 55*100*25
2202 15*35*14 2212 60*110*28
2203 17*40*16 2213 65*120*31
2204 20*47*18 2214 70*125*31
2205 25*52*18 2215 75*130*31
2206 30*62*20 2216 80*140*33
2207 35*72*23 2217 85*150*36
2208 40*80*23 2218 90*160*40
2209 45*85*23 2219 95*170*43
2220 100*180*46
2221 105*190*50
2222 110*200*53
Model NO. Dimensions(mm) Model NO. Dimensions(mm)
2300 10*35*17 2310 50*110*40
2301 12*37*17 2311 55*120*43
2302 15*42*17 2312 60*130*46
2303 17*47*19 2313 65*140*48
2304 20*52*21 2314 70*150*51
2305 25*62*24 2315 75*160*55
2306 30*72*27 2316 80*170*58
2307 35*80*31 2317 85*180*60
2308 40*90*33 2318 90*190*64
2309 45*100*36 2319 95*200*67
2320 100*215*73
2321 105*225*77
2322 110*240*80

Q & A

What are self-aligning ball bearings used for?

Self-aligning ball bearings are used to accommodate shaft misalignment in applications where perfect alignment cannot be guaranteed. They are commonly used in agricultural machinery, textile equipment, and conveyor systems.

How do self-aligning ball bearings work?

They use two rows of balls running in a spherical outer ring, which allows the inner ring to automatically adjust its position and compensate for misalignment during operation.

What is the difference between 1200, 1300, 2200, and 2300 series?

The main difference is load capacity and design strength. 1200 series is light-duty, 1300 is medium-duty, 2200 is compact with higher capacity, and 2300 is heavy-duty.

What is the advantage of tapered bore self-aligning bearings?

Tapered bore bearings allow easy mounting using adapter sleeves and provide better fit adjustment, making installation more flexible and secure.

Can self-aligning ball bearings handle heavy loads?

They are mainly designed for moderate radial loads. For heavy radial or combined loads, other bearing types such as spherical roller bearings may be more suitable.

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