Miniature Angular Contact Bearings

Miniature Angular Contact BearingsMiniature Angular Contact Bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance.

Part Number BORE d O.D. D WIDTH B LAND DIAMETER FILLET RADIUS r BALL COMLEMENT LOAD RATINGS** LBS.
INCH (mm) INCH (mm) INCH (mm) Li Lo NO. Z SIZE Db DYN. C STATIC CO
 SSMDR-620MC  .0787  2.000  .2362  6.000  .0906  2.301  .124  .186  .003  7  .0394  29  10
 SSMBRI-5SD502  .0937  2.380  .3125  7.938  .1094  2.779  .157  .246  .005  6  1/16  60  2
  MBRI-5SD507  .0937  2.380  .3125  7.938  .1094  2.779  .157  .246  .005  6  1/16  60  22
 SSMDRI-418X  .1250  3.175  .2500  6.350  .0937  2.380  .166  .220  .003 8  .0394  33  12
 SSMDRI-418ZWO5MC  .1250  3.175  .2500  6.350  .1094  2.779  .166  .220  .003  7  .0394  33  12
 SSMBR-2  .1250  3.175  .3750  9.525  .1562  3.967  .205  .292  .012  7  1/16  66  26
 SSMEL-740SD503MC  .1250 3.175  .2756  7.000  .0787  2.000  .189  .232  .003  9  .0394  23  9
 SSMDL-740MC  .1575  4.000  .2756  7.000  .0787  2.000  .189  .232  .003  7  1/32  19  7
 MBR-1640SD509  .1575 4.000  .6299  16.000  .1969  5.000  .300  .596  .016  6  1/8  200  85
 MBR-3SD511  .1875  4.763  .5000  12.700  .1562  3.967  .276  .412  .012  8  3/32  159  70
 MER-3SD509  .1875  4.763  .5000  12.700  .1562  3.967  .276  .412  .012  8  3/32  152  67
 SSMER-3SD509  .1875  4.763  .5000  12.700  .1562  3.967  .276  .412  .012  8  3/32  152  67
 MER-1650SD505  .1969  5.000  .6299  16.000  .1969  5.000  .308  .478  .016  6  1/8  200  85
 MER-1960  .2362  6.000  .7480  19.000  .2362  6.000  .383  .596  .016  6  5/32  338  154
 SSMBR-4  .2500  6.350  .6250  15.875  .1960  4.978  .375  .502  .012  8  3/32  159  70
 SSMER-4SD504  .2500  6.350  .6250  15.875  .1960  4.978  .375  .502  .012  9 3/32  172  79
 SSMDR-4ZSD501  .2500  6.350  .6250  15.875  .1960  4.978  .375  .522  .012  8  1/8  381  194
 MER-2280SD503  .3150  8.000  .8661  22.000  .2756  7.000  .478  .690  .016  9  5/32  640  375
 SSMER-2280SD502  .3150  8.000  .8661  22.000  .2756  7.000  .478  .690  .016  9  5/32  640  375
SSMER-2490 .3543  9.000  .9449 24.000 .2756 7.000 .559 .772 .016 10 5/32 663 376
 SSMER-2690 .3543 9.000 1.0236 26.000 .3150 8.000 .583 .836 .016 9 3/16 903 505
 SSMBRI-1438 .3750 9.525 .8750 22.225 .2188 5.558 .520 .742 .016 7 5/32 569 273
SSMERI-1438 .3750 9.525 .8750 22.225 .2188 5.558 .520 .731 .016 9 5/32 671 351
 SSMERI-1878SD502 .8750 22.225 1.1250 28.575 .1562 3.967 1.041 .970 .010 32 1/16 186 170

Design Attributes

Specific geometry of angular contact bearing raceways and shoulders creates ball contact angles that support higher axial loads.
Expanded options include special lubricants, cage materials, preloads and coatings for additional corrosion resistance.

Applications

Angular contact ball bearings are engineered for use in high-speed, high precision applications for:

  1. Agriculture
  2. Chemical
  3. General industry
  4. Utilities

Where are Miniature Angular Contact Bearings being used?

The miniature angular contact bearing is the bearing that can withstand both radial and axial loads. With the increasing requirements of mechanical equipment, the stability of miniature angular contact bearings is also put forward, and in actual use, there will be no failure.

The speed of the miniature angular contact bearing can reach tens of thousands of revolutions per minute. As the output power of the micro angular contact bearing increases and the requirements for increasing the rotational speed become higher and higher, the efficiency of the bearing needs to be increased. The accuracy of miniature angular contact bearings is also divided into five levels, with different accuracy levels with different tolerances and rotational accuracy requirements.

The selection of correct preload and clearance of the bearings is important for operational reliability. If the bearing clearance is too large during operation, the load capacity cannot be fully utilized. In the case of miniature angular contact bearings, the contact between the inner and outer rings of the cage and the balls varies, which also has a great influence on the natural frequency of the bearings. Miniature angular contact bearings are generally greased or oil lubricated. When using grease lubrication, be sure to use high-performance greases such as oxidation, rust and extreme pressure.

Due to the high limit rotation speed of the miniature angular contact bearing, it can be used well in machine tools, high-frequency motors, centrifugal separators, oil pumps, air compressors, etc.

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