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Precision Bearings

Precision Bearings

Precision bearings have a higher than standard precision level. Precision ball bearings conform to ABEC-1 and ABEC-3 tolerances to meet demanding application requirements while high precision ball bearings must adhere to ABEC-5, ABEC-7, or ABEC-9 tolerances.  ABEC-1-3 tolerance range is where most general-purpose ball and rollers are used for most applications. ABEC-5-9 is where there are elevated demands in terms of axial and radial run out. The frequent purpose of these bearings is to reduce friction as well as support radial and axial loads. The following are some key considerations and benefits of precision bearings:

  • Optimum design
  • Long life
  • High accuracy
  • Low noise
  • Range of cage material options
  • High rotational speed
  • Low friction
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The size and width of these bearings vary according to their use and application. For applications that will require and operate with high speeds and tight precision, it is key to use a high precision bearing. Precision bearings are designed to meet demanding needs of special applications that incorporate high accuracy, high rigidity, and high speeds. These bearings minimize heat generation, noise, and vibration. The optimal materials and internal design give these bearings the highest level of accuracy. To ensure all benefits of precision bearings it is vital that shafts and housings are correctly and precisely mated. These bearings are often used in metal cutting and woodworking machinery spindles, vacuum pumps, precision ball screws, printing machinery, medical devices, aerospace, high speed rolling mills, and high speed turbochargers.

As a major ball bearing distributor, MMB Bearings offers a wide variety of ball bearings to suit virtually any application.  MMB Bearings stocks the following brands of precision bearings:

Brands Available

Precision Ball Bearing Brand Specifications logos

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Over 100 years of combined experience

About MMB Bearings

MMB Bearings has grown from a small supplier of precision miniature bearings, to one of the nation’s largest stocking distributors and suppliers of high-quality ball and roller bearings. Our bearings are stocked in a climate controlled warehouse to ensure our inventory maintains high quality standards. We take great pride in the knowledge and service we provide. You'll find precisely what you need from one source with ready-to-ship inventory in large quantities of domestic and imported ball, roller, needle and rod end bearings.

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