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Bearings • Miniature Bearings

Miniature ball bearings are machined components constructed from an outer race, inner race, balls, retainers, shields, and snap rings. Because rolling balls have a lower coefficient of friction than do two flat surfaces that rotate on each other, these bearings reduce rotational friction while still supporting radial and axial loads. Due to limited contact area between the balls and races, however, miniature ball bearings have a proportionally lower load capacity compared to other rolling-element bearings.Miniature bearings are produced in a variety of configurations, including open, shielded, or sealed, with or without lubrication, and bore diameter sizes as small as 0.6 mm. They can be used in fractional horsepower motors, domestic appliances, precision instruments, tape recorders, and other similar devices.Leading manufacturers: VXB, Boca Bearings, Dynaroll, NMB Tech, Shanhai Lily, SMB, TOK Bearing Co., Ltd.

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  • Dynaroll Corp.

    Dynaroll is a manufacturer of metric precision miniature ball bearings with bore sizes ranging from 1mm to 9mm / OD from 3mm to 7mm are available.  Types of miniature bearings include standard and flanged open, and standard and flanged shielded.

  • National Precision Bearing

    National is a manufacturer of miniature bearings in inch, metric, specialty and dental designs.  The inch series miniature bearings are single row ball types available from .0400 through .7500 inch bore sizes.  The metric series are available from 1 mm to 10 mm bore sizes. Specialty miniature bearings include angular contact, modified dimensions and high-speed medical and dental designs. They are available in stainless steel and come in both open and shielded configurations.

  • MMB Bearing Co., Inc.

    MMB is a manufacturer of a wide variety of micro miniature bearings in inch and metric sizes. They also carry a wide selection of other types, including aircraft, airframe, angular contact, cam followers, double row, flanged, needle and spindle bearings.

  • Impact Bearing

    Impact is a manufacturer of a metric series of miniature bearings.  These are are single row ball designs and are available from 1 mm to 10-mm bore sizes. The construction of these products enables them to carry moderate radial and thrust loads at low operating torque and provide high performance. Their metric series miniature ball bearings are available in stainless steel and chrome steel, and come in open sealed and shielded configurations.

  • The Timken Company

    Timken is a manufacturer of miniature and instrument ball bearings, including high speed dental designs. Timken miniature and instrument ball bearings include radial retainer, high speed radial, thrust, pivot, angular contact and full ball complement types. Features include extended inner rings and flanged outer rings, shields and seals, radial play and contact angle variations, various ball retainer styles and materials, and exacting tolerance levels.

  • NTN Bearing Corp. of America

    NTN is a manufacturer of micro and miniature ball bearings made of high carbon chrome steel and stainless steel.  Sizes range from 1 mm inside diameter to 26 mm OD's, and from 0.0400" ID to 0.8750" OD, in various widths.

  • PIB Bearing, Inc.

    Pacific is a manufacturer of a complete line of miniature bearings with a variety of seal, retainer and material options.  Products are available in stainless steel, chrome and Chromex 40, which is a highly-alloyed steel with increased resistance to fatigue and corrosion.

  • VXB Ball Bearings

    VXB is a manufacturer of metric and inch miniature ball bearings.  Bore sizes range from 1mm to over 32mm inner diameter. These products are typically used in fishing reel, miniature RC, and miniature slot car applications among others, and are offered in chrome, carbon or stainless steel.

  • SMB Bearings

    SMB is a manufacturer of miniature inch bearings for shaft sizes of 0.04" to 1.00" in chrome and stainless steel.  Products are available in open, shielded or sealed configurations.

  • Alpine Bearing Co.

    Alpine is a bearing supplier to distributors and OEMs. Offerings include miniature, spindle, stainless, angular contact and ball screw support bearings. All products come in light, medium and extra small series. They carry Barden, FAG, GMN, IJK, JAF, Nachi, NHBB, NMB, NTN, RBC, SKF, SMT, SNFA, TIP and WTW brands.

  • NMB Technologies

    NMB is a manufacturer of miniature precision ball bearings. These machined components include an outer and inner ring, balls, retainers, shields and snap rings.  Products are available in inch and metric sizes, open or shielded, and flanged or unflanged.

  • RotoPrecision Inc

    RotoPrecision is a manufacturer of miniature and instrument bearings available in inch and metric sizes for the high tech and defense industries.

  • USA Bearings & Belts

    USA Bearings manufactures miniature ball bearings in 7mm sizes. The 607 ZZ  has two non-contact metal shields one on each side of the ball bearing. If your application requires a 607 ball bearing with only one seal or one shield you can purchase the 607 ZZ and take one of the shields or seals off.

  • Pioneer Bearing

    Pioneer Bearing stocks a wide variety of inch and metric miniature bearings in both chrome and stainless steel, and in all configurations. Other bearings offered include aircraft and industrial designs.