RotoPrecision Miniature and Instrument Bearings


RotoPrecision has supplied the needs of the high tech and defense sector with precision ball bearings for over 50 years. We offer a full range of precision miniature and instrument grade ball bearings from stock available in both inch and metric sizes from ABEC 3 to ABEC 7 precision grades. Special requirements can be fully supported by in-house technical staff.


Specify RotoPrecision miniature and instrument bearings will full confidence that:

  1. RotoPrecision remains current in the latest manufacturing and design advances using only  manufacturers who meet exacting selection criteria. You will always receive miniature bearings manufactured to the highest standards available in the world today.
  2. RotoPrecision bearings are lubricated under Class 100 clean conditions and then individually packaged in hermetically sealed cellophane or foil pouches. We do not stock product in bulk vials and re-package when you order. That’s why we can confidently guarantee the cleanliness and performance of our precision bearing products.
  3. RotoPrecision bearings are labeled with an intuitive part numbering system (metric series), which is descriptive of the OD, ID and Width of the bearing. No other supplier offers as complete a numbering system in as few characters, making the tasks of managing your ordering and inventory easier.
  4. RotoPrecision offers complete purchase order or lot traceability back to raw materials upon request through our ISO certified quality processes, guaranteeing product integrity and full failure analysis capability. 

Product Range (Click a row for detailed specifications)

Product Range
Open Metric 1.0 mm to 3.0 mm
Open Metric 4.0 mm to 6.0 mm
Open Metric 7.0 mm to 10.0mm
Open Inch 0.0400" to .7500"
Open Flanged Metric 1.0 mm to 3.0 mm
Open Flanged Metric 4.0 mm to 5.0 mm
Open Flanged Metric 6.0 mm to 10.0mm
Open Flanged Inch 0.0400" to .5000"
Shielded Metric 1.0 mm to 3.0 mm
Shielded Metric 4.0 mm to 5.0 mm
Shielded Metric 6.0 mm to 10.0mm
Shielded Inch 0.0469" to .5000"
Shielded Flanged Metric 1.5 mm to 3.0 mm
Shielded Flanged Metric 4.0 mm to 5.0 mm
Shielded Flanged Metric 6.0 mm to 10.0mm
Shielded Flanged Inch 0.0469" to .5000"

For any additional information or for immediate assistance,
please contact Application Support.

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Application Support: 1-888-712-3400

Application Support:  1-888-712-3400
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