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ISO 9001:2000 Certified Quality Management System

More About PKB High Speed Bearings

Ultra High Speed Bearing Design

PACAMOR KUBAR BEARINGS (PKB) manufactures ultra high speed ball bearings at our quality certified factory in Troy, NY. Pacamor Kubar Bearings (PKB) bearings for high speed applications offer long life at speeds approaching 500K RPM and will withstand repeated autoclaving. All high speed instrument bearings are manufactured from 440C stainless steel, the preferred choice for all our instrument bearings. Its corrosion resistance allows for repeated sterilizing. Its highly finished, honed surface provides a long lasting structure for the 440C or Silicon Nitride (ceramic) balls, which allows the bearing to rotate smoothly at high speeds. Oils and greases designed for high speeds and temperatures play a key role in the performance of any high speed bearing.

For high speed applications, bearing noise, vibration, and life are all important factors which are heavily affected by both the bearing design and the intricate details of the bearing production process. To meet the unique challenges encountered by ultra high speed ball bearings in speeds approaching 500,000 RPM, PKB offers a variety of machined retainers to provide lubricity, lower thermal expansion, resistance to high temperatures, and autoclavability.

High speed ball bearings, that run at speeds approaching 500K RPM, require special consideration. Excessive heat and vibration can cause premature bearing failure of the bearing. This risk is elevated as the ball bearing speed is increased. To ensure smooth and quiet running bearings, PKB performs special processing on the internal mating surfaces of the ball bearing components. In addition to the extra care involved in manufacturing the components, the assembly process includes a tightened radial play to ensure that each high speed ball bearing contains the same internal geometries as the next. Bores can be specially coded to ensure a consistent and reliable bearing fit on mating components.

Shaft diameter is an important consideration for high speed bearings. The internal components are matched with a specifically calibrated amount of radial play to ensure maximum ball bearing life. If the ball bearing is pressed onto the shaft too tightly, the radial play can be compromised and even eliminated, resulting is overheating and premature failure of the high speed bearing. If the ball bearing is pressed onto the shaft askew, the ball bearing will not run concentrically which can cause warping and failure of the high speed bearing.

In addition to selecting the right bearing retainer for your miniature and instrument bearing application, hybrid bearings can prevent component welding and extend the life of the ultra high speed bearing in a variety of applications. To this end, we offer standard 400C stainless steel with ceramic balls in our bearing assemblies. PACAMOR KUBAR BEARINGS high speed bearings are available with up to ABEC 9 tolerances (as defined by the American Bearing Manufacturers' Association) with an optional flanged outer ring.

high speed bearings


PACAMOR KUBAR BEARINGS miniature and instrument ball bearings are built to the highest manufacturing standards with specific characteristics developed for demanding applications. To assist with your selection of ultra high speed bearings, please contact us and we'll be happy to help you. For further assistance with bearing selection and design, please feel free to contact our engineering team, look at our online catalog right now!

Domestic Manufacturing

PACAMOR KUBAR BEARINGS ISO 9001:2008, AS9100:2009 and FAA TSO-C149, Aircraft Bearings Certified manufacturing facility, located in Troy, New York, is proudly an American owned and operated company. PACAMOR KUBAR BEARINGS is able to meet all DFARS domestic manufacturing requirements for applications relating to military and defense contracts. From the steel used to manufacture the bearing rings, to the many choices of retainer materials, balls, and bearing closures, our vendors must meet our unrelenting demand for reliable high quality in every miniature and instrument ball bearing that carries the PACAMOR KUBAR BEARINGS name. You can be certain, whether our precision instrument bearing is a single component in an oil well drilling device or the miniature bearing in your fishing reel, the PACAMOR KUBAR BEARINGS name is one you can trust.

Ball Bearing Lubrication

Miniature and instrument ball bearings are supplied ready for use, complete with your choice of lubricant, including food-safe and moisture-resistant grease. Optional shields prevent the introduction of contamination during operation while permitting the bearing to be re-lubricated during machine maintenance.

Custom Products

PACAMOR KUBAR BEARINGS has options to satisfy any miniature and instrument ball bearing requirement. Technical expertise is available to assist with design engineering for custom products. Available options include, but are not limited to, custom rings, retainers, shields, lubricants, and packaging. PACAMOR KUBAR BEARINGS offers the right bearing at the right price for all your precision miniature and instrument applications.