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Bearings for Medical Application 

MMB stocks a wide assortment of bearings designed to the demanding applications of the medical industry, including surgical and dental tools, diagnostic and laboratory equipment, pumps and much more.

When choosing bearings for medical devices & medical applications, several factors should be considered including speed, low noise, service life, and resistance to harsh environments, aggressive chemicals, or fluids. As a stocking distributor of NMB precision miniature ball bearings, we have thousands of bearings ready to ship to you.

MMB Bearing Medical Application

Materials used for medical instruments bearings include:

  • AISI 440C
  • Nitrogen enhanced stainless steel
  • Ceramic materials
  • Stainless Steel 300 series
  • 52100 Bearings steel
  • Instrument Miniature Ball Bearings- Although these are two different categories, they are generally the same. The miniature bearing must fall within a specific size to qualify as a miniature bearing. The instrument bearing does not have to fall within a specific size range but covers a lot of the miniature bearings. The instrument bearings must be ABEC 5 or greater and have specific characteristics that miniature bearings are not required to have. These include having uniform running torque, smooth operation and limits on the amount of vibration, a definite contact angle or preload (or both), and these are required to have very high cleanliness standards.
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Our Supply

Brands- NMB (authorized distributor), Timken Super Precision (authorized distributor), NHB, GRW, among others

Bearing Types-

SS (stainless steel), DD (52100 steel), flanged or non-flanged, extended inner ring

These cover bearing come as small as 1mm ID to as large as 10mm ID

Radial Ball Bearings- Radial ball bearings perform well in dirty environments and need very little service. These bearings are very useful high-speed applications. MMB stocks several clearance options (C0-C5), rubber sealed(2RS), metal shielded (ZZ), and open types of these bearings. These can come with a standard set of balls or a max-type set. There are many different options of grease that MMB can provide for these bearings.

Bearing Types-

6000, 6200, 6300, metric series

5000 series- double row metric series

R series- inch sizes

6800-6900 (also numbered as 61800 and 61900) metric series

Needle Roller Bearings- Needle rollers are generally open on the inside and have a solid cage on the outside. They can come with an inner ring. An overview of needle bearings includes standard full complement and caged needle bearings, cam followers, and roller followers to name a few. This type of bearing handles high loads very well and can withstand oscillation with greater rigidity. These come in a variety of sizes and are available in chrome, stainless steel, or black oxide material.

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Over 100 years of combined experience 


MMB Bearings is one of the nation’s largest stocking distributors and suppliers of high-quality ball and roller bearings, including miniature stainless steel bearings. We have been in business for over 40 years and are an ISO 9001:2015 certified stocking distributor. With millions of dollars of cost inventory that is stocked in a climate controlled warehouse, we are ready to fulfill all your bearing needs. We offer the top brands in the industry, including NMB, Schaeffler (Barden, FAG, INA) GRW, NHBB, EZO, and Timken, and have a bearing solution for virtually every application.

We also over white room cleaning services, including cleaning, relubrication, repackaging, labeling, and kit services to help extend the service life of your bearings. We also offer custom lubrication services to help you find the right lubricant for such applications as clean-room, high temperature, food and beverage processing, medical, and low torque.

Our helpful staff is here to support you with over 100 years of combined bearing experience and knowledge. We also offer expedited and same-day shipping upon request. At MMB Bearings, we are ready to be your supply chain provider and one‑stop source for all of your bearing requirements.