Stainless Steel Flanged Miniature Bearings

Stainless steel flanged miniature bearings for shaft sizes from 1mm to 9mm
See product table below for dimensions and technical drawings
See Products Variants below for chrome steel and non-flanged options

Stainless steel flanged miniature bearings have a solid steel flange on the outer ring. This allows the bearing to be more easily located in a housing. The flange can also help to prevent axial movement of the bearing in the event of a thrust load on the bearing. It is easier to maintain the position of a flanged bearing in the housing where a lot of vibration is present. Flanged bearings are sometimes used where the housing is made from a different material and may expand more than the bearing outer ring at higher temperatures. The resulting loose fit may allow a non-flanged bearing to move within the housing.

EZO flanged stainless steel instrument bearings are made from KS440 stainless steel, also known as ACD34 or X65Cr13. This grade of stainless steel has a greater load capacity than AISI-440C grade and better low noise qualities. It is also has better corrosion resistance. Chrome steel flanged miniature bearings can be found on the flanged miniature bearing page (see Products Variants).

These bearings, with a stainless steel retainer and a suitable high temperature lubricant, can be used at temperatures of 250°C constant or up to 300°C intermittent. Above these temperatures, the load capacity of stainless steel is reduced.

Our flanged stainless steel bearings are suitable for use in mildly corrosive environments as the steel is corrosion resistant but it is affected by seawater and stronger acids or alkalis. Marine grade stainless steel bearings, plastic bearings or full ceramic bearings should be used in very corrosive environments. Stainless steel bearings do not need preservative oil on the exterior surfaces so they can be used without lubrication (dry).

Most of these flanged stainless steel miniature bearings can be supplied open or with AISI-304 stainless steel shields. The smallest sizes are only available open. The larger sizes may be available with rubber or Teflon contact seals or low friction non-contact rubber seals. The open bearings are normally oil lubricated. Shielded or sealed bearings are generally pre-lubricated with grease but shielded bearings can also be supplied with instrument oil for low torque applications or completely dry for very low speed applications where very low rotational resistance is required. Thanks to our in-house lubrication facility, these bearings can be offered with customer specified oils, greases or dry lubricants.

The standard cage or retainer for a stainless steel flanged miniature bearing is made from either AISI-304 or AISI-420 stainless steel. A one-piece crown cage is more common for the very small and the very thin section bearings due to space constraints. Larger sizes have a two piece ribbon cage.

Click on INFO in the rows below to display technical drawings of the bearings with load and speed data. The load ratings shown are for AISI-440C flanged bearings. Load ratings are higher for EZO KS440 bearings. Please note that the maximum loads and speeds are used in theoretical life calculations. It is recommended to use bearings at significantly less than the maximum load and speed ratings to ensure reasonable bearing life.