Case Study #1001


Dry Ice Machine

Type of Bearing Used:

50 mm bore Single Row Radial Ball Bearing with 2 buna seals


Bearings were rusting prematurely. Bearing steel used, 52100. Typically, getting a bearing in a larger size that is 440 stainless steel becomes very expensive. Also, longer lead-times generally will apply, as most manufacturers tend not to carry heavy inventory in larger bore sizes.


Offer the customer an alternative utilizing standard 52100 chrome steel bearings. Implemented a coating process of iron nitride, followed by a final sealant added to the bearings. Process was put on a finished bearing, no additional grinding took place. It transformed the bearing into a product with excellent resistance to corrosion. Also has increased wear properties on the bearing

Materials typically not able to receive the iron nitride coating process are: bronze, copper, aluminum and nickel. Products that are made from: carbon steel, stainless steel or tool steel can receive the process.

Ritbearing can provide samples for approval prior to order placement depending upon the size of the job. Once approved, a blanket order can be placed and inventory can be held for just in time delivery.

Please call your local Ritbearing representative for more information regarding your application.

Image of chrome steel bearings being used for a dry ice machine