NTN ASS208-109N insert bearing

NTN ASS208-109N belongs to insert bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for ASS208-109N and any equivalents.

The NTN ASS2 series is an insert bearing built around a ball bearing with a spherical outer ring and an extended inner ring, made to sit inside split or solid housings. Conveyors, fans and agricultural equipment are typical places where this design is used, since it combines smooth running with self-alignment. MR Industrial Accessories supplies this series to maintenance and purchasing teams across the United States and Latin America. If you are replacing an insert already in service, send the part number through WhatsApp or email and the team will prepare a quote.

Reading the code helps you order the right insert the first time. The letters ASS identify an insert bearing with a spherical outer ring and an extended inner ring. The digits that follow, such as 201, 202, 203 or 204, set the bore size within the metric series. When a hyphen and three digits appear, as in ASS201-008N, those digits give the bore in inches, so 008 equals 1/2". A trailing N means the outer ring carries a snap ring groove. Codes such as ASS201N, ASS202-009N and ASS204-012N follow this pattern.

Food and beverage plants, material handling operations, agriculture and water treatment all rely on this type of insert. It shows up in conveyors, mixers, grain elevators, fans and process equipment. The spherical outer ring lets the bearing align itself inside the housing, which absorbs minor mounting error or shaft deflection. Because the inner ring extends further than usual, mounting and sealing on the shaft are easier.

Choosing the right insert starts with the shaft diameter, the load type and the conditions around the equipment. Sealing matters just as much: labyrinth or contact seals keep grease in and hold dust and water out. Check that the housing accepts a spherical outer ring and that the locking method, whether set screws or an eccentric collar, fits the application. Use the lubricant the manufacturer specifies, and align the assembly carefully during mounting so the bearing is not stressed.

Insert bearings are matched by bore diameter and configuration rather than by code alone. Bring a code from another brand and the team can point to the NTN replacement. Interchangeability comes down to dimensions and fixing style, not the letters on the box. To replace an insert, share the old code or the shaft and housing measurements and a suitable option will be quoted.