The NUP2211ENM-C3 is a single-row cylindrical roller bearing for heavy-duty trucks, typically used as a component in FAST transmissions, and is fitted to models such as the Shaanxi Automobile X3000, M3000, and F3000.

NUP: Indicates bearing type. This design has one fixed flange and one movable retaining ring on the inner ring, and two fixed flanges on the outer ring. This allows the bearing to be axially positioned in two directions.

2211: Basic size designation.

22: Size series (width and diameter).

11: Bore designation, representing an inner bore diameter of (55mm) (11*5).

E: Extra capacity design, designed to improve load-bearing capacity through optimized internal structure.

NM (or M): Represents Machined Brass Cage, a material that is generally more heat-resistant and impact-resistant than steel cages.

C3: Radial clearance designation. Indicates that its internal clearance is greater than the standard group (ordinary group). This design is to cope with thermal expansion during high speeds or operation, preventing bearing lock-up.