NNU4948B/SPW33 Bearing 240x320x80 Cylindrical Roller Bearing

NNU4948 Specification:

NNU4948B/SPW33 bearing features a cylindrical roller bearing.
As for this bearing model,
Bore (d): 240mm
Outer Diameter (D): 320mm
Width (B): 80mm
Mass: 18.30kg/ 40.34lb
Material: chrome steel, AISI 52100
Seal Type: open
Number of Row: 2
Radial Internal Play: standard CN
Working Temperature: -30°C – 120°C
Suffix B: current standard design with a double-pronged brass cage
Suffix SP: special precision class for machine tool bearings, accuracy between P5 and P4
Suffix W33: outer ring with lubrication groove and three holes

NNU 4948 B/SPW33 Key Features:

1. Bearing NNU 4948 B/SPW33 features a double row cylindrical roller structure, providing high radial load capacity and excellent rigidity for demanding applications.
2. This precision cylindrical roller bearing offers dimensional accuracy approximately equivalent to P5 and running accuracy approximately equivalent to P4, making it suitable for machine tool use.
3. The double row roller design allows this bearing to handle high radial loads while maintaining smooth and stable operation.
4. This machine tool bearing is widely used in precision machinery, spindle systems, CNC equipment, and other high-accuracy industrial applications.