N305 FAG Cylindrical Roller Bearing 25x62x17mm

The N305 FAG is a single-row cylindrical roller bearing featuring a cage design. It comprises a solid inner ring, a solid outer ring, and cylindrical rollers held in place by a cage, which minimizes roller-to-roller contact. This design allows the bearing to operate at higher speeds compared to full-complement cylindrical roller bearings. Additionally, single-row cylindrical roller bearings with cages offer high rigidity and are capable of withstanding substantial radial loads. Their separable inner and outer rings also make them easy to install. Typical applications include gearboxes, pumps, compressors, electric motors, and agricultural machinery.

The N305 FAG specifically follows the "N" design, meaning the inner ring has two integral flanges, while the outer ring has none. This configuration allows the bearing to support only radial loads, making it suitable for use as a floating bearing. Floating bearings accommodate axial displacement of the shaft in both directions, which is essential in applications subject to thermal expansion or contraction of the shaft material.

Radial internal clearance CN Group N (CN)
Tolerance class PN Normal (PN)
Number of rolling element rows 1 Single-row design

Main Dimensions & Performance Data
d 25 mm Bore diameter
D 62 mm Outside diameter
B 17 mm Width
C r 49,000 N Basic dynamic load rating, radial
C 0r 37,500 N Basic static load rating, radial
C ur 5,700 N Fatigue load limit, radial
n G 14,400 1/min Limiting speed
n ?r 10,100 1/min Reference speed
0.241 kg

Mounting dimensions
d a min 32 mm Minimum diameter shaft shoulder
d a max 33 mm Maximum diameter of shaft shoulder
D a max 55 mm Maximum diameter of housing shoulder
d c min 40 mm Minimum shaft shoulder
r a max 1 mm Maximum recess radius

Dimensions
r min 1.1 mm Minimum chamfer dimension
r 1 min 1.1 mm Minimum chamfer dimension
s 1.5 mm Axial displacement
E 54 mm Raceway diameter outer ring
F 34 mm Raceway diameter inner ring
D 1 min 50.7 mm Minimum rib diameter outer ring
d 1 38.1 mm Maximum rib diameter inner ring

Temperature range
T min -30 Degree celsius operating temperature min.
T max 120 Degree celsius operating temperature max.