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The NU306ET/C3 is a single-row cylindrical roller bearing with an inner diameter of 30 mm, an outside diameter of 72 mm, and a width of 19 mm. The "E" stands for a high-capacity design, "T" denotes a synthetic/polyamide cage, and "C3" indicates greater-than-normal internal clearance to accommodate thermal expansion.

Core Dimensions

Inside Diameter (Bore): 30 mm
Outside Diameter: 72 mm
Width: 19 mm

Specifications & Design

Design Type: NU (Two integral flanges on the outer ring, no flanges on the inner ring)
Axial Displacement: Allows shaft expansion in both directions
Cage Material: Glass-fiber reinforced polyamide (often marked as TVP or T)
Clearance: C3 (greater than standard, ideal for higher speeds and thermal expansion