The NU309ET/C3 cylindrical roller bearing measures 45 mm (inner diameter) × 100 mm (outer diameter) × 25 mm (width). This metric, single-row bearing features a separable inner ring with no flanges, allowing for axial displacement in both directions and C3 clearance for higher-than-normal thermal expansion.
Specifications at a Glance
- Inner Diameter (ID): 45 mm
- Outer Diameter (OD): 100 mm
- Width: 25 mm
- Cage Type: ET indicates a reinforced, moulded polymer (polyamide/nylon) cage
- Clearance: C3 indicates greater-than-standard internal clearance to accommodate thermal expansion or slight misalignment
- Design: NU type (two integral flanges on the outer ring, no flanges on the inner ring)