Single-row cylindrical roller bearings
NU252M Cylindrical Roller Bearing Dimensions & Specifications
NU252M cylindrical roller bearing: 260 mm bore (d), 480 mm outside diameter (D), 80 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 260 mm |
|---|---|
| Outside diameter D | 480 mm |
| Width B | 80 mm |
| Mass | 67.2 kg |
| Catalogue dynamic load Cr | 985 kN |
| Catalogue static load Cor | 1800 kN |
| Grease-lubricated speed grease | 1100 rpm |
| Oil-lubricated speed oil | 1400 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 450 mm |
|---|---|
| Abutment dimension db db | 286 mm |
| Minimum chamfer r12 r12 | 5 mm |
| Minimum chamfer r34 r34 | 5 mm |
| Maximum fillet ra ra | 4 mm |
| Maximum fillet rb rb | 4 mm |
| Roller envelope diameter Fw Fw | 320 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU252M?
The NU252M catalogue lists Da = 450 mm; ra ≤ 4 mm. Check these symbols against the bearing drawing and the shaft/housing shoulders; they are not shaft or housing fit tolerances.
What speed values are available for NU252M?
The listed values for NU252M are grease: 1100 rpm; oil: 1400 rpm. These catalogue references do not determine a safe operating speed on their own. Confirm load, clearance, lubrication and heat conditions for the application.
What is the reference mass of NU252M?
The catalogue reference mass for NU252M is 67.2 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.