Single-row cylindrical roller bearings
NU2280 Cylindrical Roller Bearing Dimensions & Specifications
NU2280 cylindrical roller bearing: 400 mm bore (d), 720 mm outside diameter (D), 185 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 400 mm |
|---|---|
| Outside diameter D | 720 mm |
| Width B | 185 mm |
| Mass | 344 kg |
| Catalogue dynamic load Cr | 4300 kN |
| Catalogue static load Cor | 7800 kN |
| Grease-lubricated speed grease | 800 rpm |
| Oil-lubricated speed oil | 950 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 680 mm |
|---|---|
| Abutment dimension db db | 435 mm |
| Minimum chamfer r12 r12 | 6 mm |
| Minimum chamfer r34 r34 | 6 mm |
| Maximum fillet ra ra | 5 mm |
| Maximum fillet rb rb | 5 mm |
| Roller envelope diameter Fw Fw | 485 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU2280?
The NU2280 catalogue lists Da = 680 mm; ra ≤ 5 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 NU2280?
The listed values for NU2280 are grease: 800 rpm; oil: 950 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 NU2280?
The catalogue reference mass for NU2280 is 344 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.