Single-row cylindrical roller bearings
NU340M Cylindrical Roller Bearing Dimensions & Specifications
NU340M cylindrical roller bearing: 200 mm bore (d), 420 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 | 200 mm |
|---|---|
| Outside diameter D | 420 mm |
| Width B | 80 mm |
| Mass | 56.8 kg |
| Catalogue dynamic load Cr | 975 kN |
| Catalogue static load Cor | 1270 kN |
| Grease-lubricated speed grease | 1500 rpm |
| Oil-lubricated speed oil | 1800 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 392 mm |
|---|---|
| Abutment dimension db db | 225 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 | 260 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU340M?
The NU340M catalogue lists Da = 392 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 NU340M?
The listed values for NU340M are grease: 1500 rpm; oil: 1800 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 NU340M?
The catalogue reference mass for NU340M is 56.8 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.