Single-row cylindrical roller bearings
NU338M Cylindrical Roller Bearing Dimensions & Specifications
NU338M cylindrical roller bearing: 190 mm bore (d), 400 mm outside diameter (D), 78 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 190 mm |
|---|---|
| Outside diameter D | 400 mm |
| Width B | 78 mm |
| Mass | 50.2 kg |
| Catalogue dynamic load Cr | 975 kN |
| Catalogue static load Cor | 1260 kN |
| Grease-lubricated speed grease | 1200 rpm |
| Oil-lubricated speed oil | 1500 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 372 mm |
|---|---|
| Abutment dimension db db | 215 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 | 245 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU338M?
The NU338M catalogue lists Da = 372 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 NU338M?
The listed values for NU338M are grease: 1200 rpm; oil: 1500 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 NU338M?
The catalogue reference mass for NU338M is 50.2 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.