Single-row cylindrical roller bearings
NU1944M Cylindrical Roller Bearing Dimensions & Specifications
NU1944M cylindrical roller bearing: 220 mm bore (d), 300 mm outside diameter (D), 38 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 220 mm |
|---|---|
| Outside diameter D | 300 mm |
| Width B | 38 mm |
| Mass | 7.88 kg |
| Catalogue dynamic load Cr | 295 kN |
| Catalogue static load Cor | 495 kN |
| Grease-lubricated speed grease | 1900 rpm |
| Oil-lubricated speed oil | 2400 rpm |
Mounting dimensions & additional parameters (10)
| Abutment dimension Da Da | 283 mm |
|---|---|
| Abutment dimension Db Db | 286 mm |
| Abutment dimension da da | 236 mm |
| Abutment dimension db db | 233 mm |
| Minimum chamfer r12 r12 | 2.1 mm |
| Minimum chamfer r34 r34 | 1.5 mm |
| Maximum fillet ra ra | 2 mm |
| Maximum fillet rb rb | 1.5 mm |
| Roller envelope diameter Ew Ew | 280 mm |
| Roller envelope diameter Fw Fw | 240 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU1944M?
The NU1944M catalogue lists da = 236 mm; Da = 283 mm; ra ≤ 2 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 NU1944M?
The listed values for NU1944M are grease: 1900 rpm; oil: 2400 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 NU1944M?
The catalogue reference mass for NU1944M is 7.88 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.