Single-row cylindrical roller bearings
NJ244M Cylindrical Roller Bearing Dimensions & Specifications
NJ244M cylindrical roller bearing: 220 mm bore (d), 400 mm outside diameter (D), 65 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 | 400 mm |
| Width B | 65 mm |
| Mass | 35.4 kg |
| Catalogue dynamic load Cr | 760 kN |
| Catalogue static load Cor | 1200 kN |
| Grease-lubricated speed grease | 1500 rpm |
| Oil-lubricated speed oil | 1800 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 376 mm |
|---|---|
| Abutment dimension db db | 241 mm |
| Minimum chamfer r12 r12 | 4 mm |
| Minimum chamfer r34 r34 | 4 mm |
| Maximum fillet ra ra | 3 mm |
| Maximum fillet rb rb | 3 mm |
| Roller envelope diameter Fw Fw | 270 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NJ244M?
The NJ244M catalogue lists Da = 376 mm; ra ≤ 3 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 NJ244M?
The listed values for NJ244M 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 NJ244M?
The catalogue reference mass for NJ244M is 35.4 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.