Single-row cylindrical roller bearings
NJ224EM Cylindrical Roller Bearing Dimensions & Specifications
NJ224EM cylindrical roller bearing: 120 mm bore (d), 215 mm outside diameter (D), 40 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 120 mm |
|---|---|
| Outside diameter D | 215 mm |
| Width B | 40 mm |
| Mass | 6.72 kg |
| Catalogue dynamic load Cr | 335 kN |
| Catalogue static load Cor | 420 kN |
| Grease-lubricated speed grease | 2400 rpm |
| Oil-lubricated speed oil | 3000 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 199 mm |
|---|---|
| Abutment dimension db db | 134 mm |
| Minimum chamfer r12 r12 | 2.1 mm |
| Minimum chamfer r34 r34 | 2.1 mm |
| Maximum fillet ra ra | 2 mm |
| Maximum fillet rb rb | 2 mm |
| Roller envelope diameter Fw Fw | 143.5 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NJ224EM?
The NJ224EM catalogue lists Da = 199 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 NJ224EM?
The listed values for NJ224EM are grease: 2400 rpm; oil: 3000 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 NJ224EM?
The catalogue reference mass for NJ224EM is 6.72 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.