Single-row cylindrical roller bearings
NJ221M Cylindrical Roller Bearing Dimensions & Specifications
NJ221M cylindrical roller bearing: 105 mm bore (d), 190 mm outside diameter (D), 36 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 105 mm |
|---|---|
| Outside diameter D | 190 mm |
| Width B | 36 mm |
| Mass | 4.34 kg |
| Catalogue dynamic load Cr | 210 kN |
| Catalogue static load Cor | 290 kN |
| Grease-lubricated speed grease | 3000 rpm |
| Oil-lubricated speed oil | 3600 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 179 mm |
|---|---|
| Abutment dimension db db | 121 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 | 126.8 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NJ221M?
The NJ221M catalogue lists Da = 179 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 NJ221M?
The listed values for NJ221M are grease: 3000 rpm; oil: 3600 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 NJ221M?
The catalogue reference mass for NJ221M is 4.34 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.