Single-row cylindrical roller bearings
NJ220EM Cylindrical Roller Bearing Dimensions & Specifications
NJ220EM cylindrical roller bearing: 100 mm bore (d), 180 mm outside diameter (D), 34 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 100 mm |
|---|---|
| Outside diameter D | 180 mm |
| Width B | 34 mm |
| Mass | 3.90 kg |
| Catalogue dynamic load Cr | 190 kN |
| Catalogue static load Cor | 260 kN |
| Grease-lubricated speed grease | 3200 rpm |
| Oil-lubricated speed oil | 3800 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 169 mm |
|---|---|
| Abutment dimension db db | 114 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 | 119 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NJ220EM?
The NJ220EM catalogue lists Da = 169 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 NJ220EM?
The listed values for NJ220EM are grease: 3200 rpm; oil: 3800 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 NJ220EM?
The catalogue reference mass for NJ220EM is 3.90 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.