Single-row cylindrical roller bearings
N321EM Cylindrical Roller Bearing Dimensions & Specifications
N321EM cylindrical roller bearing: 105 mm bore (d), 225 mm outside diameter (D), 49 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 | 225 mm |
| Width B | 49 mm |
| Mass | 10.5 kg |
| Catalogue dynamic load Cr | 420 kN |
| Catalogue static load Cor | 550 kN |
| Grease-lubricated speed grease | 2200 rpm |
| Oil-lubricated speed oil | 2800 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Db Db | 203 mm |
|---|---|
| Abutment dimension da da | 121 mm |
| Minimum chamfer r12 r12 | 3 mm |
| Minimum chamfer r34 r34 | 3 mm |
| Maximum fillet ra ra | 2.5 mm |
| Maximum fillet rb rb | 2.5 mm |
| Roller envelope diameter Ew Ew | 201 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for N321EM?
The N321EM catalogue lists da = 121 mm; ra ≤ 2.5 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 N321EM?
The listed values for N321EM are grease: 2200 rpm; oil: 2800 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 N321EM?
The catalogue reference mass for N321EM is 10.5 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.