Single-row cylindrical roller bearings
NU268M Cylindrical Roller Bearing Dimensions & Specifications
NU268M cylindrical roller bearing: 340 mm bore (d), 620 mm outside diameter (D), 92 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 340 mm |
|---|---|
| Outside diameter D | 620 mm |
| Width B | 92 mm |
| Mass | 128 kg |
| Catalogue dynamic load Cr | 1590 kN |
| Catalogue static load Cor | 2410 kN |
| Grease-lubricated speed grease | 900 rpm |
| Oil-lubricated speed oil | 1200 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 582 mm |
|---|---|
| Abutment dimension db db | 374 mm |
| Minimum chamfer r12 r12 | 6 mm |
| Minimum chamfer r34 r34 | 6 mm |
| Maximum fillet ra ra | 5 mm |
| Maximum fillet rb rb | 5 mm |
| Roller envelope diameter Fw Fw | 420 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU268M?
The NU268M catalogue lists Da = 582 mm; ra ≤ 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 NU268M?
The listed values for NU268M are grease: 900 rpm; oil: 1200 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 NU268M?
The catalogue reference mass for NU268M is 128 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.