Single-row cylindrical roller bearings
NU20/500 Cylindrical Roller Bearing Dimensions & Specifications
NU20/500 cylindrical roller bearing: 500 mm bore (d), 720 mm outside diameter (D), 128 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 500 mm |
|---|---|
| Outside diameter D | 720 mm |
| Width B | 128 mm |
| Mass | 180 kg |
| Catalogue dynamic load Cr | 2720 kN |
| Catalogue static load Cor | 5600 kN |
| Grease-lubricated speed grease | 630 rpm |
| Oil-lubricated speed oil | 750 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 680 mm |
|---|---|
| Abutment dimension db db | 537 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 | 553 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU20/500?
The NU20/500 catalogue lists Da = 680 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 NU20/500?
The listed values for NU20/500 are grease: 630 rpm; oil: 750 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 NU20/500?
The catalogue reference mass for NU20/500 is 180 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.