Single-row cylindrical roller bearings
NU20/530 Cylindrical Roller Bearing Dimensions & Specifications
NU20/530 cylindrical roller bearing: 530 mm bore (d), 780 mm outside diameter (D), 145 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 530 mm |
|---|---|
| Outside diameter D | 780 mm |
| Width B | 145 mm |
| Mass | 255 kg |
| Catalogue dynamic load Cr | 3500 kN |
| Catalogue static load Cor | 7100 kN |
| Grease-lubricated speed grease | 560 rpm |
| Oil-lubricated speed oil | 670 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 754 mm |
|---|---|
| Abutment dimension db db | 570 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 | 591 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU20/530?
The NU20/530 catalogue lists Da = 754 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 NU20/530?
The listed values for NU20/530 are grease: 560 rpm; oil: 670 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 NU20/530?
The catalogue reference mass for NU20/530 is 255 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.