Single-row cylindrical roller bearings
NU20/670 Cylindrical Roller Bearing Dimensions & Specifications
NU20/670 cylindrical roller bearing: 670 mm bore (d), 980 mm outside diameter (D), 180 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 670 mm |
|---|---|
| Outside diameter D | 980 mm |
| Width B | 180 mm |
| Mass | 480 kg |
| Catalogue dynamic load Cr | 5160 kN |
| Catalogue static load Cor | 9800 kN |
| Grease-lubricated speed grease | 430 rpm |
| Oil-lubricated speed oil | 500 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 947 mm |
|---|---|
| Abutment dimension db db | 703 mm |
| Minimum chamfer r12 r12 | 7.5 mm |
| Minimum chamfer r34 r34 | 7.5 mm |
| Maximum fillet ra ra | 6 mm |
| Maximum fillet rb rb | 6 mm |
| Roller envelope diameter Fw Fw | 746 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU20/670?
The NU20/670 catalogue lists Da = 947 mm; ra ≤ 6 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 NU20/670?
The listed values for NU20/670 are grease: 430 rpm; oil: 500 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 NU20/670?
The catalogue reference mass for NU20/670 is 480 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.