Single-row cylindrical roller bearings
NU28/630 Cylindrical Roller Bearing Dimensions & Specifications
NU28/630 cylindrical roller bearing: 630 mm bore (d), 780 mm outside diameter (D), 88 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 630 mm |
|---|---|
| Outside diameter D | 780 mm |
| Width B | 88 mm |
| Mass | 98.0 kg |
| Catalogue dynamic load Cr | 1460 kN |
| Catalogue static load Cor | 3780 kN |
| Grease-lubricated speed grease | 630 rpm |
| Oil-lubricated speed oil | 750 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 764 mm |
|---|---|
| Abutment dimension db db | 646 mm |
| Minimum chamfer r12 r12 | 4 mm |
| Minimum chamfer r34 r34 | 4 mm |
| Maximum fillet ra ra | 3 mm |
| Maximum fillet rb rb | 3 mm |
| Roller envelope diameter Fw Fw | 668 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NU28/630?
The NU28/630 catalogue lists Da = 764 mm; ra ≤ 3 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 NU28/630?
The listed values for NU28/630 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 NU28/630?
The catalogue reference mass for NU28/630 is 98.0 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.