Single-row cylindrical roller bearings
NJ18/800 Cylindrical Roller Bearing Dimensions & Specifications
NJ18/800 cylindrical roller bearing: 800 mm bore (d), 980 mm outside diameter (D), 82 mm width (B). Review the available technical values below. Matching dimensions alone do not confirm interchangeability between designations or suffixes.
Technical specifications
| Bore d | 800 mm |
|---|---|
| Outside diameter D | 980 mm |
| Width B | 82 mm |
| Mass | 145 kg |
| Catalogue dynamic load Cr | 1650 kN |
| Catalogue static load Cor | 3980 kN |
| Grease-lubricated speed grease | 450 rpm |
| Oil-lubricated speed oil | 530 rpm |
Mounting dimensions & additional parameters (7)
| Abutment dimension Da Da | 940 mm |
|---|---|
| Abutment dimension db db | 837 mm |
| Minimum chamfer r12 r12 | 5 mm |
| Minimum chamfer r34 r34 | 5 mm |
| Maximum fillet ra ra | 4 mm |
| Maximum fillet rb rb | 4 mm |
| Roller envelope diameter Fw Fw | 848 mm |
Fields without confirmed values are omitted. Final supply configuration and application suitability require technical confirmation.
Selection & installation
Which mounting dimensions are listed for NJ18/800?
The NJ18/800 catalogue lists Da = 940 mm; ra ≤ 4 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 NJ18/800?
The listed values for NJ18/800 are grease: 450 rpm; oil: 530 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 NJ18/800?
The catalogue reference mass for NJ18/800 is 145 kg. Confirm the supplied assembly and packed shipment weight separately when planning handling or transport.