PL
Cylindrical roller radial bearing NNU 4938 B/SPW33 SKF 190 × 260 × 69 mm
Specifications
NNU 4938 B/SPW33 SKF
- Designation
- NNU 4938 B/SPW33
- Manufacturer
- SKF
- Inner diameter d
- 190 mm
- Outer diameter D
- 260 mm
- Width B
- 69 mm
- Dynamic load rating C
- 402 kN
- Static load rating C0
- 880 kN
- Limiting speed
- 3 200 rpm
- Nominal speed
- 2 800 rpm
- Weight
- 11 kg
- Chamfer radius r
- 2 mm
- Rolling elements
- Roller cylindrical
- Load type
- Radial
- Manufacturing accuracy
- Precision
- Internal generatrix F
- 212 mm
- Permissible axial displacement s
- 1.1 mm
Product summary
NNU 4938 B/SPW33: cylindrical roller bearing, brand SKF. Bore diameter d 190 mm, outside diameter D 260 mm, width B 69 mm. Dynamic load rating C 402 kN, static load rating C0 880 kN, limiting speed 3200 rpm, weight 11 kg.
Line contact between the roller and the raceway gives a high radial load capacity and resistance to shock loads. The rings are separable, which makes mounting and dismounting easier.
Where it is used
Floating bearing for gearbox, transmission and large electric motor shafts, roll necks, assemblies that need high radial stiffness. Designs N and NU let the shaft expand freely as it heats up, while NJ and NUP locate it in one or both directions.
When not to use
Do not fit it instead of a tapered roller or angular contact bearing: designs N and NU carry no axial load at all. The shaft will shift along its axis, the roller ends will run against the ring ribs, causing heat and scoring. The reverse swap is wrong too: the bearing is not self-aligning, and misaligned supports move the roller contact to the edge of the raceway.
Technical data is for information only. Drawings may not show all design features.
About the technical data
* - Technical specifications and other information are provided for reference only. We provide this data and believe the information to be reliable, however, no guarantee of accuracy or completeness of such information can be provided.
- Drawings and images may not reflect all design features of the product.