PL
Spherical roller radial bearing 21311CW33 NTE 55 × 120 × 29 mm
Specifications
21311CW33 NTE
- Designation
- 21311CW33
- Manufacturer
- NTE
- Inner diameter d
- 55 mm
- Outer diameter D
- 120 mm
- Width B
- 29 mm
- Dynamic load rating C
- 156 kN
- Static load rating C0
- 166 kN
- Limiting speed
- 7 500 rpm
- Nominal speed
- 5 600 rpm
- Weight
- 1.7 kg
- Rolling elements
- Spherical roller bearings
- Load type
- Radial
- Number of rows
- Double-row
- Mounting hole
- Cylindrical
Product summary
21311CW33: spherical roller bearing, brand NTE. Bore diameter d 55 mm, outside diameter D 120 mm, width B 29 mm. Dynamic load rating C 156 kN, static load rating C0 166 kN, limiting speed 7500 rpm, weight 1.7 kg.
Two rows of barrel-shaped rollers on the spherical raceway of the outer ring: high load capacity combined with compensation of misalignment. For heavy and shock loads at low and medium speeds.
Where it is used
Vibrating screens and sieves, belt conveyor pulleys, crushers, mills, high-power fans, long line shafts that deflect. The spherical outer raceway compensates for misalignment of supports in a welded frame that cannot be corrected by machining.
When not to use
Do not fit it instead of a deep groove ball bearing in a high-speed assembly: in the same size, a spherical roller bearing can have a limiting speed several times lower, so the assembly will overheat and push grease out through the seals. The reverse swap costs even more: if the supports are misaligned, any rigid bearing will run on the edge of the raceway and start spalling within a few hundred hours.
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.