PL
Spherical roller radial bearing 21307 CC SKF 35 × 80 × 21 mm
Specifications
21307 CC SKF
- Designation
- 21307 CC
- Manufacturer
- SKF
- Inner diameter d
- 35 mm
- Outer diameter D
- 80 mm
- Width B
- 21 mm
- Dynamic load rating C
- 76.5 kN
- Static load rating C0
- 72 kN
- Limiting speed
- 9 500 rpm
- Nominal speed
- 7 300 rpm
- Weight
- 0.55 kg
- Chamfer radius r
- 1.5 mm
- Rolling elements
- Roller spherical
- Load type
- Radial
- Number of rows
- Double-row
- Mounting hole
- Cylindrical
Product summary
21307 CC: spherical roller bearing, brand SKF. Bore diameter d 35 mm, outside diameter D 80 mm, width B 21 mm. Dynamic load rating C 76.5 kN, static load rating C0 72 kN, limiting speed 9500 rpm, weight 0.55 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.