Part Number | 21311 EK/C3 |
Brand: BearingMaker | Interchangeable With: SKF |
System of Measurement | Metric |
Bearing Type | Roller |
Roller Bearing Type | Spherical |
Bore Type | Taper 1:12 |
For Load Direction | Combined |
Construction | Double Row |
Seal Type | Open |
Bore Dia | 55 mm |
Bore Dia Tolerance | +0.03mm to 0 |
Outer Dia | 120 mm |
Outer Dia Tolerance | -0.015mm to 0 |
Width | 29 mm |
Width Tolerance | -0.06mm to 0 |
Shoulder Dia Of Inner Ring | 72.7 mm |
Shoulder/Recess Dia Of Outer Ring | 96.2 mm |
Width Of Lubrication Groove | 6 mm |
Diameter Of Lubrication Hole | 3 mm |
Chamfer Dimension | min.2 mm |
Ring Material | Chrome Steel |
Roller Material | Chrome Steel |
Cage Material | Steel |
Dynamic Radial Load | 35745 lbf |
Static Radial Load | 37318 lbf |
Max Speed (X1000 rpm) | 7.5 |
Lubrication | Required |
Temperature Range | -30° to 200 °C |
Radial Clearance | C3 |
Radial run-out | Standard |
RoHs | Compliant |
REACH | Compliant |
Weight | 1.7 kg |

21311 EK/C3
Design Features of 21311 EK/C3 Bearing
21311 EK/C3 Bearing features two rows of spherical rollers, enhancing load-carrying capacity and stability while accommodating misalignment between the shaft and housing. 21311 EK/C3 outer dia is 120 mm. Its bore dia is 55 mm. Its optimized roller geometry, durable materials, and effective lubrication options make it ideal for demanding applications in industries such as mining and heavy machinery.
What Benefits Can 21311 EK/C3 Bearing Provide?
- High Load Capacity: It can support higher radial and axial loads due to its double row design, making it suitable for heavy-duty applications.
- Self-Alignment: The spherical design allows it to accommodate misalignment, reducing stress on the bearing and extending its lifespan.
- Enhanced Stability: Its robust construction provides improved rigidity and stability, which is crucial in applications requiring precise load distribution.
- Reduced Maintenance: The effective lubrication options and durable materials minimize wear and the need for frequent maintenance, leading to reduced downtime.
- Smooth Operation: Optimized roller geometry decreases friction and enhances performance, resulting in smoother operation and lower noise levels.
What Can 21311 EK/C3 Bearing Be Used for?
- Heavy Machinery: Commonly found in construction and mining equipment, where it can handle high radial loads and misalignment.
- Industrial Gearboxes: Suitable for use in gearboxes, providing support for high loads and ensuring smooth operation.
- Wind Turbines: Utilized in the rotor assembly, as it can accommodate both radial and axial loads while compensating for misalignment.
- Material Handling Equipment: Used in cranes, conveyors, and hoists, where durability and load-bearing capacity are essential.
- Pulp and Paper Mills: Commonly employed in rollers and presses due to their ability to withstand heavy loads and harsh operating conditions.
$64.00