Part Number | R8-30E3 |
Brand: BearingMaker | Interchangeable With: ROTEK |
System of Measurement | Inch |
Series | 5000 Series |
Gear | External Gear |
Type | Roller |
Bearing Type | Standard |
Product Type | Slewing Beraing |
Inside Diameter Of Inner Ring | 26.06″ |
Outside Diameter Of Outer Ring | 31.150″ |
Internal Diameter On Outer Ring | 30.000″ |
External Diameter On Inner Ring | 30.157″ |
Height Of Overall Bearing Assembly | 2.874″ |
Height Of Inner Ring | 2.520″ |
Height Of Outer Ring | 2.520″ |
Bolt Circle In Inner Ring | 27.500″ |
Bolt Circle In Outer Ring | 32.625″ |
Size Holes In Inner Ring | 0.69 |
Size Holes In Outer Ring | 0.69 |
Number Holes In Inner Ring | 24 |
Number Holes In Outer Ring | 24 |
Pitch Diameter Of Gear | 34.750″ |
Diametral Pitch | 4 |
Number Of Gear Teeth | 139 |
Max Gear Tooth Load Fz | 11309 lbs |
Basic Static Load Rating(C0a) | 373200 lbs |
Moment Load Rating | 228700 ft-lbs |
Correspond | 1 |
Tooth Form | 20 Stub |
Ring Material | 42CRO or 50MN |
Ball Materrial | Chrome Steel |
Cage Material | Nylon or 300 Series Stainless Steel |
Seal Material | NBR |
RoHS | Compliant |
Weight | 280 lbs |
Gear Hardness | 250-300 BHN |
F | 2.52 |

R8-30E3
Design 2.52eatures of R8-30E3 Bearing
The design feature of a R8-30E3 is its ability to handle radial, axial, and moment loads simultaneously, thanks to its crossed cylindrical rollers arranged at a 90-degree angle. R8-30E3 inside diameter of inner ring is 26.06″. Its outside diameter of outer ring is 31.150″. This structure allows for high precision, stability, and compactness in applications with limited space.
What Benefits Can R8-30E3 Bearing Provide?
- High Load Capacity: It can handle heavy radial, axial, and tilting loads, making it ideal for demanding applications.
- Precision and Stability: The crossed rollers provide precise movement, ensuring smooth operation and stability.
- Space Efficiency: The design allows for a compact, lightweight solution without sacrificing strength.
- Durability: It is made to last, with robust materials and construction, minimizing maintenance and downtime.
- Versatility: Used in a variety of applications, including cranes, robotics, and heavy machinery, offering flexibility in different industries.
What Can R8-30E3 Bearing Be Used for?
- Cranes and Excavators: Supports heavy loads while rotating.
- Robotics: Allows accurate movement in robotic arms and machines.
- Medical Equipment: In devices like MRI machines where smooth and reliable motion is crucial.
- Solar Panels: Rotates solar panels to follow the sun for optimal energy collection.
- Wind Turbines: Helps with the smooth movement of turbine blades.
- Aerospace: Used in satellite positioning and aerospace testing equipment.