Inner (d) :710 MM
Outer (D): 870 MM
Width (B): 74 MM
Weight (kg): 91.9
Product Properties
Bore: Cylindrical Bore
Seal: No Seal
Cage Type: MA - Brass Cage, Centered on Outer Ring
Material: Through-hardened bearing steel or carburized steel
01
Ultra-Large Bore Design (710mm ID)
The NU18/710 features an exceptionally large inner diameter, making it ideal for supporting heavy-duty shafts and large-scale rotating assemblies in industrial environments.
02
High Radial Load Capacity
As a single-row cylindrical roller bearing, it accommodates very high radial loads with excellent load distribution across the rollers.
03
Floating Design – Free Axial Movement
The NU-type configuration allows the inner ring to float axially relative to the outer ring. This is especially important for thermal expansion compensation, shaft alignment, and preventing internal stress during operation.
04
Optimized for Low Friction & High Speed
The rolling element profile and cage design minimize friction and heat generation, enabling stable performance at moderate to high rotational speeds.
Applications
The NU18/710 bearing is specifically designed for heavy-duty industrial machinery, where extreme radial loads, large shaft diameters, and axial flexibility are required. It's widely used in the following sectors:
| Industry | Typical Equipment | Bearing Function |
|---|---|---|
| Metallurgy & Steel | Rolling mills, bloom casters | Support large work rolls and backup rolls |
| Cement & Mining | Rotary kilns, crushers, grinders | Accommodate large radial forces on rotating drums |
| Power Generation | Turbogenerators, hydro turbines | Main rotor shaft support under heavy load |
| Marine Propulsion | Large propulsion shafts, thrust blocks | High-load shaft bearing with axial float capability |
| Pulp & Paper | Calender rolls, drying cylinders | Support high-mass rotating shafts with heat expansion |
| Oil & Gas | Large compressors, mud pumps | Radial load support with shaft movement allowance |
| Wind Energy (Heavy Class) | Yaw drives, turbine bases | Heavy-load radial bearing with misalignment tolerance |
Ideal For:
- Applications with shaft thermal elongation
- Designs requiring one floating bearing and one fixed bearing
- Machinery where ease of mounting/dismounting is important (separable components)
- Equipment with shock loads and high reliability demands
Need NU18/710 for Your Equipment?
Our technical team can assist with dimensional verification, bearing pairing (fixed + floating), lubrication solutions, and drop-in replacements. We also provide customized bearing kits and full support for OEM or retrofit projects.
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