NU318 90x190x43 Bearing
Single Row Cylindrical Roller Bearing
The NU318 Single Row Cylindrical Roller Bearing is a versatile and robust component designed to meet the demanding requirements of various industrial applications. This bearing type is particularly known for its ability to handle high radial loads while allowing for axial displacement, making it ideal for heavy-duty machinery where alignment flexibility and load capacity are critical.
Performance Overview of the NU318 Bearings
| Category | Specification |
|---|---|
| Brand | AMIGO NU318 | Interchangeable With: SKF NU318 |
| Bore diameter | 90 mm |
| Outside diameter | 190 mm |
| Width | 43 mm |
| Bearing part | Complete bearing |
| Axial displacement capability | In both directions |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Machined metal |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 0 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Basic dynamic load rating | 365 kN |
| Basic static load rating | 360 kN |
| Reference speed | 3800 r/min |
| Limiting speed | 4500 r/min |
| Product net weight | 6.03 kg |
| Dimensions(mm) | 90x190x43 |
| Category | Specification |
|---|---|
| Brand | AMIGO NU318 | Interchangeable With: SKF NU318 |
| Bore diameter | 3.543 in |
| Outside diameter | 7.48 in |
| Width | 1.693 in |
| Bearing part | Complete bearing |
| Axial displacement capability | In both directions |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Machined metal |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 0 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Basic dynamic load rating | 82,055 lbf |
| Basic static load rating | 80,931 lbf |
| Reference speed | 3,800 r/min |
| Limiting speed | 4,500 r/min |
| Product net weight | 13.285 lb |
| Dimensions(mm) | 90x190x43 |
Specifications Overview of the NU318 Bearings
| Category | Dimension |
|---|---|
| Bore diameter | 90 mm |
| Outside diameter | 190 mm |
| Width | 43 mm |
| Raceway diameter of inner ring | 113.5 mm |
| Chamfer dimension (min) | 3 mm |
| Permissible axial displacement | max. 2.5 mm |
| Dimension | Specification |
|---|---|
| Bore diameter | 3.543 in |
| Outside diameter | 7.48 in |
| Width | 1.693 in |
| Raceway diameter of inner ring | 4.469 in |
| Chamfer dimension | min. 0.118 in |
| Permissible axial displacement | max. 0.098 in |
| Diameter of spacer sleeve (min) | min. 4.094 in |
| Diameter of spacer sleeve (max) | max. 4.331 in |
| Diameter of shaft abutment (min) | min. 4.567 in |
| Diameter of housing abutment (max) | max. 6.902 in |
| Radius of fillet (max) | max. 0.098 in |
Applicable Machines and Industries
The NU318 Single Row Cylindrical Roller Bearing is used in a variety of heavy-duty machinery and industrial applications. Its primary role is to support radial loads, which are loads perpendicular to the shaft, and to allow for smooth, precise rotational movement of the machinery’s components. The bearing’s design also permits some axial displacement, which is the movement along the axis of the shaft, making it ideal for applications where misalignment or shaft deflection occurs.
Applications and Roles:
Electric Motors:
- Role: Supports the rotor, allowing for smooth, high-speed rotation while handling radial loads.
- Common Brands: Siemens, ABB, GE, Toshiba.
Gearboxes:
- Role: Supports the gears within the gearbox, ensuring smooth transmission of power and handling heavy radial loads.
- Common Brands: SEW-Eurodrive, Nord Drivesystems, Bonfiglioli, Sumitomo.
Pumps:
- Role: Supports the impeller shaft, allowing for smooth rotation and efficient transfer of fluids under high pressure.
- Common Brands: Grundfos, KSB, Sulzer, Flowserve.
Compressors:
- Role: Supports the compressor shaft, enabling high-speed rotation and handling significant radial loads.
- Common Brands: Ingersoll Rand, Atlas Copco, Gardner Denver, Kaeser.
Fans and Blowers:
- Role: Ensures the fan blades or blower impellers rotate smoothly while managing the forces generated by air or gas movement.
- Common Brands: Greenheck, Howden, FläktGroup, Twin City Fan.
Paper Mill Machinery:
- Role: Supports the rollers that process paper, allowing for smooth operation under high load and speed conditions.
- Common Brands: Voith, Andritz, Metso, Valmet.
These machines often operate under demanding conditions, requiring bearings like the NU318 to ensure reliable, long-lasting performance. The bearing’s ability to manage both heavy radial loads and some axial displacement makes it versatile and essential in these industrial applications.
NU318 Bearing Cross Reference and Interchange
| Brand | Bearing Model |
|---|---|
| Amigo | NU318 |
| SKF | NU318ECM |
| FAG | NU318 E-XL-M1 |
| NTN | NU318E |
| KOYO | NU318 |
| NSK | NU318EM |
This guide provides a cross-reference of equivalent bearing models from different manufacturers that can be used interchangeably with the Amigo NU318 bearing.
Choosing the Right Bearing
When selecting a cylindrical roller bearing like the NU318, it’s important to compare different models to ensure you choose the best option for your application.
When to Choose the Amigo NU318 Bearing
Choosing the right bearing can significantly impact the performance and longevity of your machinery. Here’s why the Amigo NU318 stands out and when you should choose it:
Cost-Effectiveness:
- If you’re looking for a bearing that offers similar performance to premium brands like SKF, FAG, and NSK but at a more competitive price, the Amigo NU318 is the ideal choice. It combines high-quality construction with affordability, providing excellent value for your investment.
Performance Requirements:
- The Amigo NU318 bearing is engineered to handle high dynamic and static loads, making it suitable for demanding industrial applications. It performs consistently across a wide range of operating speeds, ensuring your machinery runs smoothly under various conditions.
Durability in Harsh Conditions:
- For environments where bearings are exposed to extreme temperatures or contaminants, the Amigo NU318’s robust design and high-grade steel construction ensure long-lasting performance. This makes it an excellent choice for heavy-duty applications where reliability is crucial.
Availability and Compatibility:
- If you need a reliable bearing that is readily available and compatible with your existing machinery, the Amigo NU318 is a smart choice. It is designed to match or exceed the specifications of similar models from other brands, ensuring seamless integration into your equipment.
| Feature | Amigo NU318 | SKF NU318ECM | FAG NU318 E-XL-M1 | NTN NU318E | KOYO NU318 | NSK NU318EM |
|---|---|---|---|---|---|---|
| Dynamic Load Capacity (C) | 266 kN | 266 kN | 266 kN | 266 kN | 266 kN | 266 kN |
| Static Load Capacity (C0) | 265 kN | 265 kN | 265 kN | 265 kN | 265 kN | 265 kN |
| Fatigue Load Limit (Cu) | 29.3 kN | 29.3 kN | 29.3 kN | 29.3 kN | 29.3 kN | 29.3 kN |
| Reference Speed | 4300 rpm | 4300 rpm | 4300 rpm | 4300 rpm | 4300 rpm | 4300 rpm |
| Limiting Speed | 3700 rpm | 3700 rpm | 3700 rpm | 3700 rpm | 3700 rpm | 3700 rpm |
| Weight | 5.3 kg | 5.3 kg | 5.3 kg | 5.3 kg | 5.3 kg | 5.3 kg |
| Material Quality | High-Grade Steel | Premium Steel | High-Grade Steel | High-Grade Steel | High-Grade Steel | High-Grade Steel |
| Price | Competitive | Higher | Higher | Competitive | Competitive | Higher |
| Warranty | 1 Year | 1 Year | 1 Year | 1 Year | 1 Year | 1 Year |
Recommended Products for Optimal Performance
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Why Amigo NU318 Bearings Are the Top Choice
"I’ve been using the Amigo NU318 bearings for several months now in my heavy-duty industrial machinery, and I have to say, they perform just as well as the SKF bearings I’ve used in the past. The smooth operation and durability of these bearings are impressive, especially considering the tough conditions they operate in. It’s great to find a bearing that matches the quality of top brands like SKF without the hefty price tag."
Duncan Senger
"The Amigo NU318 bearing has proven to be an excellent choice for our manufacturing equipment. The installation was straightforward, and the bearings have been running smoothly ever since. I’ve used SKF bearings for years, and I can confidently say that these Amigo bearings deliver similar performance and reliability. They’re definitely a great value for the money."
Alana Kirlin
"We replaced our SKF bearings with the Amigo NU318 in one of our most critical machines, and the results have been outstanding. The bearings have been running with minimal noise and no signs of wear, even under high load conditions. I’m really impressed with how closely these bearings match the performance of more expensive brands like SKF. Amigo has done a fantastic job with these bearings."
Jason Lowe
"After using SKF bearings for years, I was skeptical about switching to a different brand, but the Amigo NU318 bearings have exceeded my expectations. They offer the same level of smooth operation and durability that I’ve come to expect from SKF. The transition was seamless, and I haven’t noticed any difference in performance. These bearings are a great alternative for anyone looking for high-quality bearings at a competitive price."
Dameon Becker
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