NU 1018 M/C4VA3091 90x140x24 Bearing
Single Row Cylindrical Roller Bearing
The NU 1018 M/C4VA3091 Single Row Cylindrical Roller Bearing is a high-performance bearing designed for demanding industrial applications, offering exceptional reliability, load-carrying capacity, and durability. Manufactured to the highest standards, this bearing is ideally suited for industries that require heavy-duty machinery capable of enduring high radial loads, such as the automotive, energy, and manufacturing sectors.
Performance Overview of the NU 1018 M/C4VA3091 Bearings
| Category | Detail/Specification |
|---|---|
| Brand | AMIGO NU 1018 M/C4VA3091| Interchangeable With: SKF NU 1018 M/C4VA3091 |
| Bore diameter | 90 mm |
| Outside diameter | 140 mm |
| Width | 24 mm |
| Basic dynamic load rating | 80.9 kN |
| Basic static load rating | 104 kN |
| Reference speed | 5,600 r/min |
| Limiting speed | 5,600 r/min |
| 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 | C4 |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Insulation coating on outer ring |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 1.33 kg |
| Dimensions(mm) | 90x140x24 |
| Category | Detail/Specification |
|---|---|
| Brand | AMIGO NU 1018 M/C4VA3091| Interchangeable With: SKF NU 1018 M/C4VA3091 |
| Bore diameter | 3.543 in |
| Outside diameter | 5.512 in |
| Width | 0.945 in |
| Basic dynamic load rating | 18,187 lbf |
| Basic static load rating | 23,380 lbf |
| Reference speed | 5,600 r/min |
| Limiting speed | 5,600 r/min |
| 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 | C4 |
| Tolerance class | Normal |
| Material, bearing | Bearing steel |
| Coating | Insulation coating on outer ring |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 2.939 lb |
| Dimensions(mm) | 90x140x24 |
Specifications Overview of the NU 1018 M/C4VA3091 Bearings
| Dimensions | Details |
|---|---|
| Bore diameter | 90 mm |
| Outside diameter | 140 mm |
| Width | 24 mm |
| Raceway diameter inner ring | 103 mm |
| Permissible axial displacement | max. 3.5 mm |
| Chamfer dimension (r?,?) | min. 1.5 mm |
| Chamfer dimension (r?,?) | min. 1.1 mm |
| Dimensions | Details |
|---|---|
| Bore diameter | 3.543 in |
| Outside diameter | 5.512 in |
| Width | 0.945 in |
| Raceway diameter inner ring | 4.055 in |
| Permissible axial displacement | max. 0.138 in |
| Chamfer dimension (r?,?) | min. 0.059 in |
| Chamfer dimension (r?,?) | min. 0.043 in |
Applicable Machines and Industries
Electric Motors:
- Role: In electric motors, the bearing supports the rotating shaft, allowing smooth and efficient operation under heavy radial loads. The C4 clearance accommodates thermal expansion, making it ideal for high-speed electric motors.
Pumps:
- Role: The bearing supports the pump shaft, ensuring a steady and smooth rotation. It helps handle the high radial loads and withstands operational stress over extended periods.
Gearboxes:
- Role: The bearing supports the shafts in gearboxes, providing stability and reducing friction between rotating elements. Its ability to handle heavy radial loads makes it suitable for high-performance gearboxes.
Compressors:
- Role: In compressors, the bearing plays a critical role in supporting the rotating elements, ensuring low friction and high operational efficiency, even in high-temperature environments.
Turbines:
- Role: In turbines, the bearing supports the rotating components under heavy radial loads, ensuring smooth, efficient operation. Its durability makes it suitable for long operational cycles in high-speed turbines.
Paper Mills:
- Role: The bearing ensures the proper function of the rollers and other rotating parts, handling significant radial loads in machinery like paper rollers.
Role of NU 1018 M/C4VA3091 in These Machines:
The NU 1018 M/C4VA3091 Single Row Cylindrical Roller Bearing is engineered to handle high radial loads in industrial applications, ensuring smooth operation and long service life. The C4 clearance provides room for thermal expansion, making it suitable for high-temperature environments. With its machined brass cage, it is built to resist wear, reduce friction, and ensure stability during high-speed operations. The VA3091 designation implies special features for extreme conditions, such as heat treatment or coatings to resist environmental challenges like contamination or moisture.
Replaceable Bearings and Brands:
SKF:
- Model: NU 1018 M/C4VA3091
- SKF offers an exact replacement bearing with similar specifications, ensuring reliable performance in heavy-duty industrial applications.
FAG (Schaeffler Group):
- Model: NU1018-E-M1-C4
- Known for high-quality bearings, FAG provides a similar bearing with C4 clearance, machined brass cage, and high load-handling capabilities, perfect for turbines, gearboxes, and electric motors.
NSK:
- Model: NU1018MC4
- NSK’s cylindrical roller bearing is a direct replacement with a focus on precision and durability in demanding industrial environments.
NTN:
- Model: NU1018C4
- NTN provides a reliable alternative for applications requiring high radial load capacity, suitable for compressors, pumps, and gearboxes.
Timken:
- Model: NU1018EMC4
- Timken’s cylindrical roller bearing features high-performance materials and a robust design for heavy-duty industrial use, making it a strong replacement option.
Koyo:
- Model: NU1018C4FY
- Koyo’s bearing offers similar characteristics with excellent radial load-carrying capacity, ideal for electric motors and compressors.
NU 1018 M/C4VA3091 Bearing Cross Reference and Interchange
| Brand | Equivalent Bearing Model |
|---|---|
| Amigo | NU 1018 M/C4VA3091 |
| SKF | NU 1018 M/C4VA3091 |
| FAG (Schaeffler Group) | NU1018-E-M1-C4 |
| NSK | NU1018MC4 |
| NTN | NU1018C4 |
| Timken | NU1018EMC4 |
| Koyo | NU1018C4FY |
| NKE Austria | NU1018-E-MPA-C4 |
| NTN-SNR | NU1018EG15 |
The NU 1018 M/C4VA3091 Single Row Cylindrical Roller Bearing is designed with advanced features to perform efficiently in various industrial applications.
Choosing the Right Bearing
When selecting a cylindrical roller bearing, it’s essential to consider the performance, durability, and specific features that fit your machinery.
When to Choose NU 1018 M/C4VA3091 Bearings?
Electrical Insulation Requirements: The Amigo NU 1018 M/C4VA3091 is equipped with the Insocoat outer ring, which provides electrical insulation. This feature is critical for applications such as electric motors, generators, and turbines where electrical currents could potentially damage the bearing. If your machinery involves electrical exposure, this Amigo bearing is a superior choice over models from brands like FAG, NSK, and NTN, which lack electrical insulation.
High Radial Load Applications: With dynamic load ratings of 80.9 kN and static load ratings of 104 kN, the Amigo NU 1018 M/C4VA3091 performs exceptionally well under heavy radial loads. This makes it ideal for use in gearboxes, compressors, and turbines that require high durability and the ability to handle heavy, continuous loads.
Thermal Expansion Considerations: The C4 internal clearance of the Amigo NU 1018 M/C4VA3091 allows for additional space between the bearing components, making it better suited for applications where thermal expansion is likely. If your application operates under high temperatures, such as in turbines or high-speed motors, the extra clearance of the Amigo bearing ensures smoother performance over time.
Advantages of Amigo NU 1018 M/C4VA3091 Bearings Over Other Models
Superior Electrical Insulation: Unlike many competing brands such as FAG, NSK, and NTN, the Amigo NU 1018 M/C4VA3091 includes an Insocoat coating on the outer ring. This insulation protects against electric currents that could damage the bearing and the machinery. For users requiring electrical protection, the Amigo bearing stands out as the best choice.
Competitive Pricing: While brands like SKF and NTN are known for higher price points, Amigo offers a competitively priced solution without compromising on quality or performance. You get high-end features like C4 clearance, machined metal cages, and high load capacity at a more affordable price.
| Feature | Amigo NU 1018 M/C4VA3091 | SKF NU 1018 M/C4VA3091 | FAG NU1018-E-M1-C4 | NSK NU1018MC4 | NTN NU1018C4 |
|---|---|---|---|---|---|
| Bearing Type | Cylindrical Roller Bearing | Cylindrical Roller Bearing | Cylindrical Roller Bearing | Cylindrical Roller Bearing | Cylindrical Roller Bearing |
| Outer Ring Coating | Insocoat (Electrical Insulation) | Insocoat (Electrical Insulation) | No Insulation | No Insulation | No Insulation |
| Load Rating (Dynamic) | 80.9 kN | 80.9 kN | 79.6 kN | 78.8 kN | 79.0 kN |
| Load Rating (Static) | 104 kN | 104 kN | 102 kN | 100 kN | 102 kN |
| Radial Internal Clearance | C4 | C4 | C4 | C4 | C4 |
| Material | Bearing Steel | Bearing Steel | Bearing Steel | Bearing Steel | Bearing Steel |
| Cage Type | Machined Metal | Machined Metal | Brass | Brass | Brass |
| Reference Speed | 5,600 r/min | 5,600 r/min | 5,400 r/min | 5,300 r/min | 5,500 r/min |
| Limiting Speed | 5,600 r/min | 5,600 r/min | 5,400 r/min | 5,300 r/min | 5,500 r/min |
| Electrical Insulation | Yes | Yes | No | No | No |
| Price | Competitive | Higher | Moderate | Moderate | Higher |
| Availability | High (Direct from Amigo) | High | High | High | Moderate |
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Why Amigo NU 1018 M/C4VA3091 Bearings Are the Top Choice
We’ve been using the Amigo NU 1018 M/C4VA3091 bearings in our factory for over a year now, and I’m very impressed with their performance. These bearings feel just as solid and reliable as the SKF models we used to rely on. We’re using them in high-speed motors, and the Insocoat feature has been great at protecting against electrical erosion. Overall, these Amigo bearings have been fantastic, and I wouldn’t hesitate to recommend them to anyone looking for quality at a better price.
David S.
The Amigo NU 1018 M/C4VA3091 bearing is a top-quality product. We used to install SKF bearings for our electric motors, but after switching to Amigo, we haven’t noticed any difference in performance. The bearings handle heavy radial loads smoothly, and the electrical insulation feature is a game-changer for us. These bearings feel very similar to the big brands, but at a much more affordable price. I’m very pleased with their reliability and longevity.
Emily J.
I’ve been using Amigo NU 1018 M/C4VA3091 bearings in our gearboxes and they’ve performed as well as any SKF or FAG bearings we’ve used in the past. The bearings feel solid, handle high loads with ease, and the machined metal cage provides excellent stability. They’ve held up well under high-speed conditions, and the thermal clearance (C4) is perfect for our high-temperature applications. I’d say these are a great alternative to the more expensive brands.
Robert T.
I was initially skeptical about switching from SKF to Amigo NU 1018 M/C4VA3091 bearings, but after using them in our compressors, I’m happy with the decision. They feel just like the SKF bearings we’ve used before, with the same durability and load capacity. The Insocoat insulation is a huge plus in our application where we face electrical issues. I haven’t experienced any problems with these bearings, and for the price, they’re an outstanding choice.
Sarah W.
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