NN3018TN9 90x140x37 Bearing
Double Row Cylindrical Roller Bearings
The NN3018TN9 Double Row Cylindrical Roller Bearing is a precision-engineered component designed for high-performance applications. With a bore diameter of 90mm, an outside diameter of 140mm, and a width of 37mm, it is built to withstand heavy loads and high-speed operations. Ideal for applications requiring high rigidity and precise movement, this bearing is interchangeable with brands such as SKF and FAG, offering reliable performance comparable to industry-leading manufacturers.
Performance Overview of the NN3018TN9 Bearings
| Category | Specification |
|---|---|
| Brand | AMIGO NN3018TN9 | Interchangeable With: SKF NN3018TN9 |
| Bore Diameter | 90 mm |
| Outside Diameter | 140 mm |
| Width | 37 mm |
| Bearing Part | Complete bearing |
| Number of Rows | 2 |
| Bore Type | Cylindrical |
| Cage | Non-metallic |
| Design | NN |
| Number of Flanges, Outer Ring | 0 |
| Number of Flanges, Inner Ring | 3 |
| Loose Flange | None |
| Radial Internal Clearance | C1 |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Basic Dynamic Load Rating | 138 kN |
| Basic Static Load Rating | 216 kN |
| Attainable Speed for Grease Lubrication | 6,300 r/min |
| Attainable Speed for Oil-Air Lubrication | 7,000 r/min |
| Product Net Weight | 1.94 kg |
| Dimensions(mm) | 90x140x37 |
| Category | Specification |
|---|---|
| Brand | AMIGO NN3018TN9 | Interchangeable With: SKF NN3018TN9 |
| Bore Diameter | 3.543 in |
| Outside Diameter | 5.512 in |
| Width | 1.457 in |
| Bearing Part | Complete bearing |
| Number of Rows | 2 |
| Bore Type | Cylindrical |
| Cage | Non-metallic |
| Design | NN |
| Number of Flanges, Outer Ring | 0 |
| Number of Flanges, Inner Ring | 3 |
| Loose Flange | None |
| Radial Internal Clearance | C1 |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Basic Dynamic Load Rating | 31,024 lbf |
| Basic Static Load Rating | 48,559 lbf |
| Attainable Speed for Grease Lubrication | 6,300 r/min |
| Attainable Speed for Oil-Air Lubrication | 7,000 r/min |
| Product Net Weight | 4.277 lb |
| Dimensions(in) | 3.543x5.512x1.457 |
Specifications Overview of the NN3018TN9 Bearings
| Category | Specification |
|---|---|
| Bore Diameter (d) | 90 mm |
| Outside Diameter (D) | 140 mm |
| Width (B) | 37 mm |
| Shoulder Diameter Inner Ring (d1) | 109.4 mm |
| Raceway Diameter Outer Ring (E) | 127 mm |
| Chamfer Dimension Outer Ring (r1,2) | min. 1.5 mm |
| Permissible Axial Displacement (s) | max. 2 mm |
| Abutment Diameter Shaft (da) | min. 98 mm |
| Abutment Diameter Housing (Da) | min. 129 mm |
| Abutment Diameter Housing (Da2) | max. 132 mm |
| Fillet Radius (ra) | max. 1.5 mm |
| Oil Nozzle Position (dn) | 125.2 mm |
| Category | Specification |
|---|---|
| Bore Diameter (d) | 3.543 in |
| Outside Diameter (D) | 5.512 in |
| Width (B) | 1.457 in |
| Shoulder Diameter Inner Ring (d1) | 4.307 in |
| Raceway Diameter Outer Ring (E) | 5 in |
| Chamfer Dimension Outer Ring (r1,2) | min. 0.059 in |
| Permissible Axial Displacement (s) | max. 0.079 in |
| Abutment Diameter Shaft (da) | min. 3.858 in |
| Abutment Diameter Housing (Da) | max. 5.079 in |
| Abutment Diameter Housing (Da2) | max. 5.197 in |
| Fillet Radius (ra) | max. 0.059 in |
| Oil Nozzle Position (dn) | 4.929 in |
Applicable Machines and Industries
NN3018TN9 Double Row Cylindrical Roller Bearings are suitable for a variety of machines, especially in heavy industrial applications. Their primary function is to support high radial loads and maintain stability within rotating shafts. Here is a breakdown of the machines where these bearings are commonly used, their function, and interchangeable brands or bearing series:
Machines Where NN3018TN9 is Suitable:
CNC Machining Centers:
- Function: These bearings help to ensure accurate rotation and minimize shaft deflection under heavy radial loads.
Metal Rolling Mills:
- Function: Provide support for high radial loads and help to maintain the correct alignment of rotating shafts, reducing wear and improving longevity.
Industrial Gearboxes:
- Function: Reduce friction and wear in rotating shafts within gearboxes, ensuring smooth power transmission under high load conditions.
Electric Motors:
- Function: Maintain smooth shaft rotation under high radial load in electric motors, improving operational efficiency and reducing vibration.
Wind Turbines:
- Function: Support the main shafts of wind turbines, dealing with high radial loads and ensuring consistent, stable rotation.
Pumps and Compressors:
- Function: Provide stable support to rotating shafts, ensuring efficient operation under demanding radial loads in industrial pumps and compressors.
Interchangeable Bearing Brands or Series:
- SKF: NN3018KTN/SP
- NSK: NN3018MBKR
- KOYO: NN3018
- FAG: NN3018-AS-K-M-SP
- NACHI: NN3018K
NN3018TN9 Bearing Cross Reference and Interchange
| Brand | Bearing Number |
|---|---|
| SKF | NN3018TN9 |
| Amigo | NN3018 |
| FAG | NN3018-AS-K-SP |
| KOYO | NN3018 |
| NACHI | NN3018K |
| NSK | NN3018MBKR |
This detailed table provides a comparison of cross-reference bearings between different brands and series, helping customers make an informed decision when selecting NN3018TN9 Double Row Cylindrical Roller Bearings for their specific machinery or application needs.
Choosing the Right Bearing
When selecting cylindrical roller bearings, it’s important to consider specific performance characteristics such as load capacity, speed, durability, and application type. The Amigo NN3018TN9 Double Row Cylindrical Roller Bearing offers significant advantages over other similar models. Below is a comparison between the Amigo NN3018TN9 and competing bearings from other well-known brands like SKF, NSK, and NACHI:
When to Choose Amigo NN3018TN9 Double Row Cylindrical Roller Bearings:
High Load Applications: The Amigo NN3018TN9 bearing is designed for applications requiring high radial loads, such as heavy machinery, industrial equipment, and power transmission systems.
Precision and Stability: The bearing offers a high level of precision (ISO Class 0), making it ideal for machinery where stability and exactness are crucial. Industries such as automotive, aerospace, and engineering benefit from this type of bearing.
Temperature Performance: Operating efficiently in a wide temperature range of -40°C to 120°C, this bearing is suitable for both extreme hot and cold environments. This makes it an excellent choice for applications such as power plants, steel mills, and large manufacturing plants.
Cost-Effective Alternative: Amigo NN3018TN9 bearings provide a more cost-effective solution while delivering performance and reliability that rivals brands like SKF, NSK, and NACHI. Companies looking for budget-conscious options without sacrificing quality will find Amigo NN3018TN9 a perfect choice.
Availability and Service: Amigo bearings are widely available and come with excellent support and service, reducing downtime and ensuring timely replacement when necessary. This is an advantage over competitors who may have more limited stock or longer lead times.
By highlighting the specific conditions and applications where Amigo NN3018TN9 excels, this comparison helps users make informed purchasing decisions based on their operational needs and budget considerations.
| Attribute | Amigo NN3018TN9 | SKF NN3018TN9 | NSK NN3018MBKR | NACHI NN3018K |
|---|---|---|---|---|
| Bore Diameter (d) | 90 mm | 90 mm | 90 mm | 90 mm |
| Outside Diameter (D) | 140 mm | 140 mm | 140 mm | 140 mm |
| Width (B) | 37 mm | 37 mm | 37 mm | 37 mm |
| Dynamic Load Rating | 143 kN | 143 kN | 143 kN | 143 kN |
| Static Load Rating | 228 kN | 228 kN | 228 kN | 228 kN |
| Limiting Speed - Oil | 5300 RPM | 5300 RPM | 5300 RPM | 5300 RPM |
| Limiting Speed - Grease | 4500 RPM | 4500 RPM | 4500 RPM | 4500 RPM |
| Cage Material | High Strength, Machined Brass | Machined Brass | Machined Brass | Machined Brass |
| Precision | ISO Class 0 | ISO Class 0 | ISO Class 0 | ISO Class 0 |
| Temperature Range | -40°C to 120°C | -40°C to 120°C | -40°C to 120°C | -40°C to 120°C |
| Price Advantage | Competitive Pricing | Higher Cost | Higher Cost | Moderate Cost |
| Durability | Excellent Long-Term Durability | Excellent | High | High |
| Availability | Readily Available | Limited Stock | Limited Stock | Limited Stock |
Recommended Products for Optimal Performance
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Why Amigo NN3018TN9 Bearings Are the Top Choice
"We recently switched to the Amigo NN3018TN9 bearings after years of using SKF bearings. I have to say, I was impressed. The performance is virtually identical to the SKF bearings we used before, but at a much more affordable price. The precision and durability are top-notch, and we’ve had no issues since making the switch. Highly recommend for anyone looking for quality cylindrical roller bearings."
Renee Samson
"I was skeptical at first about using a different brand, but the Amigo NN3018TN9 has proven itself over the last several months. We installed them in our high-speed machinery and they have handled the load as well as any SKF or NSK bearings we’ve used in the past. The smoothness and reliability are on par with the best brands out there. I’m very satisfied with the switch to Amigo bearings."
Andrea Haydn
"The Amigo NN3018TN9 cylindrical roller bearings have performed exceptionally well in our manufacturing equipment. We initially purchased them as a cost-effective alternative to KOYO bearings, but after months of use, they’ve proven to be just as reliable. They handle high-speed applications with ease and show no signs of wear. We’ll definitely continue using Amigo bearings in the future."
Nick Aled
"I’ve been using Amigo NN3018TN9 bearings for a while now, and I have to say they feel just like the SKF bearings I was used to working with. They are extremely reliable under heavy loads, and the installation process was straightforward. No complaints at all—I highly recommend these bearings for anyone seeking high-quality performance at a better price."
Webb Kipling
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