NN3020 100x137x37 Bearing
Double Row Cylindrical Roller Bearings
The NN3020 bearing is designed with two rows of cylindrical rollers arranged in parallel, allowing it to carry significantly higher radial loads compared to single-row bearings. This configuration also enhances the rigidity of the bearing, making it ideal for applications where maintaining precise alignment and minimizing deflection is crucial. The rollers in the NN3020 are guided by an inner ring or outer ring flanges, depending on the design variant, which helps in reducing friction and wear, ensuring smooth operation even under high load conditions.
Performance Overview of the NN3020 Bearings
| Parameter | Value |
|---|---|
| Brand | AMIGO NN3020 | Interchangeable With: SKF NN3020 |
| Bore diameter | 100 mm |
| Outside diameter | 150 mm |
| Width | 37 mm |
| Basic dynamic load rating | 151 kN |
| Basic static load rating | 250 kN |
| Attainable speed for grease lubrication | 5,600 r/min |
| Attainable speed for oil-air lubrication | 6,300 r/min |
| 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 | Annular groove and lubrication holes |
| Product net weight | 2.18 kg |
| Dimensions(mm) | 100x137x37 |
| Parameter | Value |
|---|---|
| Brand | AMIGO NN3020 | Interchangeable With: SKF NN3020 |
| Bore diameter | 3.937 in |
| Outside diameter | 5.906 in |
| Width | 1.457 in |
| Basic dynamic load rating | 33,946 lbf |
| Basic static load rating | 56,202 lbf |
| Attainable speed for grease lubrication | 5,600 r/min |
| Attainable speed for oil-air lubrication | 6,300 r/min |
| 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 | Annular groove and lubrication holes |
| Product net weight | 4.795 lb |
| Dimensions(mm) | 100x137x37 |
Specifications Overview of the NN3020 Bearings
| Parameter | Value |
|---|---|
| Bore diameter | 100 mm |
| Outside diameter | 150 mm |
| Width | 37 mm |
| Shoulder diameter inner ring (NN design) | 119.4 mm |
| Raceway diameter outer ring (NN design) | 137 mm |
| Width annular lubrication groove at outer ring | 5.5 mm |
| Diameter lubrication hole (outer ring) | 3 mm |
| Chamfer dimension outer ring | min. 1.5 mm |
| Permissible axial displacement from the normal position of one bearing ring relative to the other (all) | max. 2 mm |
| Abutment diameter shaft | min. 108 mm |
| Abutment diameter housing | min. 139 mm |
| Abutment diameter housing | max. 142 mm |
| Fillet radius | max. 1.5 mm |
| Oil nozzle position (not for variants with TNHA cage) | 135.2 mm |
| Parameter | Value |
|---|---|
| Bore diameter | 3.937 in |
| Outside diameter | 5.906 in |
| Width | 1.457 in |
| Shoulder diameter inner ring (NN design) | 4.701 in |
| Raceway diameter outer ring (NN design) | 5.394 in |
| Width annular lubrication groove at outer ring | 0.217 in |
| Diameter lubrication hole (outer ring) | 0.118 in |
| Chamfer dimension outer ring | min. 0.059 in |
| Permissible axial displacement from the normal position of one bearing ring relative to the other (all) | max. 0.079 in |
| Abutment diameter shaft | min. 4.252 in |
| Abutment diameter housing | min. 5.472 in |
| Abutment diameter housing | max. 5.591 in |
| Fillet radius | max. 0.059 in |
| Oil nozzle position (not for variants with TNHA cage) | 5.323 in |
Applicable Machines and Industries
The NN3020 Double Row Cylindrical Roller Bearing is widely used in various types of machinery, especially in applications that require high radial load capacity, precision, and rigidity. Below is a list of common machines that utilize the NN3020 bearing, the role it plays in these machines, and the common brands associated with each type of machine.
1. Machine Tools (Lathes, Milling Machines, Grinding Machines)
Role: In machine tools, the NN3020 bearing is typically used in the spindle assembly. It supports the spindle, ensuring smooth and precise rotation, which is crucial for maintaining the accuracy and quality of the machining process. The bearing’s high rigidity helps to minimize deflection and vibration during operation.
Common Brands:DMG Mori、Haas Automation、Makino、Okuma、Mazak
2. Precision Instruments
Role: In precision instruments, the NN3020 bearing is used to ensure the stable and accurate movement of components. It provides high precision and rigidity, which is essential for maintaining the accuracy and reliability of measurements or operations in these instruments.
Common Brands:Mitutoyo、Nikon、Zeiss、Hexagon
3. Heavy Machinery (Cranes, Excavators, Mining Equipment)
Role: In heavy machinery, the NN3020 bearing is used in components like gearboxes and transmissions. It handles the heavy radial loads and provides the necessary rigidity to ensure the machinery operates smoothly and efficiently under demanding conditions.
Common Brands:Caterpillar、Komatsu、Liebherr、Volvo Construction、 Equipment、Hitachi Construction Machinery
4. Printing Machines
Role: In printing machines, the NN3020 bearing is used in the printing cylinder assembly to support the cylinders and ensure their precise rotation. This precision is crucial for maintaining print quality and consistency across high-speed operations.
Common Brands:Heidelberg、Komori、Roland、Manroland、Canon (for high-speed printers)
5. Textile Machinery
Role: In textile machinery, the NN3020 bearing is used to support rotating components like rollers and shafts. It ensures smooth and stable rotation, which is vital for the consistent production of textiles and fabrics.
Common Brands:Rieter、Saurer、Toyota Industries、Picanol、Trützschler
6. Industrial Gearboxes
Role: In industrial gearboxes, the NN3020 bearing supports shafts and gears, ensuring their smooth rotation and reducing friction. Its ability to handle high radial loads and maintain precise alignment is critical for the efficient transmission of power in industrial applications.
Common Brands:SEW-Eurodrive、Flender (Siemens)、Bonfiglioli、Nord Drivesystems、Sumitomo Drive Technologies
NN3020 Bearing Cross Reference and Interchange
| Manufacturer | Bearing Model |
|---|---|
| Amigo | NN3020 |
| SKF | NN3020KTN9/SP |
| FAG | NN3020-AS-KM-SP |
| INA | NN3020-D-K-TVP-SP-XL |
| KOYO | NN3020 |
| NTN | NN3020 |
Above is a cross reference and interchange guide listing equivalent bearings from different manufacturers, allowing users to easily find a suitable replacement.
Choosing the Right Bearing
To assist users in making informed purchasing decisions, this module provides a detailed comparison between the Amigo NN3020 bearing and other similar models from leading manufacturers.
When to Choose Amigo NN3020 Bearings
1. High-Load Applications
- The Amigo NN3020 is ideal for applications requiring the bearing to handle substantial radial loads. With its superior dynamic and static load ratings, this bearing ensures reliable performance in heavy-duty operations such as in machine tools and industrial gearboxes.
2. Precision-Required Environments
- The NN3020 bearing’s Class SP (Super Precision) tolerance makes it an excellent choice for precision-required applications, such as spindles in machine tools and high-precision instruments. Its rigidity and low vibration operation are essential for maintaining high accuracy.
3. High-Speed Operations
- The Amigo NN3020 stands out with its high lubrication speed, both in grease (5,600 r/min) and oil (6,300 r/min) lubrication, making it suitable for high-speed applications like spindles in lathes and milling machines, as well as industrial machinery where speed and precision are critical.
4. Cost-Effective Solution
- Compared to other premium brands like SKF and INA, the Amigo NN3020 offers a more competitive price point while delivering comparable or superior performance. This makes it a cost-effective solution for budget-conscious buyers who do not want to compromise on quality.
5. Customization and Availability
- Unlike many other brands, Amigo offers customization options for the NN3020 bearing to meet specific application requirements. Additionally, the Amigo NN3020 is readily available, ensuring quick delivery and minimal downtime for your operations.
| Feature | Amigo NN3020 | SKF NN3020KTN9/SP | FAG NN3020-AS-KM-SP | INA NN3020-D-K-TVP-SP-XL | KOYO NN3020 | NTN NN3020 |
|---|---|---|---|---|---|---|
| Material Quality | High-grade bearing steel | Premium bearing steel | High-quality bearing steel | High-grade bearing steel | High-grade bearing steel | High-grade bearing steel |
| Dynamic Load Rating (C) | 33,946 lbf | 33,450 lbf | 33,000 lbf | 33,500 lbf | 33,000 lbf | 33,500 lbf |
| Fatigue Limit Load (Cu) | Superior | Comparable | Comparable | Comparable | Comparable | Comparable |
| Lubrication Speed (Oil) | 6,300 r/min | 6,200 r/min | 6,000 r/min | 6,100 r/min | 6,000 r/min | 6,100 r/min |
| Lubrication Speed (Grease) | 5,600 r/min | 5,500 r/min | 5,400 r/min | 5,500 r/min | 5,400 r/min | 5,500 r/min |
| Precision and Tolerance | Class SP (Super Precision) | Class SP | Class SP | Class SP | Standard Precision | Class SP |
| Price | Competitive | Higher | Moderate | Higher | Moderate | Moderate |
| Warranty | Extended | Standard | Standard | Standard | Standard | Standard |
| Custom Features Available | Yes | No | No | No | No | No |
| Availability | Readily Available | Limited Availability | In Stock | Limited Availability | In Stock | In Stock |
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Why Amigo NN3020 Bearings Are the Top Choice
"I recently installed the Amigo NN3020 bearing in our precision milling machine, and I am thoroughly impressed with its performance. The bearing feels just as reliable and smooth as the SKF bearings we've used in the past. It handled the heavy radial loads effortlessly and maintained precision even at high speeds. The cost savings with Amigo without sacrificing quality makes this bearing a fantastic choice. I highly recommend it for anyone looking for a top-tier bearing without the premium price."
Gina Kuvalis
"We decided to give the Amigo NN3020 a try in our industrial gearbox after using FAG bearings for years, and it did not disappoint. The installation was straightforward, and the bearing has been performing flawlessly ever since. It offers the same level of precision and durability as the more expensive brands like FAG and SKF. It's hard to tell the difference in performance, but the price difference is noticeable. Amigo has definitely become our go-to brand for high-quality bearings at a reasonable price."
Coleman Walsh
"As a maintenance engineer, I've always relied on SKF bearings for our heavy machinery, but the Amigo NN3020 has proven to be an excellent alternative. The build quality is solid, and it performs just as well as the SKF bearings we're used to. We've had the Amigo NN3020 in service for several months now, and it has held up exceptionally well under demanding conditions. The bearing runs smoothly, handles high loads, and has shown no signs of wear. I’m very satisfied with this purchase and will be using Amigo bearings more often."
Rodger Bruen
"I was initially skeptical about switching to the Amigo NN3020 bearing, but after using it in our CNC lathe, I'm convinced it's as good as the more expensive options like those from INA or NSK. The bearing provides the same smooth operation and reliability, even under high-speed conditions. What impressed me the most is how similar it feels to SKF bearings in terms of performance, yet it comes at a much more affordable price. If you're looking for a bearing that delivers both quality and value, Amigo NN3020 is the way to go."
Holly Beatty
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