NJ211 55x100x21 Bearing
Single Row Cylindrical Roller Bearing
The NJ211 Single Row Cylindrical Roller Bearing is engineered for high-load capacity and efficient performance. It excels in supporting heavy radial loads and moderate axial loads in one direction. Its separable inner ring simplifies installation and maintenance. Made from durable materials, it ensures longevity and smooth operation with minimal friction, making it ideal for gearboxes, motors, and pumps. The NJ211 is a dependable choice for enhancing mechanical systems.
Performance Overview of the NJ211 Bearings
| Details | Specifications |
|---|---|
| Brand | AMIGO NJ211 | Interchangeable With: SKF NJ211 |
| Bore diameter | 55 mm |
| Outside diameter | 100 mm |
| Width | 21 mm |
| Basic dynamic load rating | 96.5 kN |
| Basic static load rating | 95 kN |
| Reference speed | 7,500 r/min |
| Limiting speed | 8,000 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In one direction |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Non-metallic |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 1 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 0.667 kg |
| Details | Specifications |
|---|---|
| Brand | AMIGO NJ211 | Interchangeable With: SKF NJ211 |
| Bore diameter | 2.165 in |
| Outside diameter | 3.937 in |
| Width | 0.827 in |
| Basic dynamic load rating | 21,694 lbf |
| Basic static load rating | 21,357 lbf |
| Reference speed | 7,500 r/min |
| Limiting speed | 8,000 r/min |
| Bearing part | Complete bearing |
| Axial displacement capability | In one direction |
| Number of rows | 1 |
| Locating feature, bearing outer ring | None |
| Bore type | Cylindrical |
| Cage | Non-metallic |
| Number of flanges, outer ring | 2 |
| Number of flanges, inner ring | 1 |
| Loose flange | None |
| Radial internal clearance | CN |
| Tolerance class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication feature | Without |
| Product net weight | 1.471 lb |
Specifications Overview of the NJ211 Bearings
| Specifications | Details |
|---|---|
| Bore diameter | 55 mm |
| Outside diameter | 100 mm |
| Width | 21 mm |
| Shoulder diameter of inner ring | ≈ 70.8 mm |
| Shoulder diameter of outer ring | ≈ 85.68 mm |
| Raceway diameter of inner ring | 66 mm |
| Chamfer dimension r1,2 | min. 1.5 mm |
| Chamfer dimension r3,4 | min. 1.1 mm |
| Permissible axial displacement | max. 1 mm |
| Diameter of spacer sleeve | min. 63 mm |
| Diameter of spacer sleeve | max. 64 mm |
| Diameter of shaft abutment | min. 73 mm |
| Diameter of housing abutment | max. 91.4 mm |
| Radius of fillet | max. 1.5 mm |
| Specifications | Details |
|---|---|
| Bore diameter | 2.165 in |
| Outside diameter | 3.937 in |
| Width | 0.827 in |
| Shoulder diameter of inner ring | ≈ 2.787 in |
| Shoulder diameter of outer ring | ≈ 3.373 in |
| Raceway diameter of inner ring | 2.598 in |
| Chamfer dimension r1,2 | min. 0.059 in |
| Chamfer dimension r3,4 | min. 0.043 in |
| Permissible axial displacement | max. 0.039 in |
| Diameter of spacer sleeve | min. 2.48 in |
| Diameter of spacer sleeve | max. 2.52 in |
| Diameter of shaft abutment | min. 2.874 in |
| Diameter of housing abutment | max. 3.598 in |
| Radius of fillet | max. 0.059 in |
Applicable Machines and Industries
Automotive Industry:
- Gearbox Assemblies: Essential for smooth transmission in vehicles like the Ford F-150 and Honda Accord, ensuring efficient power delivery and durability.
- Steering Systems: Used in BMW and Mercedes-Benz models for precise steering control and enhanced driver feedback.
Electric Motors:
- Rotor Shaft Support: Critical for the operation of ABB and Siemens motors, providing stability and reducing wear during high-speed rotation.
- Cooling Fans: Used in WEG and Baldor electric motors, ensuring effective cooling and preventing overheating during continuous operation.
Industrial Pumps:
- Shaft Support: Vital in Grundfos and KSB pumps, maintaining alignment and smooth operation under varying loads.
- Impeller Stabilization: Used in Sulzer and Flowserve pumps, ensuring efficient fluid movement and reducing vibration during operation.
Textile Machinery:
- Spindle Assemblies: Crucial in Rieter and Saurer machines, allowing for precise and high-speed thread production with minimal friction.
- Loom Components: Employed in Picanol and Toyota textile machines, ensuring reliable and consistent weaving performance.
Paper Manufacturing:
- Roller Support: Essential for Voith and Valmet paper machines, enabling smooth and continuous operation under heavy loads.
- Drying Cylinders: Used in Andritz and Toscotec machines, providing stable rotation and effective moisture removal during paper production.
NJ211 Bearing Cross Reference and Interchange
| Brand | Bearing Model |
|---|---|
| Amigo | NJ211 |
| MRC | MR211G |
| SKF | NJ211 ECP |
| NTN | NJ211 |
| NSK | NJ211W |
| FAG | NJ211E-TVP2 |
| Timken | NJ211EM |
| Koyo | NJ211 |
| Nachi | NJ211 |
This table summarizes the bearing cross-reference and interchange guide for the NJ211 Single Row Cylindrical Roller Bearing. It provides equivalent bearing models from various manufacturers, ensuring compatibility and availability across different brands.
Choosing the Right Bearing
When comparing the Amigo NJ211 bearing to other similar models, several key advantages make it the superior choice for various applications:
When to Choose the Amigo NJ211 Bearing
Superior Operating Speed: The Amigo NJ211 bearing supports an operating speed of up to 8,000 r/min, making it ideal for high-speed applications where consistent performance is crucial. This is higher than the typical operating speed of other comparable models like the SKF NJ211 ECP and NTN NJ211.
Durable Non-Metallic Cage: The Amigo NJ211 features a non-metallic cage that is both lightweight and durable, offering a lower friction coefficient compared to metallic cages. This results in reduced wear and tear, extending the bearing’s lifespan.
Competitive Pricing: Despite offering similar or superior features to its competitors, the Amigo NJ211 is priced more competitively, making it an excellent choice for cost-conscious buyers without sacrificing quality.
Optimal for Heavy Radial Loads: Like its counterparts, the Amigo NJ211 excels in supporting heavy radial loads, which is essential for applications in industrial machinery, automotive components, and more.
Availability: The Amigo NJ211 is widely available, ensuring that you can easily source replacements or additional units when needed, reducing potential downtime.
With its superior speed, durability, and competitive pricing, the Amigo NJ211 bearing is the perfect choice for those seeking reliability without compromise. Whether for high-speed applications or heavy-duty use, the Amigo NJ211 offers exceptional value, making it the ideal solution for various industrial needs.
| Feature | Amigo NJ211 | SKF NJ211 ECP | NTN NJ211 | FAG NJ211E-TVP2 | Timken NJ211EM |
|---|---|---|---|---|---|
| Radial Load Capacity | High | High | High | High | High |
| Axial Load Capacity | Moderate (One Direction) | Moderate (One Direction) | Moderate (One Direction) | Moderate (One Direction) | Moderate (One Direction) |
| Operating Speed | Up to 8,000 r/min | Up to 7,500 r/min | Up to 7,500 r/min | Up to 7,500 r/min | Up to 7,500 r/min |
| Bearing Material | High-Quality Steel | High-Quality Steel | High-Quality Steel | High-Quality Steel | High-Quality Steel |
| Cage Material | Non-metallic (Lightweight & Durable) | Steel | Steel | Steel | Steel |
| Precision | High (ISO Class CN) | High (ISO Class CN) | High (ISO Class CN) | High (ISO Class CN) | High (ISO Class CN) |
| Price | Competitive | Higher | Moderate | Higher | Moderate |
| Availability | Widely Available | Widely Available | Widely Available | Widely Available | Widely Available |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo NJ211 Bearings Are the Top Choice
I've been using the Amigo NJ211 Bearing in our heavy-duty machinery, and the performance has been outstanding. The bearing feels just as solid and reliable as the bearings we've used from another brand in the past. Installation was smooth, and the machine runs quieter and more efficiently. I’m very impressed with how well it handles the load, and it’s definitely a top-notch product.
Jenna J Trivett
Switching to the Amigo NJ211 Bearing was a great decision. It’s comparable to the Timken bearings we previously used, but at a better price point. The fit and finish are excellent, and we haven’t noticed any difference in performance compared to the more expensive brands. I’m confident that these bearings will hold up just as well over time.
Jose N Lee
After installing the Amigo NJ211 Bearing in our conveyor system, I immediately noticed the difference. The bearing operates just as smoothly as the NTN models we've used before, and I was pleasantly surprised by its durability. It's clear that Amigo has produced a bearing that matches the quality of leading brands without the premium price. Highly recommended!
Lorraine M Flores
We recently replaced all our old bearings with the Amigo NJ211, and the results have been fantastic. The bearings have performed on par with the FAG NJ211E-TVP2 we’ve used previously. They handle the heavy loads and high speeds in our industrial pumps with ease. It's great to find a product that offers such high quality at a more affordable cost. Definitely a go-to for future replacements.
Daniel B Reeves
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