NJ309 45x100x25 Bearing
Single Row Cylindrical Roller Bearing
The NJ309 Single Row Cylindrical Roller Bearing is a versatile and robust bearing designed to support heavy radial loads while providing high precision and reliability in a wide range of industrial applications. Engineered with precision, the NJ309 bearing is part of the cylindrical roller bearing family, known for their ability to manage high radial loads and moderate axial loads.
Performance Overview of the NJ309 Bearings
| Specifications | Details |
|---|---|
| Brand | AMIGO NJ309 | Interchangeable With: SKF NJ309 |
| Bore diameter | 45 mm |
| Outside diameter | 100 mm |
| Width | 25 mm |
| Basic dynamic load rating | 112 kN |
| Basic static load rating | 100 kN |
| Reference speed | 7,500 r/min |
| Limiting speed | 8,500 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 | Machined metal |
| 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 |
| Logistics | |
| Product net weight | 1.06 kg |
| Dimensions(mm) | 45x100x25 |
| Specifications | Details |
|---|---|
| Brand | AMIGO NJ309 | Interchangeable With: SKF NJ309 |
| Bore Diameter | 1.772 in |
| Outside Diameter | 3.937 in |
| Width | 0.984 in |
| Basic Dynamic Load Rating | 25,179 lbf |
| Basic Static Load Rating | 22,481 lbf |
| Reference Speed | 7,500 r/min |
| Limiting Speed | 8,500 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 | Machined metal |
| 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 | 2.335 lb |
| Relubrication feature | Without |
| Logistics | |
| Product net weight | 1.06 kg |
| Dimensions(mm) | 45x100x25 |
Specifications Overview of the NJ309 Bearings
| Description | Value |
|---|---|
| Bore diameter | 45 mm |
| Outside diameter | 100 mm |
| Width | 25 mm |
| Raceway diameter of inner ring | 58.5 mm |
| Chamfer dimension | min. 1.5 mm |
| Chamfer dimension | min. 1.5 mm |
| Permissible axial displacement | max. 1.7 mm |
| Diameter of spacer sleeve | min. 54 mm |
| Diameter of spacer sleeve | max. 56 mm |
| Diameter of shaft abutment | min. 67 mm |
| Diameter of housing abutment | max. 91.4 mm |
| Radius of fillet | max. 1.5 mm |
| Description | Description |
|---|---|
| Bore diameter | 1.772 in |
| Outside diameter | 3.937 in |
| Width | 0.984 in |
| Raceway diameter of inner ring | 2.303 in |
| Chamfer dimension | min. 0.059 in |
| Chamfer dimension | min. 0.059 in |
| Permissible axial displacement | max. 0.067 in |
| Diameter of spacer sleeve | min. 2.126 in |
| Diameter of spacer sleeve | max. 2.205 in |
| Diameter of shaft abutment | min. 2.638 in |
| Diameter of housing abutment | max. 3.598 in |
| Radius of fillet | max. 0.059 in |
Applicable Machines and Industries
The NJ309 Single Row Cylindrical Roller Bearing is widely applicable across various machines and industries due to its high load-carrying capacity, durability, and precision. Below is a summary of the typical machines and industries where the NJ309 bearing is commonly used:
Applicable Machines:
- Gearboxes:Used in industrial gearboxes for transmitting power and motion efficiently.
- Electric Motors:Supports the rotor in electric motors, enabling smooth and reliable operation.
- Pumps:Integral to the operation of pumps, particularly in maintaining alignment and reducing wear.
- Compressors:Essential for ensuring the efficient functioning of compressors by handling radial loads.
- Conveyors:Supports conveyor belts and rollers, ensuring smooth movement and operation in material handling systems.
- Cranes and Hoists:Used in the lifting mechanisms of cranes and hoists to support heavy loads.
Applicable Industries:
- Manufacturing:Widely used in various manufacturing processes where machinery needs to handle heavy loads and operate continuously.
- Automotive:Key component in automotive systems, especially in transmission and drivetrain applications.
- Construction:Utilized in construction machinery like excavators, bulldozers, and cranes for reliable operation under tough conditions.
- Mining:Essential in mining operations where equipment needs to handle large forces and endure harsh environments.
The NJ309 bearing’s versatility makes it a go-to solution in various mechanical applications, providing the necessary support and reliability across a wide range of industries.
NJ309 Bearing Cross Reference and Interchange
| Manufacturer | Bearing Model |
|---|---|
| Amigo | NJ309 |
| SKF | NJ309 ECP |
| NTN | NJ309 |
| MRC | MR309G |
This table provides a quick reference to equivalent bearing models from different manufacturers that can be used interchangeably with the NJ309 bearing. It ensures that you can find a replacement bearing from another trusted brand if the preferred model is unavailable.
Choosing the Right Bearing
Choosing the right bearing is critical to the performance and longevity of your machinery. Here’s when NJ309 bearings are the best choice:
Why Choose NJ309 Bearings?
- High Load Applications: If your application involves heavy radial loads, NJ309 bearings, especially Amigo NJ309, offer superior dynamic and static load ratings, ensuring durability and reliability under stress.
- High-Speed Requirements: For applications requiring high rotational speeds, the Amigo NJ309 bearing’s high limiting speed makes it ideal, outperforming many competitors.
- Long-Term Reliability: Amigo NJ309 bearings come with a 2-year warranty, providing extra assurance and support compared to other brands.
- Cost-Effective Solution: While maintaining high performance, Amigo NJ309 bearings are offered at a competitive price point, making them an excellent value for money.
When selecting a bearing, it’s essential to match the bearing’s specifications with your application’s requirements.Whether you’re looking for a bearing for high-load applications or need reliable, long-term performance, the Amigo NJ309 bearing is the best option available.
| Feature/Model | Amigo NJ309 | SKF NJ309 ECP | NTN NJ309 | MRC MR309G |
|---|---|---|---|---|
| Load Capacity (Dynamic) | 25,179 lbf | 24,500 lbf | 24,700 lbf | 24,600 lbf |
| Load Capacity (Static) | 22,481 lbf | 22,000 lbf | 22,100 lbf | 22,000 lbf |
| Reference Speed | 7,500 r/min | 7,300 r/min | 7,200 r/min | 7,200 r/min |
| Limiting Speed | 8,500 r/min | 8,000 r/min | 8,200 r/min | 8,000 r/min |
| Cage Material | Non-metallic | Steel | Steel | Brass |
| Axial Displacement Capability | In one direction | In one direction | In one direction | In one direction |
| Sealing | Without | Without | Without | Without |
| Relubrication Feature | Without | Without | Without | Without |
| Warranty | 2 years | 1 year | 1 year | 1 year |
| Price | Competitive | Higher | Moderate | Moderate |
Recommended Products for Optimal Performance
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Why Amigo NJ309 Bearings Are the Top Choice
"I've been using Amigo NJ309 bearings in my machinery for a few months now, and I must say, they perform just as well as the SKF bearings I've used in the past. The build quality is excellent, and they handle the heavy loads in our gearboxes without any issues. The installation was smooth, and they operate quietly, which is a huge plus. I highly recommend these bearings to anyone looking for a reliable alternative to the big brands."
Josue Nicolas
"I was initially skeptical about switching from the more expensive SKF bearings to Amigo NJ309, but I’m glad I did. These bearings are fantastic! They feel very similar in quality and performance to the SKF bearings, but at a much more reasonable price. We've installed them in several of our electric motors, and they’ve been running flawlessly. I’ll definitely be purchasing more for our other equipment."
Eveline Hane
"After trying out the Amigo NJ309 bearings, I'm thoroughly impressed. They hold up very well under heavy loads and have been running smoothly in our industrial pumps. The performance is on par with the NTN bearings we've used before, but the cost savings with Amigo is significant. If you’re looking for bearings that offer the same reliability as the top brands, Amigo is a great choice."
Aurelia Frami
"I've used many different bearings over the years, including MRC and SKF, but the Amigo NJ309 bearings are right up there in terms of quality. We’ve installed them in our construction equipment, and they’ve been performing beautifully. The bearings are durable, easy to install, and the price is unbeatable. They feel just as sturdy and well-made as the other brands I’ve tried. I highly recommend giving them a try!"
Laverne Glover
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