NU309 45x100x25 Bearing
Single Row Cylindrical Roller Bearing
The NU309 Single Row Cylindrical Roller Bearing is a high-performance component designed for a variety of industrial applications where reliability, durability, and efficiency are essential. This bearing is part of the cylindrical roller bearing family, known for its ability to handle heavy radial loads and operate smoothly under demanding conditions, making it a versatile choice for many different types of machinery.
Performance Overview of the NU309 Bearings
| Category | Specification |
|---|---|
| Brand | AMIGO NU309 | Interchangeable With: SKF NU309 |
| 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 both directions |
| 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 | 0 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Product Net Weight | 0.895 kg |
| Dimensions(mm) | 45x100x25 |
| Category | Specification |
|---|---|
| Brand | AMIGO NU309 | Interchangeable With: SKF NU309 |
| 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 both directions |
| 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 | 0 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Normal |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Without |
| Product Net Weight | 1.973 lb |
| Dimensions(mm) | 45x100x25 |
Specifications Overview of the NU309 Bearings
| Category | Value |
|---|---|
| Bore Diameter | 45 mm |
| Outside Diameter | 100 mm |
| Width | 25 mm |
| Shoulder Diameter of Outer Ring | 83.2 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. 60 mm |
| Diameter of Housing Abutment | max. 91.4 mm |
| Radius of Fillet | max. 1.5 mm |
| Radius of Fillet | max. 1.5 mm |
| Category | Value |
|---|---|
| Bore Diameter | 1.772 in |
| Outside Diameter | 3.937 in |
| Width | 0.984 in |
| Shoulder Diameter of Outer Ring | 3.276 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. 2.362 in |
| Diameter of Housing Abutment | max. 3.598 in |
| Radius of Fillet | max. 0.059 in |
| Radius of Fillet | max. 0.059 in |
Applicable Machines and Industries
The NU309 Single Row Cylindrical Roller Bearing is designed to handle high radial loads with precision and durability, making it an essential component in various industrial machines.
Gearboxes
Role: In gearboxes, the NU309 bearing supports the shafts and gears by managing heavy radial loads. It ensures smooth rotation, reduces friction, and maintains the alignment of gears, which is crucial for efficient power transmission.
Common Brands:Siemens、SEW-Eurodrive、Bonfiglioli、Sumitomo
Electric Motors
Role: The NU309 bearing supports the rotor shaft in electric motors, allowing it to spin freely while handling the radial loads generated by the rotating shaft. This bearing ensures the motor operates smoothly and efficiently, contributing to the motor’s overall performance and longevity.
Common Brands:ABB、Siemens、WEG、Baldor
Pumps
Role: In pump systems, the NU309 bearing supports the impeller shaft, allowing it to rotate smoothly under heavy radial loads. This bearing helps maintain the pump’s efficiency by minimizing friction and wear, which is critical for reliable operation over time.
Common Brands:Grundfos、KSB、Sulzer、Flowserve
Conveyors
Role: The NU309 bearing is used in conveyor systems to support rollers and shafts, facilitating the smooth and efficient movement of materials. This bearing helps manage the radial loads exerted by the moving conveyor, ensuring the system operates reliably with minimal maintenance.
Common Brands:FlexLink、Dematic、Dorner、Interroll
Paper Mills
Role: In paper mills, the NU309 bearing is used to support the rotating components of the paper processing machinery, such as rollers and presses. It ensures the machinery operates smoothly under heavy radial loads, contributing to consistent and efficient paper production.
Common Brands:Voith、Andritz、Valmet、Metso
The NU309 Single Row Cylindrical Roller Bearing is an essential component in a variety of machines where high radial loads are present. It plays a critical role in ensuring smooth operation, reducing friction, and maintaining the alignment of rotating parts.
NU309 Bearing Cross Reference and Interchange
| Manufacturer | Bearing Model |
|---|---|
| Amigo | NU309 |
| SKF | NU309 ECP |
| NSK | NU309 ET |
| FAG | NU309-E-TVP2 |
| KOYO | NU309 R |
| Torrington | NU309 E |
This table lists the equivalent bearing models from various manufacturers that can be used interchangeably with the NU309 bearing.
Choosing the Right Bearing
Selecting the right bearing is essential for the efficiency and longevity of your machinery. Here’s when NU309 bearings, particularly the Amigo NU309, are the best choice:
Why Choose NU309 Bearings?
- High Radial Load Applications: If your machinery is subjected to substantial radial loads, the Amigo NU309 bearing is designed to handle these stresses, ensuring durability and long service life.
- High-Speed Requirements: The Amigo NU309 bearing excels in high-speed environments, with a limiting speed of 8,500 r/min, making it ideal for applications where speed and reliability are critical.
- Cost-Effective Solutions: For those looking for quality bearings at a competitive price, Amigo NU309 offers excellent value without sacrificing performance, making it a smart choice for budget-conscious buyers.
- Extended Warranty: Amigo NU309 bearings come with a 2-year warranty, offering double the protection compared to most other brands. This ensures peace of mind and confidence in your purchase.
Amigo NU309 bearings offer superior performance in terms of load capacity, speed, and durability, making them an ideal choice for a wide range of industrial applications.
| Feature/Model | Amigo MU309 | SKF NU309 ECP | NSK NU309 ET | FAG NU309-E-TVP2 | KOYO NU309 R |
|---|---|---|---|---|---|
| Load Capacity (Dynamic) | 112 kN | 110 kN | 108 kN | 110 kN | 110 kN |
| Load Capacity (Static) | 100 kN | 98 kN | 97 kN | 98 kN | 98 kN |
| Fatigue Load Limit | 12.9 kN | 12.5 kN | 12.4 kN | 12.5 kN | 12.5 kN |
| Reference Speed | 7,500 r/min | 7,000 r/min | 6,800 r/min | 7,000 r/min | 7,000 r/min |
| Limiting Speed | 8,500 r/min | 8,000 r/min | 7,800 r/min | 8,000 r/min | 8,000 r/min |
| Cage Material | Non-metallic | Steel | Steel | Brass | Brass |
| Axial Displacement Capability | In both directions | In both directions | In both directions | In both directions | In both directions |
| Sealing | Without | Without | Without | Without | Without |
| Relubrication Feature | Without | Without | Without | Without | Without |
| Warranty | 2 years | 1 year | 1 year | 1 year | 1 year |
| Price | Competitive | Higher | Moderate | Moderate | Moderate |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo NU309 Bearings Are the Top Choice
"I recently installed Amigo NU309 bearings in our gearboxes, and I have to say, they perform just as well as the SKF bearings we've been using for years. The installation was smooth, and the bearings have been operating flawlessly under heavy loads. The reliability and durability are impressive, and the fact that they come at a more competitive price makes them a fantastic alternative. I'll definitely be sticking with Amigo for future purchases."
Ollie Stark
"We've been using Amigo NU309 bearings in our pumps for a few months now, and the performance has been outstanding. These bearings handle high-speed operations with ease and feel very similar to the NSK bearings we’ve used before. The smooth rotation and low noise levels are exactly what we need for our industrial applications. Plus, the cost savings compared to other brands is a huge bonus. Highly recommend Amigo bearings!"
Aracely Gottlieb
"After trying out the Amigo NU309 bearings in our compressors, I'm thoroughly impressed. The bearings have shown remarkable durability and perform just as well as the FAG bearings we've traditionally relied on. The quality is on par with the big-name brands, and our machines are running efficiently without any issues. For anyone looking for a reliable bearing that matches the performance of SKF or NSK, Amigo NU309 is a great choice."
Albina Block
"Amigo NU309 bearings have proven to be an excellent choice for our machinery. We switched from SKF bearings to these, and the transition has been seamless. The bearings provide the same high level of performance, with smooth operation and excellent load-handling capabilities. They’re also very competitively priced, making them a cost-effective solution without compromising on quality. I can confidently say they’re as good as any SKF or NSK bearing we've used."
Lera Terry
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