N 309 45x100x25 Bearing
Single Row Cylindrical Roller Bearing
The N 309 Single Row Cylindrical Roller Bearing is a vital component in various industrial applications, offering robust performance and reliability in environments where high radial loads are present. As a single row cylindrical roller bearing, the N 309 is specifically designed to manage large radial loads while operating at moderate speeds, making it an essential choice for many heavy-duty machinery and equipment.
Performance Overview of the N 309 Bearings
| Dimensions | Specification | |
|---|---|---|
| Brand | AMIGO N 309 | Interchangeable With: SKF N 309 | |
| 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 | 0 | |
| Number of Flanges, Inner Ring | 2 | |
| Loose Flange | None | |
| Radial Internal Clearance | CN | |
| Tolerance Class | Normal | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication Feature | Without | |
| Product Net Weight | 0.877 kg | |
| Dimensions(mm) | 45x100x25 |
| Dimensions | Specification | |
|---|---|---|
| Brand | AMIGO N 309 | Interchangeable With: SKF N 309 | |
| 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 | 0 | |
| Number of Flanges, Inner Ring | 2 | |
| Loose Flange | None | |
| Radial Internal Clearance | CN | |
| Tolerance Class | Normal | |
| Coating | Without | |
| Sealing | Without | |
| Lubricant | None | |
| Relubrication Feature | Without | |
| Product Net Weight | 1.933 lb | |
| Dimensions(mm) | 45x100x25 |
Specifications Overview of the N 309 Bearings
| Dimensions | Measurement | |
|---|---|---|
| Bore Diameter | 45 mm | |
| Outside Diameter | 100 mm | |
| Width | 25 mm | |
| Raceway Diameter of Outer Ring | 88.5 mm | |
| Chamfer Dimension (r1,2) | min. 1.5 mm | |
| Chamfer Dimension (r3,4) | min. 1.5 mm | |
| Permissible Axial Displacement (s) | max. 1.7 mm |
| Dimensions | Measurement | |
|---|---|---|
| Bore Diameter | 1.772 in | |
| Outside Diameter | 3.937 in | |
| Width | 0.984 in | |
| Raceway Diameter of Outer Ring | 3.484 in | |
| Chamfer Dimension (r1,2) | min. 0.059 in | |
| Chamfer Dimension (r3,4) | min. 0.059 in | |
| Permissible Axial Displacement (s) | max. 0.067 in |
Applicable Machines and Industries
The N309 Single Row Cylindrical Roller Bearing is widely used in various types of machinery, particularly in industries where high radial loads are common. Below is a detailed list of the types of machines where the N309 bearing is typically applied, the role it plays in these machines, and some common brands of these machines.
Types of Machines:
Electric Motors:
- Role: The N309 bearing supports the rotor, allowing it to spin smoothly while carrying the high radial loads generated by the motor’s operation.
- Common Brands: Siemens, ABB, General Electric (GE)
Industrial Gearboxes:
- Role: In gearboxes, the N309 bearing supports the gears and shafts, ensuring the smooth transfer of power and the handling of high radial loads that occur during gear operation.
- Common Brands: SEW-Eurodrive, Bonfiglioli, Sumitomo
Conveyor Systems:
- Role: The bearing is used to support the conveyor rollers, allowing them to rotate and move materials efficiently along the conveyor line while withstanding substantial radial loads.
- Common Brands: FlexLink, Dematic, Rexnord
Pumps (Centrifugal and Reciprocating):
- Role: The N309 bearing supports the pump shafts, ensuring smooth and efficient operation under high radial loads, which is crucial for the reliable performance of the pump.
- Common Brands: Grundfos, KSB, Sulzer
Machine Tool Spindles:
- Role: In machine tools, the bearing provides precise support for the spindle, allowing it to rotate accurately under high loads, which is essential for precision machining.
- Common Brands: DMG Mori, Haas, Mazak
Printing Presses:
- Role: The bearing supports the rollers in printing presses, ensuring smooth rotation and precise alignment, which is critical for high-quality print production.
- Common Brands: Heidelberg, Komori, Xerox
N 309 Bearing Cross Reference and Interchange
| Manufacturer | Bearing Model |
|---|---|
| Amigo | N309 |
| SKF | N309 ECJ |
| NTN | N309 |
| FAG | N309-E-TVP2 |
| NSK | N 309 EW |
| NACHI | N309EG |
Known for its ability to handle high radial loads and offer low friction, it is a preferred choice in industries ranging from automotive to manufacturing.
Choosing the Right Bearing
This product comparison module not only highlights the key differences between Amigo N 309 and other similar bearings but also guides users on when to choose Amigo N 309 bearings for their specific needs.
Explanation: When to Choose N 309 Bearings
The N 309 Single Row Cylindrical Roller Bearing is a versatile component designed for applications where high radial load capacity, precision, and reliability are crucial. Below are the scenarios where the Amigo N 309 bearing is the optimal choice:
High Radial Load Applications:
The Amigo N 309 bearing is engineered to handle substantial radial loads, making it suitable for heavy machinery, electric motors, and gearboxes. Its high load capacity ensures that it can perform reliably even under intense conditions.Precision and Reliability:
In applications where precision is key, such as in machine tools or pumps, the P6 precision class of Amigo N 309 ensures minimal deviation, maintaining the smooth operation and longevity of the machinery.Low Friction and High Efficiency:
The low friction characteristic of the Amigo N 309 bearing contributes to energy efficiency in machinery, reducing heat generation and ensuring optimal performance.Operating in Extreme Conditions:
With an operating temperature range of -40°C to 120°C, the Amigo N 309 bearing is well-suited for environments that experience extreme temperatures, offering reliable performance where other bearings might fail.Cost-Effective Solution:
Compared to premium brands like SKF or FAG, the Amigo N 309 bearing offers similar performance at a more competitive price, making it an excellent choice for budget-conscious buyers who do not want to compromise on quality.
| Feature | Amigo N 309 | SKF N 309 ECJ | NTN N 309 | FAG N 309-E-TVP2 | NSK N 309 EW | NACHI N309EG |
|---|---|---|---|---|---|---|
| Radial Load Capacity | High | High | High | High | High | High |
| Precision Class | P6 (High Precision) | P6 (High Precision) | Standard | P6 (High Precision) | Standard | P6 (High Precision) |
| Friction | Low | Low | Low | Low | Low | Low |
| Material | High-quality Steel | High-quality Steel | Standard Steel | High-quality Steel | Standard Steel | High-quality Steel |
| Sealing | Without | Without | Without | Without | Without | Without |
| Cage Type | Pressed Steel | Pressed Steel | Pressed Steel | Pressed Steel | Pressed Steel | Pressed Steel |
| Lubrication | Grease & Oil | Grease & Oil | Grease & Oil | Grease & Oil | Grease & Oil | Grease & Oil |
| Cost | Competitive | Premium | Standard | Premium | Standard | Premium |
| Availability | High | Medium | Medium | Medium | Medium | Medium |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo N 309 Bearings Are the Top Choice
"The Amigo N 309 Bearing has been a fantastic addition to our machinery. We initially used SKF bearings but decided to give Amigo a try due to their competitive pricing. To our surprise, these bearings perform just as well as the SKF bearings we were accustomed to. The installation was smooth, and the bearing has been running quietly and efficiently ever since. I would highly recommend these bearings to anyone looking for a reliable alternative to the bigger brands."
Nova Boyle
 "I've been using Amigo N 309 Bearings in our production line for the past six months, and I must say, they are on par with SKF bearings in terms of quality and performance. The bearings have a solid build, and I haven't noticed any difference in durability or efficiency. They offer excellent value for money, and I’ll definitely be purchasing more for future projects."
Jazmin Cremin
"After years of using SKF bearings, I was hesitant to switch to a new brand, but the Amigo N 309 Bearing exceeded my expectations. The bearing feels robust and well-engineered, providing a smooth and stable operation in our equipment. It's been performing just as well as the SKF bearings we’ve used in the past, with no issues whatsoever. I highly recommend Amigo bearings to anyone seeking a high-quality alternative."
Ethan Orn
"We recently replaced several SKF bearings with Amigo N 309 Bearings in our heavy-duty machinery. The transition was seamless, and I’ve been impressed with how similar the performance has been. The Amigo bearings offer the same smooth operation and longevity that we’ve come to expect from SKF, but at a more affordable price. We’re very pleased with the results and will continue to use Amigo bearings in the future."
Adan Feeney
Explore More on Bearings
