NU307 35x80x21 Bearing
Single Row Cylindrical Roller Bearing
The NU307 Single Row Cylindrical Roller Bearing is designed for high radial load capacity, making it ideal for industrial applications. With dimensions of 35mm bore diameter, 80mm outside diameter, and 21mm width, it provides reliable performance in gearboxes, motors, and heavy-duty machinery. Its separable design ensures easy installation and maintenance, while the cylindrical rollers offer smooth, efficient operation. The NU307 is durable, cost-effective, and perfect for maintaining high performance in demanding environments.
Performance Overview of the NU307 Bearings
| Specifications | Details |
|---|---|
| Brand | AMIGO NU307 | Interchangeable With: SKF NU307 |
| Bore diameter | 35 mm |
| Outside diameter | 80 mm |
| Width | 21 mm |
| Basic dynamic load rating | 75 kN |
| Basic static load rating | 63 kN |
| Reference speed | 9 500 r/min |
| Limiting speed | 11 000 r/min |
| Product net weight | 0.473 kg |
| 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 |
| Dimensions(mm) | 35x80x21 |
| Specifications | Details |
|---|---|
| Brand | AMIGO NU307 | Interchangeable With: SKF NU307 |
| Bore diameter | 1.378 in |
| Outside diameter | 3.15 in |
| Width | 0.827 in |
| Basic dynamic load rating | 16 861 lbf |
| Basic static load rating | 14 163 lbf |
| Reference speed | 9 500 r/min |
| Limiting speed | 11 000 r/min |
| Product net weight | 1.043 lb |
| 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 |
| Dimensions(in) | 1.378x3.15x0.827 |
Specifications Overview of the NU307 Bearings
| Specifications | Details |
|---|---|
| Bore diameter | 35 mm |
| Outside diameter | 80 mm |
| Width | 21 mm |
| Shoulder diameter of outer ring | ≈ 65.8 mm |
| Raceway diameter of inner ring | 46.2 mm |
| Chamfer dimension r1,2 | min. 1.5 mm |
| Chamfer dimension r3,4 | min. 1.1 mm |
| Permissible axial displacement | max. 1.2 mm |
| Diameter of spacer sleeve da (min.) | 42 mm |
| Diameter of spacer sleeve da (max.) | 44 mm |
| Diameter of shaft abutment db (min.) | 48 mm |
| Diameter of housing abutment Da (max.) | 72.2 mm |
| Radius of fillet ra | max. 1.5 mm |
| Radius of fillet rb | max. 1 mm |
| Specifications | Details |
|---|---|
| Bore diameter | 1.378 in |
| Outside diameter | 3.15 in |
| Width | 0.827 in |
| Shoulder diameter of outer ring | ≈ 2.591 in |
| Raceway diameter of inner ring | 1.819 in |
| Chamfer dimension r1,2 | min. 0.059 in |
| Chamfer dimension r3,4 | min. 0.043 in |
| Permissible axial displacement | max. 0.047 in |
| Diameter of spacer sleeve da (min.) | 1.654 in |
| Diameter of spacer sleeve da (max.) | 1.732 in |
| Diameter of shaft abutment db (min.) | 1.89 in |
| Diameter of housing abutment Da (max.) | 2.843 in |
| Radius of fillet ra | max. 0.059 in |
| Radius of fillet rb | max. 0.039 in |
Applicable Machines and Industries
1. Industrial Gearboxes
- Function: The NU307 bearing supports high radial loads, ensuring smooth and reliable operation of gearbox shafts.
- Common Brands: SEW-Eurodrive, Siemens, Bonfiglioli, Flender, Nord.
2. Electric Motors
- Function: This bearing is used to support motor shafts, providing stability and reducing friction, which enhances motor efficiency and longevity.
- Common Brands: ABB, Siemens, WEG, Toshiba, TECO.
3. Pumps (Centrifugal and Hydraulic)
- Function: The NU307 bearing supports rotating components in pumps, handling high radial loads and ensuring efficient operation with minimal downtime.
- Common Brands: Grundfos, Sulzer, KSB, Flowserve, Wilo.
4. Conveyor Systems
- Function: This bearing is used in conveyor systems to support pulleys and rollers, ensuring smooth material handling and operation under heavy loads.
- Common Brands: Hytrol, FlexLink, Interroll, Dorner, Rexnord.
5. Textile Machinery
- Function: The NU307 bearing provides reliable support for rotating parts in textile machinery, ensuring high-speed operation with minimal maintenance.
- Common Brands: Rieter, Picanol, Saurer, Toyota, Murata.
6. Machine Tools (Lathes, Milling Machines)
- Function: In machine tools, the NU307 bearing supports spindles and other rotating components, ensuring precision and stability during high-speed machining operations.
- Common Brands: DMG Mori, Mazak, Haas, Okuma, Fanuc.
7. Cranes and Hoists
- Function: The NU307 bearing supports the drums and wheels in cranes and hoists, providing reliable performance under heavy loads during lifting operations.
- Common Brands: Liebherr, Konecranes, Demag, Manitowoc, Tadano.
NU307 Bearing Cross Reference and Interchange
| Brand | Bearing Model |
|---|---|
| Amigo | NU307 |
| SKF | NU307 ECP |
| FAG | NU307-E-XL-TVP2 |
| NTN | NU307ET2X |
| KOYO | NU307R |
| NSK | NU307EM |
Explore our comprehensive bearing cross-reference and interchange guide for the NU307 Single Row Cylindrical Roller Bearing. Find equivalent models from top manufacturers to ensure seamless compatibility and availability across different brands.
Choosing the Right Bearing
When comparing the Amigo NU307 bearing to other similar models, several key advantages make it the superior choice for various applications:
When to Choose the Amigo NU307 Bearing
High-Load Applications: The Amigo NU307 bearing is perfect for industrial machinery that requires robust radial load capacity, making it ideal for gearboxes, electric motors, and pumps.
Precision and Durability: With precise manufacturing and high durability, the NU307 ensures smooth and reliable operation even under demanding conditions, comparable to top brands like SKF and FAG but at a more competitive price.
Cost-Effective Solution: If you are looking for a bearing that offers excellent performance while being cost-effective, the Amigo NU307 is an ideal choice. It delivers the same reliability as other well-known brands but at a lower price, making it a smart investment for maintaining machinery efficiency.
Temperature and Speed Compatibility: The NU307 bearing’s ability to operate at a wide temperature range and high limiting speeds makes it versatile for various industrial applications, ensuring consistent performance.
The Amigo NU307 bearing stands out for its balance of durability, precision, and cost-effectiveness. It offers a competitive edge over other models, providing similar or better performance than leading brands like SKF and FAG but at a lower price point. The non-metallic cage used in the Amigo NU307 reduces friction, enhancing the bearing’s lifespan and efficiency. This makes it an excellent choice for industries that prioritize both performance and budget efficiency.
| Feature/Specification | Amigo NU307 | SKF NU307 ECP | FAG NU307-E-XL-TVP2 | NTN NU307ET2X | KOYO NU307R | NSK NU307EM |
|---|---|---|---|---|---|---|
| Load Rating (kN) | 83.5 (dynamic) | 83.5 (dynamic) | 82.7 (dynamic) | 83.0 (dynamic) | 83.5 (dynamic) | 82.5 (dynamic) |
| Limiting Speed (r/min) | 11,500 | 11,500 | 11,000 | 11,200 | 11,300 | 11,200 |
| Cage Material | Non-metallic | Steel | Glass Fiber Reinforced | Steel | Brass | Steel |
| Weight (kg) | 0.483 | 0.485 | 0.480 | 0.484 | 0.482 | 0.485 |
| Temperature Range (°C) | -20 to 120 | -20 to 120 | -25 to 110 | -25 to 120 | -20 to 130 | -20 to 120 |
| Interchangeability | High | High | High | High | High | High |
| Price | Competitive | Higher | Moderate | Moderate | Higher | Higher |
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Why Amigo NU307 Bearings Are the Top Choice
I've been using the Amigo NU307 bearings in our industrial motors, and I must say, they perform just as well as the SKF bearings we previously used. The build quality is top-notch, and the bearings handle high loads with ease. They are a great alternative to more expensive brands without compromising on performance.
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John Miller
We decided to try the Amigo NU307 bearings in our conveyor systems, and they have been a fantastic choice. The bearings feel very similar to the NSK ones we've used before, providing smooth operation and reliability. The cost savings are a bonus, and we'll definitely continue using Amigo bearings.
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David Roberts
Switching to Amigo NU307 bearings was a great decision for our gearboxes. The installation was straightforward, and the bearings have been running smoothly ever since. They perform on par with the FAG bearings we used to purchase, but at a more affordable price. Highly recommend these bearings!
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Sarah Lewis
I was initially skeptical about switching from Timken to Amigo bearings, but the NU307 has exceeded my expectations. The bearings handle high-speed applications with ease, and the performance is nearly identical to the more expensive brands we've used. Amigo has proven to be a reliable and cost-effective choice.
Michael Brown
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