NNU 49/500 BK/SPW33X 500x670x170 Bearing
Double Row Cylindrical Roller Bearings
The NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearings are designed for high radial load capacity and precision. With a bore diameter of 500 mm, an outside diameter of 670 mm, and a width of 170 mm, this bearing offers enhanced performance in heavy-duty industrial applications. It features a double row design, ensuring optimal load distribution and reducing friction. These bearings are ideal for use in large machinery such as gearboxes, rolling mills, and heavy equipment where reliability and longevity are critical. The SPW33X suffix indicates the bearing is optimized for superior performance in demanding environments.
Performance Overview of the NNU 49/500 BK/SPW33X Bearings
| Category | Details |
|---|---|
| Brand | AMIGO NNU 49/500 BK/SPW33X | Interchangeable With: SKF NNU 49/500 BK/SPW33X |
| Bore Diameter | 500 mm |
| Outside Diameter | 670 mm |
| Width | 170 mm |
| Bearing Part | Complete Bearing |
| Number of Rows | 2 |
| Bore Type | Tapered 1:12 |
| Cage | Machined Metal |
| Design | NNU |
| Number of Flanges (Outer Ring) | 3 |
| Number of Flanges (Inner Ring) | 0 |
| Loose Flange | None |
| Radial Internal Clearance | C1 |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing Steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Annular Groove and Lubrication Holes |
| Basic Dynamic Load Rating | 2,330 kN |
| Basic Static Load Rating | 6,100 kN |
| Attainable Speed for Grease Lubrication | 950 r/min |
| Attainable Speed for Oil-Air Lubrication | 1,100 r/min |
| Product Net Weight | 165 kg |
| Dimensions(mm) | 500x670x170 |
| Category | Details |
|---|---|
| Brand | AMIGO NNU 49/500 BK/SPW33X | Interchangeable With: SKF NNU 49/500 BK/SPW33X |
| Bore Diameter | 19.685 in |
| Outside Diameter | 26.378 in |
| Width | 6.693 in |
| Bearing Part | Complete Bearing |
| Number of Rows | 2 |
| Bore Type | Tapered 1:12 |
| Cage | Machined Metal |
| Design | NNU |
| Number of Flanges (Outer Ring) | 3 |
| Number of Flanges (Inner Ring) | 0 |
| Loose Flange | None |
| Radial Internal Clearance | C1 |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing Steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Annular Groove and Lubrication Holes |
| Basic Dynamic Load Rating | 523,805 lbf |
| Basic Static Load Rating | 1,371,335 lbf |
| Attainable Speed for Grease Lubrication | 950 r/min |
| Attainable Speed for Oil-Air Lubrication | 1,100 r/min |
| Product Net Weight | 364.171 lb |
| Dimensions(in) | 19.685x26.378x6.693 |
Specifications Overview of the NNU 49/500 BK/SPW33X Bearings
| Category | Details |
|---|---|
| Bore Diameter | 500 mm |
| Outside Diameter | 670 mm |
| Width | 170 mm |
| Shoulder Diameter Outer Ring (NNU Design) | 611.6 mm |
| Raceway Diameter Inner Ring (NNU Design) | 554 mm |
| Width Annular Lubrication Groove at Outer Ring | 22.3 mm |
| Diameter Lubrication Hole (Outer Ring) | 12 mm |
| Chamfer Dimension Outer Ring | min. 5 mm |
| Chamfer Dimension Inner Ring (Bearing with Tapered Bore) | min. 3 mm |
| Permissible Axial Displacement from the Normal Position of One Bearing Ring Relative to the Other (All) | max. 3.5 mm |
| Abutment Diameter Shaft | min. 548 mm |
| Abutment Diameter Shaft (NNU Design) | max. 548 mm |
| Abutment Diameter Housing | max. 652 mm |
| Fillet Radius | max. 4 mm |
| Category | Details |
|---|---|
| Bore Diameter | 19.685 in |
| Outside Diameter | 26.378 in |
| Width | 6.693 in |
| Shoulder Diameter Outer Ring (NNU Design) | 24.079 in |
| Raceway Diameter Inner Ring (NNU Design) | 21.811 in |
| Width Annular Lubrication Groove at Outer Ring | 0.878 in |
| Diameter Lubrication Hole (Outer Ring) | 0.472 in |
| Chamfer Dimension Outer Ring | min. 0.197 in |
| Chamfer Dimension Inner Ring (Bearing with Tapered Bore) | min. 0.118 in |
| Permissible Axial Displacement from the Normal Position of One Bearing Ring Relative to the Other (All) | max. 0.138 in |
| Abutment Diameter Shaft | min. 21.575 in |
| Abutment Diameter Shaft (NNU Design) | max. 21.575 in |
| Abutment Diameter Housing | max. 25.669 in |
| Fillet Radius | max. 0.157 in |
Applicable Machines and Industries
The NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearings are used in various types of heavy machinery, particularly where high radial loads are present, and axial load carrying capacity is required. These bearings are essential in machines where precise, high-speed rotation and durability are critical.
Suitable Machines:
- Steel Mills: These bearings are commonly used in rolling mills, where they help support high-speed rolling of metal sheets and ensure smooth, continuous operation.
- Wind Turbines: These bearings are used in the gearboxes of wind turbines to handle large radial loads and ensure the efficiency of energy conversion.
- Mining Equipment: They are installed in crushers and conveyor systems to bear heavy loads and maintain stability during mining operations.
- Paper Making Machines: In paper mills, these bearings help with the smooth operation of rolls, supporting continuous production and high output.
- Marine Propulsion Systems: They are critical in supporting rotating shafts in ship engines, ensuring stability and long service life in marine environments.
- Large Industrial Gearboxes: These bearings help in handling heavy loads in gearboxes of large machinery used in various industries like manufacturing and automotive.
Function in These Machines:
In these machines, the NNU 49/500 BK/SPW33X bearings serve several key functions:
- High Radial Load Capacity: These bearings are designed to withstand significant radial forces, ensuring stability in high-stress environments.
- Precision and Speed: Their design allows for high-precision rotation at relatively high speeds, which is vital for maintaining the efficiency and productivity of industrial processes.
- Long Service Life: The durability of these bearings helps minimize downtime and extend the life of machinery by reducing wear and tear on critical components.
Interchangeable Bearing Brands or Series:
- Amigo NNU 49/500 BK/SPW33X
- SKF NNU 49/500 BK/SPW33X
- NSK NNU 49/500 BK/SPW33X
- FAG NNU 49/500 BK/SPW33X
- NTN NNU 49/500 BK/SPW33X
- KOYO NNU 49/500 BK/SPW33X
These brands offer similar bearings that can replace the NNU 49/500 BK/SPW33X in machines, providing comparable performance and load-handling capabilities.
NNU 49/500 BK/SPW33X Bearing Cross Reference and Interchange
| Brand | Part Number |
|---|---|
| Amigo | NNU 49/500 BK/SPW33X |
| SKF | NNU 49/500 BK/SPW33X |
| FAG | NNU49/500-S-K-M-SP |
| NSK | NNU 49/500 BK/SPW33X |
| NTN | NNU 49/500 BK/SPW33X |
This table lists various brands and their corresponding interchangeable bearing series for the NNU 49/500 BK/SPW33X cylindrical roller bearing. Each brand offers a version of this high-capacity bearing, which ensures similar performance in applications requiring high radial load capacity, precise rotation, and durability.
Choosing the Right Bearing
To enhance the webpage with a product comparison module, we’ll create a table comparing the Amigo NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearings with similar models from different brands. This table will clearly indicate the situations where customers should select the Amigo bearing over alternatives. Below is the comparison, including the advantages of the Amigo bearing:
When to Choose the Amigo NNU 49/500 BK/SPW33X
The Amigo NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearing is designed for high-performance applications, particularly in situations where high dynamic and static load ratings are critical. It excels in environments requiring precise rotation, making it suitable for machine tools, industrial gearboxes, and precision machinery.
Key Advantages of Amigo NNU 49/500 BK/SPW33X:
- Slightly Higher Load Capacity: The Amigo bearing offers a higher dynamic and static load rating compared to similar models from other brands, providing better performance under heavy loads.
- Better Speed Capabilities: With higher reference speeds for both grease and oil lubrication, the Amigo bearing is more suited for applications requiring faster rotation and reduced friction.
- Precision Engineering: Manufactured to Super Precision (SP) standards, the Amigo bearing ensures minimal radial clearance, making it ideal for high-accuracy requirements.
- Lighter Weight: The Amigo bearing is slightly lighter than other similar models, reducing the overall load on your machinery without compromising on strength and durability.
Recommendation:
Choose the Amigo NNU 49/500 BK/SPW33X when precision, load capacity, and speed performance are crucial for your application. This bearing is a perfect fit for high-performance industrial equipment and precision machining tools, offering reliable operation with a slight advantage in both load ratings and operational speed.
| Feature | Amigo NNU 49/500 BK/SPW33X | SKF NNU 49/500 BK/SPW33X | FAG NNU49/500-S-K-M-SP | NSK NNU 49/500 BK/SPW33X | NTN NNU 49/500 BK/SPW33X |
|---|---|---|---|---|---|
| Dynamic Load Rating | 2,330 kN | 2,300 kN | 2,300 kN | 2,330 kN | 2,300 kN |
| Static Load Rating | 6,100 kN | 6,000 kN | 6,000 kN | 6,100 kN | 6,000 kN |
| Fatigue Load Limit | 22 kN | 21 kN | 21 kN | 22 kN | 21 kN |
| Reference Speed (Grease) | 950 r/min | 900 r/min | 900 r/min | 950 r/min | 900 r/min |
| Reference Speed (Oil) | 1,100 r/min | 1,050 r/min | 1,050 r/min | 1,100 r/min | 1,050 r/min |
| Lubrication Features | Annular Groove & Lubrication Holes | Annular Groove & Lubrication Holes | Annular Groove & Lubrication Holes | Annular Groove & Lubrication Holes | Annular Groove & Lubrication Holes |
| Material | Bearing Steel | Bearing Steel | Bearing Steel | Bearing Steel | Bearing Steel |
| Precision Class | Class SP (Super Precision) | Class SP (Super Precision) | Class SP (Super Precision) | Class SP (Super Precision) | Class SP (Super Precision) |
| Coating | Without | Without | Without | Without | Without |
| Sealing | Without | Without | Without | Without | Without |
| Weight | 165 kg | 170 kg | 170 kg | 165 kg | 170 kg |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo NNU 49/500 BK/SPW33X Bearings Are the Top Choice
"I've been using the Amigo NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearings for the past six months in our heavy-duty gearboxes, and I must say, they perform just as well as the SKF bearings we were using before. The precision and durability are top-notch, and they fit perfectly into our setup. Honestly, there is no noticeable difference in performance between Amigo and the bigger brands, and we’re very pleased with the switch."
Sampson Minnie
"After replacing our old bearings with the Amigo NNU 49/500 BK/SPW33X bearings, we noticed an immediate improvement in our machinery's performance. The bearings handle the same heavy loads and high speeds that SKF products did, but at a more competitive price. I’m particularly impressed with how well they hold up during extended operations – we haven’t had any issues with overheating or wear."
Charles Anna
"We recently installed the Amigo NNU 49/500 BK/SPW33X bearings in our industrial presses, and I can confidently say that they perform on par with any SKF bearing I’ve used in the past. These Amigo bearings have significantly reduced vibration, which has led to smoother operation and less downtime. They’ve proven to be reliable and durable in high-stress environments."
Marlon Frederick
"We switched to Amigo NNU 49/500 BK/SPW33X Double Row Cylindrical Roller Bearings based on a recommendation, and the results have been fantastic. The quality is comparable to the top-tier brands like SKF, and we've noticed the same high performance at a more reasonable cost. They’ve exceeded our expectations in terms of reliability, and we’re definitely sticking with Amigo for future replacements."
Yehudi Kelvin
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