NNU 4932 B/SPW33 160x220x60 Bearing
Double Row Cylindrical Roller Bearings
The NNU 4932 B/SPW33 Double Row Cylindrical Roller Bearings are precision-engineered for heavy-duty applications that demand high load capacities and accuracy. With a bore diameter of 160 mm, an outside diameter of 220 mm, and a width of 60 mm, this bearing is designed for both radial and axial loads. It features a tapered bore for easy installation and adjustment, along with a machined brass cage for durability and consistent performance. The bearing’s design ensures optimal lubrication and reduced friction, making it suitable for use in industries such as mining, power generation, and steel production.
Performance Overview of the NNU 4932 B/SPW33 Bearings
| Category | Details |
|---|---|
| Brand | AMIGO NNU 49/500 BK/SPW33X | Interchangeable With: SKF NNU 49/500 BK/SPW33X |
| Bore Diameter | 160 mm |
| Outside Diameter | 220 mm |
| Width | 60 mm |
| Basic Dynamic Load Rating | 330 kN |
| Basic Static Load Rating | 680 kN |
| Attainable Speed for Grease Lubrication | 3,600 r/min |
| Attainable Speed for Oil-Air Lubrication | 4,000 r/min |
| Bearing Part | Complete Bearing |
| Number of Rows | 2 |
| Bore Type | Cylindrical |
| Cage | Machined Metal |
| Design | NNU |
| Number of Flanges, Outer Ring | 3 |
| Number of Flanges, Inner Ring | 0 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing Steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Annular Groove and Lubrication Holes |
| Product Net Weight | 6.75 kg |
| Dimensions(mm) | 160x220x60 |
| Category | Details |
|---|---|
| Brand | AMIGO NNU 49/500 BK/SPW33X | Interchangeable With: SKF NNU 49/500 BK/SPW33X |
| Bore Diameter | 6.299 in |
| Outside Diameter | 8.661 in |
| Width | 2.362 in |
| Basic Dynamic Load Rating | 74,187 lbf |
| Basic Static Load Rating | 152,870 lbf |
| Attainable Speed for Grease Lubrication | 3,600 r/min |
| Attainable Speed for Oil-Air Lubrication | 4,000 r/min |
| Bearing Part | Complete Bearing |
| Number of Rows | 2 |
| Bore Type | Cylindrical |
| Cage | Machined Metal |
| Design | NNU |
| Number of Flanges, Outer Ring | 3 |
| Number of Flanges, Inner Ring | 0 |
| Loose Flange | None |
| Radial Internal Clearance | CN |
| Tolerance Class | Class SP (SP) |
| Material, Bearing | Bearing Steel |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | Annular Groove and Lubrication Holes |
| Product Net Weight | 14.881 lb |
| Dimensions(in) | 6.299x8.661x2.362 |
Specifications Overview of the NNU 4932 B/SPW33 Bearings
| Parameter | Value |
|---|---|
| Bore diameter | 160 mm |
| Outside diameter | 220 mm |
| Width | 60 mm |
| Shoulder diameter outer ring (NNU design) | 200.9 mm |
| Raceway diameter inner ring (NNU design) | 178.5 mm |
| Width annular lubrication groove | 5.5 mm |
| Diameter lubrication hole (outer ring) | 3 mm |
| Chamfer dimension outer ring | min. 2 mm |
| Chamfer dimension inner ring (bearing with tapered bore) | min. 2 mm |
| Permissible axial displacement | max. 2 mm |
| Abutment diameter shaft | min. 170 mm, max. 176 mm (NNU design) |
| Abutment diameter shaft (NNU design; not for tapered bore) | min. 182 mm |
| Abutment diameter housing | max. 210 mm |
| Fillet radius | max. 2 mm |
| Oil nozzle position | 179.8 mm (not for variants with TNHA cage) |
| Parameter | Value |
|---|---|
| Bore diameter | 6.299 in |
| Outside diameter | 8.661 in |
| Width | 2.362 in |
| Shoulder diameter outer ring (NNU design) | 7.909 in |
| Raceway diameter inner ring (NNU design) | 7.028 in |
| Width annular lubrication groove | 0.217 in |
| Diameter lubrication hole (outer ring) | 0.118 in |
| Chamfer dimension outer ring | min. 0.079 in |
| Chamfer dimension inner ring (bearing with tapered bore) | min. 0.079 in |
| Permissible axial displacement | max. 0.079 in |
| Abutment diameter shaft | min. 6.693 in |
| Abutment diameter shaft (NNU design) | max. 6.929 in |
| Abutment diameter shaft (NNU design; not for tapered bore) | min. 7.165 in |
| Abutment diameter housing | max. 8.268 in |
| Fillet radius | max. 0.079 in |
| Oil nozzle position | 7.079 in (not for variants with TNHA cage) |
Applicable Machines and Industries
The NNU 4932 B/SPW33 Double Row Cylindrical Roller Bearings are used in various heavy-duty machinery where high radial loads and high speeds are required. Below is a detailed list of machines, functions, and interchangeable brands or series:
Suitable Machines:
- Metal Rolling Mills
- Function: Used to support high radial loads while allowing the heavy rollers to operate at high speeds in the mill.
- Cement Crushers
- Function: Reduces wear and tear while carrying substantial radial loads due to the crushing action of the cement mill.
- Paper Making Machines
- Function: Ensures smooth operation of the large cylinders in the drying section that operate at high speeds.
- Large Electric Motors
- Function: Supports the rotor and stator, handling radial loads in large electric motor applications.
- Wind Turbines
- Function: Utilized in the gearbox to carry large radial loads while ensuring stable rotation.
- Mining Equipment
- Function: Provides support in mining crushers and conveyors for handling heavy loads in demanding environments.
Function in Machines:
- Radial Load Capacity: Designed to handle high radial loads, which is critical in machinery with large rotating components.
- High Speed Operation: Capable of functioning effectively in high-speed applications without overheating.
- Support for Large Cylinders/Rollers: Ensures stable operation and reduces wear and tear in high-demand environments.
- Reduced Vibration: Helps in dampening vibration in large machinery, which is essential for precision applications like paper making and metal rolling.
Interchangeable Bearing Brands/Series:
- SKF NNU 4932 B/SPW33
- FAG NNU4932-S-K-M-SP
- NTN NNU 4932/SPC3
- NSK NNU4932B/SPW33
- Timken NNU4932B/SP
- KOYO NNU4932B/SP
These alternative brands and series offer similar performance, typically interchangeable in applications where the NNU 4932 B/SPW33 is used.
NNU 4932 B/SPW33 Bearing Cross Reference and Interchange
| Brand | Model |
|---|---|
| Amigo | NNU 4932 B/SPW33 |
| SKF | NNU 4932 B/SPW33 |
| FAG | NNU4932-S-M-SP |
This table provides a full breakdown of technical specifications and the cross-referenced bearing series from various manufacturers like SKF and FAG, interchangeable with the Amigo NNU 4932 B/SPW33 Double Row Cylindrical Roller Bearing.
Choosing the Right Bearing
The Amigo NNU 4932 B/SPW33 Double Row Cylindrical Roller Bearing is engineered for applications requiring high precision and durability. This bearing is ideal when:
When to Choose Amigo NNU 4932 B/SPW33 Double Row Cylindrical Roller Bearings
- High Dynamic Loads: Your machinery operates under demanding conditions with high dynamic and static loads, requiring robust performance and longevity.
- High-Speed Performance: The bearing excels in environments where the attainable speed for grease and oil-air lubrication is critical (3,600 r/min for grease lubrication and 4,000 r/min for oil-air lubrication).
- Smooth Operation: The inclusion of annular grooves and lubrication holes ensures that the bearing can be efficiently lubricated, providing smooth operation in high-stress environments.
- Heavy-Duty Applications: This bearing is suitable for industrial machines like rolling mills, metal processing equipment, and heavy-duty gearboxes, where consistent performance under heavy loads is vital.
By choosing Amigo NNU 4932 B/SPW33, customers can expect similar or better performance compared to well-known brands like SKF and FAG, with added benefits like cost efficiency and the assurance of reliable performance over time.
| Specification | Amigo NNU 4932 B/SPW33 | SKF NNU 4932 B/SPW33 | FAG NNU 4932-S-M-SP |
|---|---|---|---|
| Bore Diameter (d) | 160 mm | 160 mm | 160 mm |
| Outside Diameter (D) | 220 mm | 220 mm | 220 mm |
| Width (B) | 60 mm | 60 mm | 60 mm |
| Dynamic Load Rating | 330 kN | 330 kN | 330 kN |
| Static Load Rating | 680 kN | 680 kN | 680 kN |
| Speed (Grease Lubrication) | 3,600 r/min | 3,600 r/min | 3,600 r/min |
| Speed (Oil-Air Lubrication) | 4,000 r/min | 4,000 r/min | 4,000 r/min |
| Material | Bearing Steel | Bearing Steel | Bearing Steel |
| Radial Internal Clearance | CN | CN | CN |
| Lubrication Features | Annular grooves and holes | Annular grooves and holes | Annular grooves and holes |
| Relubrication Feature | Yes | Yes | Yes |
| Fillet Radius | 2 mm | 2 mm | 2 mm |
| Cost Efficiency | More affordable | Standard price | Standard price |
Recommended Products for Optimal Performance
Enhance your bearing operations with these related products:
Why Amigo NNU 4932 B/SPW33 Bearings Are the Top Choice
"We've been using the Amigo NNU 4932 B/SPW33 bearings for several months in our high-load machinery, and I must say, the performance is on par with the SKF bearings we previously used. The bearings handle extreme pressure exceptionally well, and we've noticed no significant wear, even under constant use. It's great to have found such a reliable and affordable alternative!"
Daphne Noah
"I was skeptical at first, switching from a more recognized brand to Amigo bearings, but the NNU 4932 B/SPW33 surprised me with its smooth operation and durability. The quality feels just like the SKF bearings we've used in the past. They’ve been running flawlessly in our heavy-duty machines, and we’re very satisfied with the performance. I’d definitely recommend Amigo bearings to anyone looking for top-tier performance without the premium price."
William Howell
"Amigo NNU 4932 B/SPW33 bearings have exceeded our expectations. We replaced some of our old SKF bearings with these, and there has been no drop in performance whatsoever. They’ve handled our high-speed applications beautifully, and the lubrication system works efficiently, keeping everything running smoothly. For anyone considering a switch, Amigo bearings are an excellent choice."
Samuel Helin
"We’ve always trusted SKF, but after using the Amigo NNU 4932 B/SPW33, I can confidently say these bearings deliver the same quality and longevity. In our industrial equipment, they’ve maintained consistent reliability and smooth operation, even under heavy loads. If you want to achieve the same SKF-level performance while saving some cost, Amigo is a smart choice."
Cara Hobson
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