NU312 60x130x31 Bearing
Single Row Cylindrical Roller Bearing
The NU312 Single Row Cylindrical Roller Bearing is a highly versatile and reliable bearing designed to accommodate heavy radial loads while providing smooth and efficient operation. This bearing belongs to the cylindrical roller bearing family, which is renowned for its ability to support high radial loads and operate at high speeds, making it an ideal choice for a wide range of industrial applications.
Performance Overview of the NU312 Bearings
| Category | Specification |
|---|---|
| Brand | AMIGO NU312 | Interchangeable With: SKF NU312 |
| Bore Diameter | 60 mm |
| Outside Diameter | 130 mm |
| Width | 31 mm |
| Basic Dynamic Load Rating | 173 kN |
| Basic Static Load Rating | 160 kN |
| Reference Speed | 5,600 r/min |
| Limiting Speed | 6,700 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 | 1.77 kg |
| Dimensions(mm) | 60x130x31 |
| Category | Specification |
|---|---|
| Brand | AMIGO NU312 | Interchangeable With: SKF NU312 |
| Bore Diameter | 2.362 in |
| Outside Diameter | 5.118 in |
| Width | 1.22 in |
| Basic Dynamic Load Rating | 38,892 lbf |
| Basic Static Load Rating | 35,969 lbf |
| Reference Speed | 5,600 r/min |
| Limiting Speed | 6,700 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 | 3.907 lb |
| Dimensions(mm) | 60x130x31 |
Specifications Overview of the NU312 Bearings
| Description | Value |
|---|---|
| Bore Diameter | 60 mm |
| Outside Diameter | 130 mm |
| Width | 31 mm |
| Shoulder Diameter of Outer Ring | 108.6 mm |
| Raceway Diameter of Inner Ring | 77 mm |
| Chamfer Dimension | min. 2.1 mm |
| Chamfer Dimension | min. 2.1 mm |
| Permissible Axial Displacement | max. 2.1 mm |
| Diameter of Spacer Sleeve | min. 72 mm |
| Diameter of Spacer Sleeve | max. 74 mm |
| Diameter of Shaft Abutment | min. 79 mm |
| Diameter of Housing Abutment | max. 118.1 mm |
| Radius of Fillet | max. 2 mm |
| Radius of Fillet | max. 2 mm |
| Value | Description |
|---|---|
| Bore Diameter | 2.362 in |
| Outside Diameter | 5.118 in |
| Width | 1.22 in |
| Shoulder Diameter of Outer Ring | 4.276 in |
| Raceway Diameter of Inner Ring | 3.031 in |
| Chamfer Dimension | min. 0.083 in |
| Chamfer Dimension | min. 0.083 in |
| Permissible Axial Displacement | max. 0.083 in |
| Diameter of Spacer Sleeve | min. 2.835 in |
| Diameter of Spacer Sleeve | max. 2.913 in |
| Diameter of Shaft Abutment | min. 3.11 in |
| Diameter of Housing Abutment | max. 4.65 in |
| Radius of Fillet | max. 0.079 in |
| Radius of Fillet | max. 0.079 in |
Applicable Machines and Industries
The NU312 Single Row Cylindrical Roller Bearing is a robust and reliable component used in various industrial machines. Below is a detailed list of suitable machines, the role the NU312 bearing plays in these machines, and some common brands associated with these machines.
Gearboxes
Role: In gearboxes, the NU312 bearing supports the shafts and gears by handling high radial loads while allowing axial displacement. It ensures smooth and efficient power transmission by maintaining alignment and reducing friction.
Common Brands:Siemens、SEW-Eurodrive、Bonfiglioli、Sumitomo
Electric Motors
Role: The NU312 bearing is used to support the rotor shaft in electric motors. It manages radial loads and allows for thermal expansion of the shaft, ensuring smooth and efficient operation over extended periods.
Common Brands:ABB、Siemens、WEG、Baldor
Pumps
Role: In pump systems, the NU312 bearing supports the impeller shaft, enabling it to rotate under high radial loads. It reduces friction and wear, ensuring the pump operates efficiently and reliably over time.
Common Brands:Grundfos、KSB、Sulzer、Flowserve
Conveyors
Role: The NU312 bearing is used in conveyor systems to support rollers and shafts, allowing the smooth transport of materials. It manages the radial loads effectively, ensuring the conveyor system operates reliably with minimal downtime.
Common Brands:FlexLink、Dematic、Dorner、Interroll
Paper Mills
Role: In paper mills, the NU312 bearing is used to support rotating components in 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 NU312 Single Row Cylindrical Roller Bearing is essential in various machines where high radial loads are present.
NU312 Bearing Cross Reference and Interchange
| Manufacturer | Bearing Model |
|---|---|
| Amigo | NU312 |
| SKF | NU312 ECP |
| NTN | NU312 |
| FAG | NU312 |
| Timken | NU312 |
| NSK | NU312 |
| Koyo | NU312 |
This cross-reference table lists equivalent bearing models from various manufacturers that can be used interchangeably with the NU312 bearing.
Choosing the Right Bearing
Selecting the appropriate bearing is essential for ensuring your machinery operates efficiently and reliably. Here’s when NU312 bearings, particularly Amigo NU312, are the best choice:
Why Choose NU312 Bearings?
- High Radial Load Applications: If your application involves substantial radial loads, the Amigo NU312 bearing offers superior load capacity, ensuring long-lasting performance under heavy stress.
- High-Speed Requirements: For operations requiring high rotational speeds, the Amigo NU312 bearing’s higher limiting speed makes it an ideal choice, outperforming many competitors.
- Axial Displacement Needs: The NU312 bearing’s ability to accommodate axial displacement in both directions makes it versatile and suitable for applications where thermal expansion and contraction occur.
- Cost-Effective Solutions: Amigo NU312 bearings offer excellent performance at a competitive price, making them an ideal choice for buyers seeking value without compromising on quality.
Amigo NU312 bearings offer superior performance in terms of load capacity, speed, and durability, making them an excellent choice for a wide range of industrial applications.
| Feature/Model | Amigo NJ309 | SKF NJ309 ECP | NTN NJ309 | MRC MR309G |
|---|---|---|---|---|
| Load Capacity (Dynamic) | 25,179 lbf | 24,500 lbf | 24,700 lbf | 24,600 lbf |
| Load Capacity (Static) | 22,481 lbf | 22,000 lbf | 22,100 lbf | 22,000 lbf |
| Reference Speed | 7,500 r/min | 7,300 r/min | 7,200 r/min | 7,200 r/min |
| Limiting Speed | 8,500 r/min | 8,000 r/min | 8,200 r/min | 8,000 r/min |
| Cage Material | Non-metallic | Steel | Steel | Brass |
| Axial Displacement Capability | In one direction | In one direction | In one direction | In one direction |
| Sealing | Without | Without | Without | Without |
| Relubrication Feature | Without | Without | Without | Without |
| Warranty | 2 years | 1 year | 1 year | 1 year |
| Price | Competitive | Higher | Moderate | Moderate |
Recommended Products for Optimal Performance
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Why Amigo NU312 Bearings Are the Top Choice
"We recently replaced Amigo NU312 bearings on our equipment and they are excellent. We had been using SKF bearings before, but I found that the Amigo NU312 is just as good. It is very stable under heavy loads and high speeds, and the installation process is very smooth. It is really a good value for money!"
Lynn Pagac
"I used Amigo NU312 bearings in motor maintenance and I am very happy with the performance of this bearing. Compared with the NTN bearings we used before, Amigo NU312 is very quiet in operation and can withstand high loads. What surprised me most is that it is very similar to SKF bearings, but the price is more competitive. We will continue to choose Amigo products."
Narciso Dooley
"I replaced Amigo NU312 bearings on several compressors and the results are very satisfactory. This bearing runs very smoothly under high speeds and high loads, and is almost indistinguishable from the FAG bearings I used in the past. It is completely comparable to the big brands in quality, and the price is better. I highly recommend it to other users who need reliable bearings."
Twila Bradtke
"Our company has been using SKF bearings for a long time, but after trying the Amigo NU312 bearing this time, I was surprised by its performance. It runs smoothly and quietly under high temperature and high pressure conditions, and feels very similar to SKF products. Considering its more reasonable price, I think the Amigo NU312 is a wiser choice."
August Gleason
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