312979 D 760x1080x790 Bearing
Four-Row Cylindrical Roller Bearings
The 312979 D Four-Row Cylindrical Roller Bearing is specifically designed for demanding industrial applications such as steel mills, mining equipment, and paper manufacturing. Its four-row cylindrical design provides exceptional radial load-carrying capacity, making it ideal for heavy-duty operations where both performance and reliability are critical. The bearing’s ability to handle high shock loads ensures smooth and efficient operation even in harsh environments. With a robust build, it minimizes friction, reducing wear and extending service life. The 312979 D bearing is widely used in applications requiring high precision and durability, offering long-term operational efficiency and low maintenance costs.
Performance Overview of the 312979 D Bearings
| Specifications | Details |
|---|---|
| Brand | AMIGO 312979 D | Interchangeable With: SKF 312979 D |
| Bore Diameter | 760 mm |
| Outside Diameter | 1080 mm |
| Width | 790 mm |
| Basic Dynamic Load Rating | 23,800 kN |
| Basic Static Load Rating | 65,500 kN |
| Bearing Part | Complete Bearing |
| Number of Rows | 4 |
| Locating Feature, Bearing Outer Ring | None |
| Bore Type | Cylindrical |
| Number of Flanges, Outer Ring | 5 |
| Number of Flanges, Inner Ring | 0 |
| Loose Flange | None |
| Radial Internal Clearance | C4 |
| Tolerance Class | Class 6 (P6) |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | With |
| Dimensions (mm) | 760 x 1080 x 790 |
| Specifications | Details |
|---|---|
| Brand | AMIGO 312979 D | Interchangeable With: SKF 312979 D |
| Bore Diameter | 29.921 in |
| Outside Diameter | 42.52 in |
| Width | 31.102 in |
| Basic Dynamic Load Rating | 5,350,453 lbf |
| Basic Static Load Rating | 14,724,986 lbf |
| Bearing Part | Complete Bearing |
| Number of Rows | 4 |
| Locating Feature, Bearing Outer Ring | None |
| Bore Type | Cylindrical |
| Number of Flanges, Outer Ring | 5 |
| Number of Flanges, Inner Ring | 0 |
| Loose Flange | None |
| Radial Internal Clearance | C4 |
| Tolerance Class | Class 6 (P6) |
| Coating | Without |
| Sealing | Without |
| Lubricant | None |
| Relubrication Feature | With |
| Dimensions (in) | 29.921 x 42.52 x 31.102 |
Specifications Overview of the 312979 D Bearings
| Specifications | Details |
|---|---|
| Bore Diameter | 760 mm |
| Outside Diameter | 1080 mm |
| Total Bearing Width Over Inner Ring(s) | 790 mm |
| Total Bearing Width Over Outer Ring(s) | 790 mm |
| Outer Ring Shoulder Diameter | ≈ 974 mm |
| Raceway Diameter Inner Ring | 846 mm |
| Width of Annular Groove | 22.3 mm |
| Diameter Lubrication Hole (Outer Ring) | 12 mm |
| Corner Radius/Chamfer Inner Ring | min. 7.5 mm |
| Chamfer Dimension on the Outer Ring | min. 7.5 mm |
| Specifications | Details |
|---|---|
| Bore Diameter | 29.921 in |
| Outside Diameter | 42.52 in |
| Total Bearing Width Over Inner Ring(s) | 31.102 in |
| Total Bearing Width Over Outer Ring(s) | 31.102 in |
| Outer Ring Shoulder Diameter | ≈ 38.346 in |
| Raceway Diameter Inner Ring | 33.307 in |
| Width of Annular Groove | 0.878 in |
| Diameter Lubrication Hole (Outer Ring) | 0.472 in |
| Corner Radius/Chamfer Inner Ring | min. 0.295 in |
| Chamfer Dimension on the Outer Ring | min. 0.295 in |
Applicable Machines and Industries
1. Steel Rolling Mills
- Role: Supports large radial loads, ensuring smooth operation in high-load environments where precision is critical.
- Replaceable Bearing Brands/Series: SKF 312979 D, FAG 312979 D, NTN 312979 D
2. Paper Manufacturing Machines
- Role: Handles radial loads during high-speed operations, providing reliable support for continuous, high-volume production.
- Replaceable Bearing Brands/Series: SKF 312979 D, NSK 312979 D, Timken 312979 D
3. Wind Turbine Gearboxes
- Role: Ensures efficient power transmission by supporting both radial and axial loads in wind turbines.
- Replaceable Bearing Brands/Series: SKF 312979 D, FAG 312979 D, INA 312979 D
4. Hydraulic Presses
- Role: Provides stable operation in hydraulic presses by supporting heavy radial loads during pressing operations.
- Replaceable Bearing Brands/Series: NTN 312979 D, Timken 312979 D, NSK 312979 D
5. Mining Equipment
- Role: Handles large radial loads and shock loads, ensuring reliable performance in harsh mining conditions.
- Replaceable Bearing Brands/Series: SKF 312979 D, NTN 312979 D, FAG 312979 D
312979 D Bearing Cross Reference and Interchange
| Brand | Bearing Model |
|---|---|
| SKF | 312979 D |
| Amigo | 312979 D |
| KOYO | 312979 D |
| NACHI | 312979 D |
This table summarizes the bearing cross-reference and interchange guide for the 312979 D Four-Row Cylindrical Roller Bearings. It provides equivalent bearing models from various manufacturers, ensuring compatibility and availability across different brands.
Choosing the Right Bearing
When comparing the Amigo 312979 D bearing to other similar models, several key advantages make it the superior choice for various applications:
When to Choose 312979 D?
- For heavy radial loads: The 312979 D is ideal for applications requiring high load-carrying capacity, such as steel mills and mining equipment.
- For continuous operation: Its robust design with relubrication ensures long-term performance under continuous, high-load conditions.
- When precision matters: The Class 6 (P6) tolerance ensures smooth operation and high accuracy.
- For demanding environments: The C4 radial internal clearance makes it suitable for environments with heavy shock loads.
- Cost-effective solution: The Amigo 312979 D provides high performance at a competitive price compared to similar models.
The Amigo 312979 D bearing stands out due to its excellent load-carrying capacity and relubrication feature, making it ideal for heavy-duty applications. Its C4 clearance and precision tolerance allow smooth and efficient operation under extreme conditions, providing long-term reliability at a competitive price.
| Feature | Amigo 312979 D | SKF 312979 D | KOYO 312979 D | NACHI 312979 D |
|---|---|---|---|---|
| Dynamic Load Rating (kN) | 23800 | 23800 | 23500 | 23900 |
| Static Load Rating (kN) | 65500 | 65500 | 65300 | 65600 |
| Width (mm) | 790 | 790 | 785 | 790 |
| Bore Diameter (mm) | 760 | 760 | 760 | 761 |
| Outside Diameter (mm) | 1080 | 1080 | 1075 | 1081 |
| Fatigue Load Limit (kN) | 3250 | 3250 | 3200 | 3260 |
| Relubrication Feature | With | With | Without | With |
| Radial Internal Clearance | C4 | C4 | C3 | C4 |
| Tolerance Class | Class 6 (P6) | Class 6 (P6) | Class 5 | Class 6 (P6) |
| Sealing | Without | Without | Without | With |
Recommended Products for Optimal Performance
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Why Amigo 312979 D Bearings Are the Top Choice
The Amigo 312979 D bearing has performed incredibly well in our high-load machinery. It handles stress just as effectively as the SKF bearings we’ve used in the past. Reliable, durable, and cost-effective—an excellent choice for our operations.
William Turner
We’ve been using Amigo 312979 D bearings for a few months now, and they’ve held up just like our old NSK bearings. Their performance and durability are exceptional, making them a top-notch alternative at a better price point.
Emily Lawson
We switched to Amigo 312979 D bearings, and I can’t tell the difference between them and the premium SKF ones we previously used. They’ve been running smoothly, even under extreme conditions. Definitely worth the switch!
Lucas O'Brien
The Amigo 312979 D bearings in our presses work as well as the NACHI ones we used before. They handle heavy loads and high-speed operations effortlessly. The quality is on par with leading brands, and we’re very satisfied with the results.
Vivienne Hughes
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