Description
The SKF NK 40/20 TN Needle Roller Bearing is a high-performance, compact bearing solution engineered for applications requiring high load capacity within limited installation space. Designed without an inner ring, it allows for direct use of hardened and ground shafts as raceways, making it ideal for optimized and space-saving designs.
This bearing features a machined outer ring with two integral flanges, ensuring precise axial guidance of the needle rollers during operation. Its needle roller and cage assembly provides high stiffness and excellent radial load handling, making it suitable for demanding industrial environments.
With a low cross-sectional height, the NK 40/20 TN is perfect for applications where space constraints are critical. It also supports axial displacement in both directions, allowing flexibility in shaft positioning and thermal expansion.
The bearing includes an annular groove with lubrication holes, enabling effective relubrication to extend service life and maintain optimal performance. Built from high-quality bearing steel with a non-metallic cage, it ensures durability, reduced friction, and reliable operation at high speeds up to 11,000 r/min.
Common applications include gearboxes, transmissions, pumps, compressors, and heavy-duty industrial machinery where compactness and high load capacity are essential.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | SKF |
| Product Model | NK 40/20 TN |
| Product Type | Needle Roller Bearing |
| Bearing Design | Without Inner Ring |
| Number of Rows | 1 |
| Bore Diameter | 40 mm |
| Outside Diameter | 50 mm |
| Width | 20 mm |
| Outer Ring Type | Machined (Solid) |
| Number of Flanges | 2 |
| Cage Type | Non-Metallic |
| Material | Bearing Steel |
| Sealing | None |
| Lubrication | None (Relubrication Required) |
| Relubrication Feature | Yes |
| Dynamic Load Rating | 29.7 kN |
| Static Load Rating | 60 kN |
| Reference Speed | 10,000 r/min |
| Limiting Speed | 11,000 r/min |
| Net Weight | 0.076 kg |
| Applications | Gearboxes, Pumps, Compressors, Industrial Machinery |
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