21306 Spherical Roller Bearings
| 21306 Spherical Roller Bearings | |||
|---|---|---|---|
| Part Number | 21306 | Weight(Kg) | 0.39 |
| d | 30 | Dynamic Load Co(N) | 55200 |
| D1 | 72 | Static Load Cor(N) | 61000 |
| B | 19 | Grease Speed | 45000 |
| R | 1.1 | Oil Speed | 6000 |
21306 Spherical Roller Bearing | Heavy-Duty Self-Aligning Industrial Bearings
The 21306 spherical roller bearing is a high-load double-row rolling bearing designed for harsh industrial operating conditions. Differing from ball bearings and tapered roller bearings, it adopts a symmetrical spherical roller structure with a concave spherical outer raceway, enabling superior self-aligning performance. It effectively compensates for shaft deflection, installation misalignment and foundation deformation while enduring heavy radial loads and moderate bidirectional axial loads. Featuring exceptional shock resistance and fatigue durability, the 21306 bearing delivers stable low and medium-speed operation, serving as a core load-bearing component for continuous-running heavy industrial machinery.
Common Bearing Material Introduction
21306 spherical roller bearings adopt diverse industrial-grade materials to adapt to different working environments, balancing load capacity, wear resistance and corrosion resistance:
High Carbon Chrome Bearing Steel: The standard mainstream material for 21306 heavy-duty bearings. It boasts ultra-high hardness, outstanding compressive wear resistance and excellent anti-fatigue performance under alternating heavy loads. It maintains stable structural precision during long-term continuous operation, with high cost performance and low failure rate, ideal for most conventional heavy industrial scenarios.
304 Stainless Steel: Offers reliable oxidation and rust-proof properties, adapting to humid, dusty and open-air working environments. It retains stable medium-load bearing capacity, acting as an economical anti-corrosion solution for light heavy-duty equipment and outdoor general industrial machinery.
420 Stainless Steel: Integrates high mechanical hardness and structural toughness, resisting frequent mechanical impact and mild chemical erosion. It effectively prevents structural deformation and precision attenuation, suitable for semi-corrosive factory production equipment.
440C Stainless Steel: Features superior abrasion resistance and dimensional stability, performing excellently in damp and moderately corrosive workshops. It slows down component aging and wear, extending the service life of long-cycle operating mechanical systems.
316 Stainless Steel: Premium corrosion-resistant material with strong salt spray, acid and alkali resistance. It operates stably in harsh marine, chemical and high-humidity environments, perfect for special anti-corrosion industrial equipment configurations.
Core Product Advantages And Industrial Applications
The 21306 spherical roller bearing stands out for its powerful self-aligning capability, super heavy-load capacity, strong shock resistance and low-friction stable operation. Its diverse material options greatly enhance environmental adaptability, covering dry, humid and mildly corrosive working conditions. This bearing is widely applied in mining machinery, industrial fans, cement processing equipment, agricultural heavy machinery, conveyor systems and metallurgical equipment. It provides durable, high-stability and cost-effective load-bearing solutions for heavy-duty industrial mechanical systems that require long-term uninterrupted operation.
