NTN, NSK, Koyo Nu205L Cylindrical Roller Bearing is designed for heavy-duty applications in lifting and hauling machinery. It features a robust construction with high radial load capacity, precision engineering for reduced friction, and a separable design (inner/outer rings) for easy installation and maintenance[1][6]. Suitable for high-speed operations and harsh environments.
Ideal for applications requiring axial displacement compensation and reliable performance under heavy radial loads[1].
[1] 圆柱滚子轴承(圆柱滚子和滚道为线接触的轴承)-百科
[3] NU205_圆柱滚子轴承-华轴网
[6] NU205轴承_NACHI轴承NU205尺寸规格参数报价-NACHI轴承型号查询
NTN/NSK/Koyo Nu205L Cylindrical Roller Bearing Key Parameters:
| Parameter | NTN Nu205L | NSK Nu205L | Koyo Nu205L |
|---|---|---|---|
| Inner Diameter (mm) | 25 | 25 | 25 |
| Outer Diameter (mm) | 52 | 52 | 52 |
| Dynamic Load Rating (kN) | 34.5 | 33.8 | 34.2 |
| Static Load Rating (kN) | 24.5 | 23.7 | 24.0 |
| Max Speed (rpm) | 10,000 | 9,800 | 10,200 |
| Material | Chrome Steel | SUJ2 Steel | SAE 52100 |
Note: All models meet ISO 15:2017 standards. NTN offers superior lubrication retention, NSK focuses on noise reduction, and Koyo excels in high-speed stability.
Nu205L bearings are engineered for heavy-load, high-radial-stress environments:
Critical in preventing axial displacement under shock loads up to 5g vibration levels.
Replaced tapered roller bearings with Nu205L in Shanghai Port's STS cranes, reducing maintenance intervals from 800 to 2,500 operational hours.
NSK Nu205L bearings in Zambia copper mine conveyors withstood 90°C ambient temperatures and 85% humidity for 18 months without relubrication.
Challenge: Bearing failures in nacelle yaw systems every 14 months
Solution: Koyo Nu205L with specialty grease (SKF LGWA 2)
Result: 28-month service life, 17% reduction in downtime costs
Problem: Continuous bearing seizure in hot rolling line guides
Implementation: NTN Nu205L + water-cooled housings
Outcome: 94% reliability rate at 600°C radiant heat conditions
Critical selection factors:
| Factor | Checklist |
|---|---|
| Load Analysis | Verify radial/axial load ratio exceeds 5:1 |
| Lubrication | Confirm grease NLGI grade (2 preferred) |
| Certification | Require ISO 9001:2015 + original test reports |
Email: info@vivalr.com
Tel: (86) 15866781826
Provide machine specs, operating conditions (temperature/vibration), and MTBF requirements for optimized bearing solutions.
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