NK35/20 35x45x20mm Needle Roller Bearing
NK35/20 Needle Roller Bearing – 35x45x20mm, Machined Ring, High Radial Load Capacity. Heavy-duty single-row needle roller bearing without inner ring. Compact radial cross-section, direct press-fit shaft mounting. Ideal for gearboxes, transmission systems, パンプス, compressors, industrial machinery, and heavy equipment where space is limited but load demands are high.
モデル: NK35/20
Bore Diameter (Fw): 35 mm / 1.378 で
外径 (D): 45 mm / 1.772 で
幅 (C): 20 mm / 0.787 で
Minimum Chamfer Dimension (rmin): 0.3 mm
Precision Class: Normal (P0) – general-purpose accuracy, suitable for standard industrial precision requirements
Radial Clearance Class: CN – standard internal clearance for normal operating conditions
NK35/20 Needle Roller Bearing – Maximum Load Capacity in Minimal Radial Space
The NK35/20 Needle Roller Bearing is a single-row caged needle roller bearing engineered specifically for applications where radial space is minimal but high radial load capacity and operational rigidity are non-negotiable.
主な特長:
Minimal Radial Cross-Section
The NK35/20 is a needle roller bearing without an inner ring. Instead, the hardened shaft (with a diameter of 35 mm) directly serves as the inner raceway. The elimination of the inner ring radically reduces the bearing’s radial cross-section. For applications where radial space is at an absolute premium, the NK35/20 opens design possibilities that would be impossible with standard bearings.高剛性, 精度, and Speed Capability
Unlike drawn-cup needle roller bearings (which use a stamped outer shell), the NK35/20 features a machined (solid) outer ring. Machined rings are significantly more rigid than drawn-cup designs. This enhanced rigidity allows the NK35/20 to accommodate higher loads and higher speeds while maintaining tighter running accuracy. The machined outer ring is precision-ground on both the outer raceway and the outer cylindrical surface, ensuring consistent, reliable performance even under demanding operating conditions.低摩擦, High Speed
The NK35/20 is available in multiple cage configurations. The TV suffix designates a PA66 plastic cage (glass-fiber reinforced polyamide), which offers a combination of low friction, excellent centrifugal-force characteristics, high durability, and good chemical resistance to most industrial lubricants. The PA66 plastic cage also contributes to quieter bearing operation compared to full-complement designs and reduces the risk of roller skewing at high speeds.- High Radial Load Capacity
With a dynamic load rating (Cr) ranging from 26.1 kN to 31.0 kN and a static load rating (C0r) from 44.4 kN to 48.5 kN (depending on manufacturer), the NK35/20 delivers an exceptionally high radial load capacity for its compact size. These load ratings make the bearing suitable for demanding applications where heavy radial loads, shock loads, and vibration are routine. - High Speed
With an oil-lubricated limiting speed of up to 12,900 RPM, the NK35/20 offers excellent high speed capability. In grease-lubricated configurations, the limiting speed is approximately 8,000 RPM. This speed performance makes the bearing suitable for high speed gearboxes, industrial spindles, and pump applications where rotational speed is a critical performance parameter.
アプリケーション
The NK35/20 needle roller bearing is a versatile component found across numerous high-demand industries:
Automotive Transmissions & Gearboxes
Industrial Gearboxes and Reducers
Pumps and Compressors
産業機械
Heavy Equipment
- Robotics and Automation
- Engines and Connecting Rods
- Marine Equipment
- Renewable Energy
The NK35/20 Needle Roller Bearing provides maximum radial load capacity in a minimal radial space. Its single-row design eliminates the inner ring, using the hardened shaft directly as the raceway. As a result, it saves space while maintaining operational rigidity, making it ideal for automotive gearboxes, industrial machinery, パンプス, and compressors.
The machined outer ring delivers high precision and rigidity. さらに, the PA66 plastic cage reduces friction, improves durability, and ensures quieter operation at high speeds. さらに, this design prevents roller skewing, maintaining stable performance even under shock loads and vibration.
The NK35/20 operates at speeds up to 12,900 RPM in oil-lubricated configurations and 8,000 RPM with grease. したがって, it suits high-speed gearboxes, spindles, and pump applications where rotational accuracy is critical.
さらに, XCCZC Bearing provides OEM customization and strict quality control. したがって, the NK35/20 Needle Roller Bearing combines compact design, high load capacity, and reliability for demanding industrial, 自動車, and renewable energy applications.
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