ZKL NU/NJ315 Cylindrical Roller Bearing NUNJ315

Description:

The ZKL NU/NJ315 Cylindrical Roller Bearing (variants: NU315, NJ315, C3 clearance) is used in industrial rotating systems to support high radial loads while allowing axial displacement of the shaft relative to the housing. Commonly installed in electric motors, gearboxes, machine tools, and heavy-duty industrial equipment requiring high rigidity and load capacity. Maintenance teams, mechanical engineers, and system integrators use this part for repair, retrofit, or replacement to ensure stable operation and extended equipment life.

Applications:

The ZKL NU315 and NJ315 bearings are widely used in heavy industrial applications such as large electric motors, pumps, rolling mills, conveyors, and gear drives where high radial load capacity and thermal expansion compensation are required. NJ-type bearings support limited axial load in one direction, while NU-type allows axial movement in both directions, making them ideal for shaft expansion applications in high-load environments.

Technical Specifications:

• Manufacturer: ZKL / ZVL
• Model / Part Number: NU315 / NJ315 (variants include C3 clearance, CSFR, etc.)
• Product Type: Single Row Cylindrical Roller Bearing
• Bore Diameter (d): 75 mm
• Outer Diameter (D): 160 mm
• Width (B): 37 mm
• Bearing Type: Cylindrical roller (NU or NJ design)
• Internal Clearance: C3 (greater than normal, for thermal expansion)
• Dynamic Load Rating: ~178 kN
• Static Load Rating: ~178 kN
• Reference Speed: ~3800 rpm (grease), ~4500 rpm (oil)
• Function: High radial load support with axial displacement capability
• Material: Bearing-grade steel
• Weight: Approx. 3.3–3.4 kg

Common Replacements:

• SKF NU315 ECP Cylindrical Roller Bearing
• FAG NJ315-E-TVP2 Cylindrical Roller Bearing
• NSK NU315 EMC3 Cylindrical Roller Bearing