Timken NJ217EMA MB Cylindrical Roller Bearing

Description

The Timken NJ217EMA MB is a single-row cylindrical roller bearing designed for superior performance in demanding industrial applications. It is engineered to accommodate high radial loads and high speeds. The NJ configuration allows the bearing to locate the shaft axially in one direction. Its robust machined brass cage provides excellent guidance for the rollers, ensuring stability and reliability even under heavy loads and vibrations.

Specifications

• Manufacturer: Timken
• Model: NJ217EMA MB
• Type: Cylindrical Roller Bearing
• Bore Diameter: 85 mm
• Outer Diameter: 150 mm
• Width: 28 mm
• Cage Material: Machined Brass, Inner Ring Guided (MB)
• Design: Enhanced Internal Geometry (EMA)

Label Info

• Part Number: NJ217EMA
• Markings: TIMKEN NJ217EMA MB

Application

This bearing is suitable for a wide range of applications including industrial gearboxes, pumps, compressors, electric motors, and heavy machinery where high radial load capacity and speed are required.

Country of Origin

Information not available on the product or packaging.

CO2 Impact

Opting for this component saves approximately 4.6 kg of CO2 compared to manufacturing a new one, contributing to a more sustainable industrial process.

Availability

This item is in stock and ready for immediate dispatch. Order now from PLC2Day for expert support and fast delivery.

FAQ

The 'EMA' suffix indicates an optimized internal design for higher load capacity and a machined brass cage. The 'MB' specifically denotes that this machined brass cage is guided by the inner ring. This combination ensures robust performance, especially in demanding conditions with high speeds and vibrations.

The choice of lubrication (oil or grease) depends heavily on the operating speed, load, and temperature. For high-speed applications, oil lubrication is often preferred for better heat dissipation. For moderate speeds, a high-quality lithium complex grease is suitable. Always consult your equipment manufacturer's manual for specific recommendations.

No, cylindrical roller bearings like the NJ217EMA MB have very limited tolerance for angular misalignment. Any significant misalignment can cause edge loading on the rollers, leading to premature bearing failure. It is critical that the shaft and housing bores are accurately aligned during installation.

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Last Update: Friday, March 13, 2026