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Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 395 B

Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 395 B

The NRT 395 B is a super-precision cylindrical roller bearing with a 395mm bore and 525mm outer diameter, designed for combined axial and radial loads. Made from chrome steel, it offers high durability and can handle dynamic loads up to 166 kN axially and 147 kN radially.

Its brass cage ensures smooth operation, while the grease or oil lubrication options allow speeds of up to 180 r/min. The bearing’s axial stiffness and moment stiffness make it suitable for high-precision applications.

With a temperature range of -30°C to 110°C, it performs reliably in various environments. The bearing’s design includes through holes and sinkholes for easy mounting and maintenance.

Ideal for heavy machinery and industrial equipment where precision and load capacity are crucial. Compliant with RoHS and REACH standards, it’s a robust choice for demanding applications. Weighing 33kg, it’s built for long-term performance.

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Product Parameters

  • Part Number NRT 395 B
  • Size 395 mm x 525 mm x 65 mm
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Bore Dia 395 mm
  • Bore Dia Tolerance -0.023mm to 0
  • Outer Dia 525 mm
  • Outer Dia Tolerance -0.028mm to 0
  • Width 65 mm
  • Height Tolerance -0.40mm to 0
  • Shoulder Diameter Inner Ring - Large Shoulder 486 mm
  • Outer Ring (Housing Washer) Width 20 mm
  • Distance 42.5 mm
  • Inner Ring (Shaft/Locating Washer) Hole Pitch Circle Diameter 415 mm
  • Outer Ring (Housing Washer) Hole Pitch Circle Diameter 505 mm
  • Inner Ring (Shaft/Locating Washer) Through Hole 9.3 mm
  • Inner Ring (Shaft Washer) Sinkhole 15 mm
  • Outer Ring (Housing Washer) Through Hole 9.3 mm
  • Inner Ring (Shaft Washer) Sinkhole Depth 8.2 mm
  • Outer Ring (Housing Washer) Chamfer Dimension r1 (min.) 1 mm
  • Chamfer Dimension r2 (min.) 1 mm
  • Basic Dynamic Load Rating - Radial Direction 147 kN
  • Basic Static Load Rating - Radial Direction 530 kN
  • Basic Dynamic Load Rating - Axial Direction 166 kN
  • Attainable Speed For Grease Lubrication 90 r/min
  • Attainable Speed For Oil-Air Lubrication 180 r/min
  • Axial Preload 14 kN
  • Axial Unloading Force 30 kN
  • Frictional Moment 55 N·m
  • Axial Stiffness For Preload A (sets of two brgs back-to-back or face-to-face) 34600000 kN/µm
  • Axial Stiffness For Preload B (sets of two brgs back-to-back or face-to-face) 10600000 kN/µm
  • Moment Stiffness 694 kN·m/mrad
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Cage Material Brass
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 33 kg

Features

How Is NRT 395 B Bearing Engineered for Reliability?

NRT 395 B Bearing combines chrome steel rings and rollers, ensuring strength under combined radial and axial loads.
Its basic dynamic load ratings of 147 kN (radial) and 166 kN (axial) make it suitable for demanding industrial applications.
The brass cage maintains roller alignment, reducing friction and wear during operation.
With options for grease or oil-air lubrication, it adapts to various operational needs.

What Makes NRT 395 B Bearing Suitable for High-Temperature Applications?

NRT 395 B Bearing operates reliably in temperatures ranging from -30° to 110 °C.
Its chrome steel construction resists thermal deformation, maintaining precision under heat.
The brass cage further enhances thermal stability, ensuring consistent performance.
This makes it ideal for machinery exposed to fluctuating temperatures.

Designed for Durability: NRT 395 B Bearing

NRT 395 B Bearing features a robust cylindrical roller design, handling heavy loads with ease.
Its axial stiffness reaches 34,600,000 kN/µm, providing exceptional resistance to deformation.
The precise tolerances (-0.023mm to 0 for bore diameter) ensure a perfect fit in assemblies.
With a weight of 33 kg, it balances strength and manageability for industrial use.

Application

Industrial Uses of NRT 395 B Bearing
NRT 395 B Bearing is commonly used in heavy industrial machinery, such as large lathes and milling machines, where its combined load capacity handles both radial and axial forces efficiently. The brass cage ensures smooth operation even under high stress.

In wind turbine systems, NRT 395 B Bearing supports the main shaft, providing stability and reducing friction during rotation. Its grease lubrication option makes it suitable for remote or hard-to-access locations.

For railway applications, NRT 395 B Bearing is found in axle boxes, where its high dynamic load rating ensures durability over long distances. The chrome steel construction also resists wear in demanding environments.

How Does NRT 395 B Bearing Improve Performance?
NRT 395 B Bearing enhances precision in machine tools by minimising deflection during high-load operations. Its axial stiffness helps maintain accuracy in cutting and shaping processes.

In hydraulic presses, NRT 395 B Bearing reduces vibration, leading to smoother operation and longer equipment life. The oil-air lubrication option allows for higher speeds when needed.

Built for Heavy-Duty Use: NRT 395 B Bearing
NRT 395 B Bearing is ideal for steel rolling mills, where its moment stiffness prevents misalignment under extreme loads. The large bore diameter accommodates heavy shafts commonly used in this industry.

In mining equipment, NRT 395 B Bearing withstands harsh conditions while maintaining performance. Its temperature range ensures reliability in both hot and cold operating environments.

Automotive vs Aerospace: Applications of NRT 395 B Bearing
In automotive testing rigs, NRT 395 B Bearing provides precise load measurement capabilities. Its frictional moment characteristics help simulate real-world conditions accurately.

For aircraft landing gear mechanisms, NRT 395 B Bearing offers the necessary load capacity in compact spaces. The preload adjustment feature allows for fine-tuning in critical flight systems.

Q&A

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