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Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 80 B

Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 80 B

The NRT 80 B is a super-precision cylindrical roller bearing, measuring 80mm by 146mm by 35mm, crafted from durable chrome steel. It handles both radial and axial loads, with dynamic ratings of 55kN and 37.5kN respectively.

Its brass cage ensures smooth operation, while the design supports speeds up to 700 r/min with oil-air lubrication. The bearing also features precise axial stiffness, making it stable under heavy loads.

With a temperature range of -30°C to 110°C, it’s suitable for demanding environments like machine tools or industrial gearboxes. Compliant with RoHS and REACH standards, it’s a reliable choice for high-precision applications.

Weighing 2.3kg, it balances strength and precision for long-lasting performance. The through-hole design simplifies installation and maintenance.

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Product Parameters

  • Part Number NRT 80 B
  • Size 80 mm x 146 mm x 35 mm
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Bore Dia 80 mm
  • Bore Dia Tolerance -0.009mm to 0
  • Outer Dia 146 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 35 mm
  • Height Tolerance -0.175mm to 0
  • Shoulder Diameter Inner Ring - Large Shoulder 130 mm
  • Outer Ring (Housing Washer) Width 12 mm
  • Distance 23.35 mm
  • Inner Ring (Shaft/Locating Washer) Hole Pitch Circle Diameter 92 mm
  • Outer Ring (Housing Washer) Hole Pitch Circle Diameter 138 mm
  • Inner Ring (Shaft/Locating Washer) Through Hole 5.6 mm
  • Inner Ring (Shaft Washer) Sinkhole 10 mm
  • Outer Ring (Housing Washer) Through Hole 4.6 mm
  • Inner Ring (Shaft Washer) Sinkhole Depth 4 mm
  • Outer Ring (Housing Washer) Chamfer Dimension r1 (min.) 0.3 mm
  • Chamfer Dimension r2 (min.) 0.3 mm
  • Basic Dynamic Load Rating - Radial Direction 55 kN
  • Basic Static Load Rating - Radial Direction 102 kN
  • Basic Dynamic Load Rating - Axial Direction 37.5 kN
  • Attainable Speed For Grease Lubrication 350 r/min
  • Attainable Speed For Oil-Air Lubrication 700 r/min
  • Axial Preload 1.3 kN
  • Axial Unloading Force 2.8 kN
  • Frictional Moment 3 N·m
  • Axial Stiffness For Preload A (sets of two brgs back-to-back or face-to-face) 5000000 kN/µm
  • Axial Stiffness For Preload B (sets of two brgs back-to-back or face-to-face) 3100000 kN/µm
  • Moment Stiffness 7 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 2.3 kg

Features

Engineered for Precision: NRT 80 B Bearing

NRT 80 B Bearing combines axial and radial load handling, making it versatile for complex applications.
Its chrome steel construction ensures durability and resistance to wear under heavy loads.

With a basic dynamic load rating of 55 kN radially and 37.5 kN axially, it performs reliably in demanding conditions.
The brass cage maintains roller alignment, reducing friction and extending service life.

NRT 80 B Bearing operates smoothly in temperatures from -30° to 110°C, suitable for varied environments.
Grease or oil lubrication options provide flexibility, depending on operational needs.

The bearing’s axial stiffness reaches 5,000,000 kN/µm, ensuring stability under preload conditions.
Its compact design (80 mm x 146 mm x 35 mm) fits efficiently into space-constrained applications.

Application

Industrial Uses of NRT 80 B Bearing
NRT 80 B Bearing is commonly used in machine tools, where its combined load handling capability ensures smooth operation during high-precision machining. The brass cage and chrome steel construction provide durability in demanding industrial environments.

How Does NRT 80 B Bearing Improve Performance?
In automotive applications like gearboxes, NRT 80 B Bearing offers reliable support for both axial and radial loads. Its grease lubrication option makes it suitable for long-term use without frequent maintenance.

Built for Heavy-Duty Use: NRT 80 B Bearing
This bearing excels in heavy machinery, such as conveyor systems, where its high dynamic load rating ensures consistent performance. The metric sizing also allows for easy integration into various equipment designs.

Medical vs Industrial: Where NRT 80 B Bearing Excels
While NRT 80 B Bearing is robust enough for industrial presses, its precision also makes it suitable for medical imaging devices. The temperature range ensures reliability in both sterile and high-heat environments.

Automation and Robotics: NRT 80 B Bearing in Action
In robotic arms, NRT 80 B Bearing provides the necessary stiffness and load capacity for precise movements. The oil-air lubrication option allows for higher speeds in automated production lines.

Q&A

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