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Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 100 B

Super-Precision Axial-Radial Cylindrical Roller Bearings NRT 100 B

The NRT 100 B is a super-precision cylindrical roller bearing, measuring 100mm by 185mm by 38mm, crafted from durable chrome steel. It handles both radial and axial loads, with dynamic ratings of 58.3 kN radially and 68 kN axially.

Its brass cage ensures smooth operation, while the design supports speeds up to 560 r/min with oil-air lubrication. The bearing maintains performance in temperatures from -30°C to 110°C.

With a preload of 1.8 kN and high axial stiffness, it’s ideal for precision machinery like CNC spindles or robotics. The through holes and sinkholes simplify mounting and alignment.

Weighing 3.8kg, it’s robust yet manageable. Compliant with RoHS and REACH standards, it’s a reliable choice for demanding industrial applications.

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Product Parameters

  • Part Number NRT 100 B
  • Size 100 mm x 185 mm x 38 mm
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • For Load Direction Combined
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.010mm to 0
  • Outer Dia 185 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 38 mm
  • Height Tolerance -0.175mm to 0
  • Shoulder Diameter Inner Ring - Large Shoulder 160 mm
  • Outer Ring (Housing Washer) Width 12 mm
  • Distance 25 mm
  • Inner Ring (Shaft/Locating Washer) Hole Pitch Circle Diameter 112 mm
  • Outer Ring (Housing Washer) Hole Pitch Circle Diameter 170 mm
  • Inner Ring (Shaft/Locating Washer) Through Hole 5.6 mm
  • Inner Ring (Shaft Washer) Sinkhole 10 mm
  • Outer Ring (Housing Washer) Through Hole 5.6 mm
  • Inner Ring (Shaft Washer) Sinkhole Depth 5.4 mm
  • Outer Ring (Housing Washer) Chamfer Dimension r1 (min.) 0.6 mm
  • Chamfer Dimension r2 (min.) 0.3 mm
  • Basic Dynamic Load Rating - Radial Direction 58.3 kN
  • Basic Static Load Rating - Radial Direction 116 kN
  • Basic Dynamic Load Rating - Axial Direction 68 kN
  • Attainable Speed For Grease Lubrication 280 r/min
  • Attainable Speed For Oil-Air Lubrication 560 r/min
  • Axial Preload 1.8 kN
  • Axial Unloading Force 3.8 kN
  • Frictional Moment 3 N·m
  • Axial Stiffness For Preload A (sets of two brgs back-to-back or face-to-face) 7500000 kN/µm
  • Axial Stiffness For Preload B (sets of two brgs back-to-back or face-to-face) 3700000 kN/µm
  • Moment Stiffness 15 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 3.8 kg

Features

Performance Features of NRT 100 B Bearing

NRT 100 B Bearing combines axial and radial load handling, making it versatile for complex applications.
Its chrome steel rings and rollers ensure durability under high stress conditions.

The bearing’s basic dynamic load rating reaches 58.3 kN radially and 68 kN axially, providing reliable performance.
Brass cage material enhances stability and reduces wear during operation.

With attainable speeds of 280 r/min for grease and 560 r/min for oil-air lubrication, it offers flexibility.
The temperature range of -30° to 110°C ensures consistent performance in various environments.

NRT 100 B Bearing’s axial stiffness and moment stiffness contribute to precise operation.
Its design minimises frictional moment, improving efficiency and longevity.

Application

Industrial Uses of NRT 100 B Bearing
NRT 100 B Bearing is commonly used in machine tools, where its combined load handling ensures stability during high-precision operations. The brass cage and chrome steel rollers provide durability in demanding industrial environments.

In automotive applications, NRT 100 B Bearing supports gearboxes and drivetrains, handling both radial and axial loads efficiently. Its metric sizing makes it compatible with a variety of European and Asian vehicle designs.

For automation systems, NRT 100 B Bearing is ideal for robotic arms and CNC machines, offering smooth movement under heavy loads. The grease lubrication option ensures low maintenance in continuous operation scenarios.

Medical imaging devices benefit from NRT 100 B Bearing’s precision, as it maintains consistent performance in high-accuracy equipment. The temperature range of -30° to 110°C ensures reliability in various clinical settings.

In heavy machinery, NRT 100 B Bearing excels in applications like construction equipment, where its axial stiffness supports robust performance. The oil-air lubrication option allows for higher speeds in specialised industrial setups.

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