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Double Row Super-Precision Cylindrical Roller Bearings NNU 4932 BK/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NNU 4932 BK/SPW33

The NNU 4932 BK/SPW33 is a double-row cylindrical roller bearing with a 160mm bore and 220mm outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 74250 lbf and runs smoothly at speeds up to 4000 RPM.

Its open design allows for easy lubrication with grease or oil, while the tapered bore ensures a secure fit. The bearing operates well in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a reliable choice for replacements. Ideal for high-precision applications like machine tools or industrial gearboxes where heavy radial and axial loads are present.

Weighing 6.6kg, it’s built to last with a robust double-row design. Compliant with RoHS and REACH standards for safe and eco-friendly use.

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Product Parameters

  • Part Number NNU 4932 BK/SPW33
  • Size 160 mm x 220 mm x 60 mm
  • Brand TFL
  • Interchangeable brand SKF
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • Bore Type Taper 1:12
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Bore Dia 160 mm
  • Bore Dia Tolerance 0 to +0.025mm
  • Outer Dia 220 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 60 mm
  • Width Tolerance -0.25mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 2 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 2 mm
  • Permissible Axial Displacement(max.) 2 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 74250 lbf
  • Static Radial Load 153000 lbf
  • Max Speed 4000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 6.6 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 5.5 mm
  • Diameter Lubrication Hole (outer Ring) (K) 3 mm
  • Shoulder Dia Outer Ring 200.9 mm
  • Raceway Diameter Inner Ring 178.5 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 4932 BK/SPW33 dimension drawing
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Features

Performance Features of NNU 4932 BK/SPW33 Bearing

NNU 4932 BK/SPW33 Bearing is built with chrome steel rings and rollers, offering strong resistance to combined loads.
Its dynamic radial load capacity reaches 74,250 lbf, ensuring reliable performance in demanding conditions.

The double-row design enhances stability and load distribution, making it suitable for precision applications.
With a maximum speed of 4,000 rpm, it balances durability and efficiency.

NNU 4932 BK/SPW33 Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its open design allows for flexible lubrication options, including grease or oil.

The tapered bore design ensures secure fitting and easy installation.
This feature reduces the risk of misalignment during operation.

Application

Industrial Uses of NNU 4932 BK/SPW33 Bearing
NNU 4932 BK/SPW33 Bearing is commonly used in heavy industrial machinery, such as large gearboxes and rolling mills, where its double-row design handles combined radial and axial loads efficiently. The tapered bore ensures a secure fit, reducing slippage during high-speed operations.

In automotive manufacturing, NNU 4932 BK/SPW33 Bearing supports precision components like spindle assemblies, thanks to its high dynamic radial load capacity. Its chrome steel construction also provides excellent durability in demanding environments.

For automation systems, NNU 4932 BK/SPW33 Bearing is ideal for robotic arms and CNC machines, where smooth motion and accuracy are essential. The open seal design allows for easy lubrication, extending the bearing’s service life.

Medical imaging equipment benefits from NNU 4932 BK/SPW33 Bearing’s reliable performance, ensuring minimal vibration during scans. The grease or oil lubrication options make it adaptable to various operational conditions.

In consumer electronics, NNU 4932 BK/SPW33 Bearing can be found in high-end printers, where its precision reduces noise and improves print quality. The metric sizing ensures compatibility with a wide range of devices.

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