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Double Row Super-Precision Cylindrical Roller Bearings NNU 4924 B/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NNU 4924 B/SPW33

The NNU 4924 B/SPW33 is a double-row cylindrical roller bearing with a 120mm bore and 165mm outer diameter, crafted from robust chrome steel. It handles combined loads up to 39600 lbf and operates smoothly at speeds up to 5000 RPM.

Its open design allows easy lubrication with grease or oil, while the double-row construction ensures stability under heavy loads. The bearing performs reliably in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for precision machinery like gearboxes or industrial equipment where high radial and axial loads are present.

Weighing 2.8kg, it’s a sturdy option for demanding applications. Compliant with RoHS and REACH standards for safe and sustainable use.

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Product Parameters

  • Part Number NNU 4924 B/SPW33
  • Size 120 mm x 165 mm x 45 mm
  • Brand TFL
  • Interchangeable brand SKF
  • System of Measurement Metric
  • Roller Bearing Type Cylindrical
  • Bore Type Cylindrical
  • For Load Direction Combined
  • Construction Double Row
  • Seal Type Open
  • Bore Dia 120 mm
  • Bore Dia Tolerance -0.010mm to 0
  • Outer Dia 165 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 45 mm
  • Width Tolerance -0.20mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 1.1 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 1.1 mm
  • Permissible Axial Displacement(max.) 1.1 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 39600 lbf
  • Static Radial Load 76500 lbf
  • Max Speed 5000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 2.8 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 5.5 mm
  • Diameter Lubrication Hole (outer Ring) (K) 3 mm
  • Shoulder Dia Outer Ring 150.5 mm
  • Raceway Diameter Inner Ring 134.5 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 4924 B/SPW33 dimension drawing
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Features

Performance Features of NNU 4924 B/SPW33 Bearing

NNU 4924 B/SPW33 Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 39,600 lbf, making it suitable for heavy-duty applications.

The double-row design enhances stability and load distribution, ensuring smooth operation.
With a maximum speed of 5,000 rpm, it balances performance and durability.

NNU 4924 B/SPW33 Bearing operates efficiently in temperatures ranging from -30° to 110°C.
Its open design allows for easy lubrication with grease or oil, reducing maintenance needs.

The precision-engineered raceway minimises friction, extending the bearing’s service life.
Its cylindrical bore type ensures a secure fit, enhancing reliability in various applications.

Application

Industrial Uses of NNU 4924 B/SPW33 Bearing
NNU 4924 B/SPW33 Bearing is commonly used in heavy industrial machinery, such as large lathes and milling machines, where its double-row design handles combined loads efficiently. The open seal type allows for easy lubrication, ensuring long service life in demanding conditions.

What Makes NNU 4924 B/SPW33 Bearing a Preferred Choice?
In automotive manufacturing, NNU 4924 B/SPW33 Bearing supports high-precision components like gear shafts and differential systems. Its chrome steel construction provides excellent durability, even under continuous high-speed operation.

Perfect Fit for Automation: NNU 4924 B/SPW33 Bearing
For robotic arms and automated production lines, NNU 4924 B/SPW33 Bearing offers reliable performance with minimal maintenance. The grease or oil lubrication options make it adaptable to various operational environments.

Medical vs Industrial: Where NNU 4924 B/SPW33 Bearing Excels
While NNU 4924 B/SPW33 Bearing excels in industrial settings, it also finds use in medical imaging devices where precision is key. The tight tolerances ensure smooth rotation, critical for accurate diagnostics.

Where Is NNU 4924 B/SPW33 Bearing Used?
In wind turbines, NNU 4924 B/SPW33 Bearing handles radial and axial loads from rotor blades, thanks to its robust design. The wide temperature range also makes it suitable for outdoor applications in varying climates.

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