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Double Row Super-Precision Cylindrical Roller Bearings NNU 4930 B/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NNU 4930 B/SPW33

The NNU 4930 B/SPW33 is a double-row cylindrical roller bearing with a 150mm bore and 210mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 74250 lbf and operates smoothly at speeds up to 4000 RPM.

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

This model is interchangeable with SKF bearings, making it a versatile choice for replacements. Ideal for industrial machinery, gearboxes, or applications requiring high precision and load capacity.

Weighing 6.25kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe and reliable use.

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Product Parameters

  • Part Number NNU 4930 B/SPW33
  • Size 150 mm x 210 mm x 60 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 150 mm
  • Bore Dia Tolerance -0.013mm to 0
  • Outer Dia 210 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 147375 lbf
  • Max Speed 4000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 6.25 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 5.5 mm
  • Diameter Lubrication Hole (outer Ring) (K) 3 mm
  • Shoulder Dia Outer Ring 190.9 mm
  • Raceway Diameter Inner Ring 168.5 mm
Double Row Super-Precision Cylindrical Roller Bearings NNU 4930 B/SPW33 dimension drawing
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Features

Performance Features of NNU 4930 B/SPW33 Bearing

NNU 4930 B/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, making it suitable for heavy-duty applications.

The double-row cylindrical design ensures stability and precision in high-speed operations.
With a maximum speed of 4,000 rpm, it delivers reliable performance in demanding conditions.

NNU 4930 B/SPW33 Bearing operates efficiently within a temperature range of -30° to 110°C.
Its open construction allows for easy lubrication with grease or oil, reducing maintenance needs.

The precise tolerances and chamfer dimensions enhance installation and alignment.
This bearing is ideal for applications requiring high radial load capacity and smooth operation.

Application

Industrial Uses of NNU 4930 B/SPW33 Bearing
NNU 4930 B/SPW33 Bearing is commonly used in heavy machinery like lathes and milling machines, where its double-row design handles both radial and axial loads efficiently. The open seal type allows for easy lubrication, ensuring long service life in demanding conditions.

In automotive applications, NNU 4930 B/SPW33 Bearing fits well in gearboxes and drivetrains, providing stability under high-speed rotations. Its chrome steel construction offers durability, making it a reliable choice for vehicle manufacturers.

For automation systems, NNU 4930 B/SPW33 Bearing supports robotic arms and conveyor belts, where precision and load capacity are key. The metric dimensions ensure compatibility with a wide range of industrial equipment.

Medical imaging devices also benefit from NNU 4930 B/SPW33 Bearing’s smooth operation and high load capacity. The grease or oil lubrication options make it adaptable to different operational environments.

In consumer electronics, NNU 4930 B/SPW33 Bearing can be found in high-performance printers and industrial fans. Its balanced design ensures quiet and efficient operation, even under continuous use.

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