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Double Row Super-Precision Cylindrical Roller Bearings NN 3028 K/SPW33VR5220

Double Row Super-Precision Cylindrical Roller Bearings NN 3028 K/SPW33VR5220

The NN 3028 K/SPW33VR5220 is a double-row cylindrical roller bearing with a 140mm bore and 210mm outer diameter, crafted from robust chrome steel. It handles combined loads up to 66,825 lbf radially and spins smoothly at speeds up to 5000 RPM.

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

This model is interchangeable with SKF bearings, making it a practical choice for replacements. Ideal for heavy-duty applications like machine tools or industrial gearboxes where precision and durability are key.

Weighing 6.15kg, it’s built to last with a double-row design for added stability. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NN 3028 K/SPW33VR5220
  • Size 140 mm x 210 mm x 53 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 140 mm
  • Bore Dia Tolerance 0 to +0.025mm
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.015mm to 0
  • Width 53 mm
  • Width Tolerance -0.25mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 2 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 1.1 mm
  • Permissible Axial Displacement(max.) 2.5 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 66825 lbf
  • Static Radial Load 117000 lbf
  • Max Speed 5000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 6.15 kg
  • Width Annular Lubrication Groove Outer Ring(B1) 8.75 mm
  • Diameter Lubrication Hole (outer Ring) (K) 4.5 mm
Double Row Super-Precision Cylindrical Roller Bearings NN 3028 K/SPW33VR5220 dimension drawing
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Features

Performance Features of NN 3028 K/SPW33VR5220 Bearing

NN 3028 K/SPW33VR5220 Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 66,825 lbf, ensuring stability in demanding applications.

The double-row cylindrical design enhances load distribution, reducing stress on individual rollers.
With a maximum speed of 5,000 rpm, it delivers reliable performance for precision tasks.

NN 3028 K/SPW33VR5220 Bearing operates efficiently in temperatures from -30° to 110°C.
Its open seal type allows for easy lubrication with grease or oil, extending service life.

The tapered bore design ensures secure fitting, minimising slippage during operation.
Precision tolerances on bore and outer diameters guarantee consistent performance.

Application

Industrial Uses of NN 3028 K/SPW33VR5220 Bearing
NN 3028 K/SPW33VR5220 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, making it suitable for high-speed operations up to 5000 rpm.

In automotive applications, NN 3028 K/SPW33VR5220 Bearing is found in gearboxes and drivetrains, providing reliable performance under combined loads. Its chrome steel construction ensures durability even in demanding conditions.

For automation systems, NN 3028 K/SPW33VR5220 Bearing supports robotic arms and precision equipment, where its tapered bore design enhances alignment accuracy. The grease or oil lubrication options offer flexibility for different operational needs.

Where Is NN 3028 K/SPW33VR5220 Bearing Used?
NN 3028 K/SPW33VR5220 Bearing is ideal for wind turbines, where its high dynamic radial load capacity (66825 lbf) ensures long-term reliability. The temperature range of -30° to 110°C makes it adaptable to various environmental conditions.

In medical imaging devices, NN 3028 K/SPW33VR5220 Bearing’s precision engineering contributes to smooth and quiet operation. The stainless steel cage material adds to its resistance against wear in continuous-use scenarios.

Built for Heavy-Duty Use: NN 3028 K/SPW33VR5220 Bearing
NN 3028 K/SPW33VR5220 Bearing excels in construction equipment like cranes and excavators, thanks to its static radial load capacity of 117000 lbf. The annular lubrication groove ensures consistent performance even under heavy loads.

For consumer electronics, NN 3028 K/SPW33VR5220 Bearing is used in high-end printers and scanners, where its precision reduces vibration and noise. The metric sizing makes it compatible with a wide range of international standards.

Automotive vs Aerospace: Applications of NN 3028 K/SPW33VR5220 Bearing
In automotive systems, NN 3028 K/SPW33VR5220 Bearing is favoured for its ability to handle combined loads in transmissions. Its grease lubrication option simplifies maintenance in vehicle applications.

In aerospace, NN 3028 K/SPW33VR5220 Bearing’s high-speed capability and temperature resistance make it suitable for auxiliary power units. The tapered bore design ensures secure fitting in critical components.

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