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Double Row Super-Precision Cylindrical Roller Bearings NN 3028 K/SPW33

Double Row Super-Precision Cylindrical Roller Bearings NN 3028 K/SPW33

The NN 3028 K/SPW33 is a double-row cylindrical roller bearing with a 140mm tapered bore and 210mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 66,825 lbf and runs smoothly at speeds up to 5000 RPM.

Its open design allows for easy lubrication with grease or oil, while the double-row construction provides stability under heavy radial loads. The bearing operates efficiently in temperatures 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 accuracy and durability are key.

Weighing 6.15kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NN 3028 K/SPW33
  • 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/SPW33 dimension drawing
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Features

Performance Features of NN 3028 K/SPW33 Bearing

NN 3028 K/SPW33 Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 66,825 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 in demanding conditions.

NN 3028 K/SPW33 Bearing works well in temperatures ranging from -30° to 110°C, adapting to various environments.
The open seal type allows for easy lubrication with grease or oil, reducing maintenance needs.

The tapered bore design simplifies installation, ensuring a secure fit.
Its precision engineering minimises wear, extending the bearing’s service life.

Application

Industrial Uses of NN 3028 K/SPW33 Bearing
NN 3028 K/SPW33 Bearing is commonly used in heavy machinery like lathes and milling machines, where its double-row design handles combined loads with ease. The tapered bore ensures a secure fit, reducing slippage during high-speed operations.

What Makes NN 3028 K/SPW33 Bearing a Preferred Choice?
In automotive applications, NN 3028 K/SPW33 Bearing supports gearboxes and drivetrains, offering reliable performance under dynamic radial loads. Its chrome steel construction ensures durability even in demanding conditions.

Built for Heavy-Duty Use: NN 3028 K/SPW33 Bearing
For automation systems, NN 3028 K/SPW33 Bearing is ideal for robotic arms and CNC machines, providing precise movement and low friction. The open seal design allows for easy lubrication, extending its service life.

Medical vs Industrial: Where NN 3028 K/SPW33 Bearing Excels
In medical imaging devices, NN 3028 K/SPW33 Bearing’s high precision ensures smooth operation, while in industrial settings, it excels in conveyor systems and presses. Its wide temperature range makes it versatile for various environments.

How Does NN 3028 K/SPW33 Bearing Support High-Speed Operations?
NN 3028 K/SPW33 Bearing is designed for applications like turbine generators, where its grease or oil lubrication options maintain performance at speeds up to 5000 rpm. The robust construction minimizes wear over time.

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