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Double Row Super-Precision Cylindrical Roller Bearings NN 3008 KTN/UPVR521

Double Row Super-Precision Cylindrical Roller Bearings NN 3008 KTN/UPVR521

The NN 3008 KTN/UPVR521 is a double-row cylindrical roller bearing with a 40mm tapered bore and 68mm outer diameter, crafted from sturdy chrome steel. It handles combined loads up to 9652 lbf and spins smoothly at speeds up to 15000 RPM.

Its open design allows easy lubrication with grease or oil, while the PA66 cage ensures stable roller alignment. 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 precision applications like machine tools or industrial gearboxes where high radial loads are common.

Weighing just 0.28kg, it’s lightweight yet robust for its size. Compliant with RoHS and REACH standards for safe use.

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Product Parameters

  • Part Number NN 3008 KTN/UPVR521
  • Size 40 mm x 68 mm x 21 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 40 mm
  • Bore Dia Tolerance 0 to +0.012mm
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.006mm to 0
  • Width 21 mm
  • Width Tolerance -0.10mm to 0
  • Chamfer Dimension Outer Ring(r1,2)(min.) 1 mm
  • Chamfer Dimension Inner Ring(r3,4)(min.) 0.6 mm
  • Permissible Axial Displacement(max.) 1.5 mm
  • Ring Material Chrome Steel
  • Roller Material Chrome Steel
  • Dynamic Radial Load 9652 lbf
  • Static Radial Load 12600 lbf
  • Max Speed 15000 rpm
  • Lubrication Grease, Oil
  • Temperature Range -30° to 110 °C
  • RoHS Compliant
  • REACH Compliant
  • Weight 0.28 kg
  • Cage Material PA66 cage, roller centred
Double Row Super-Precision Cylindrical Roller Bearings NN 3008 KTN/UPVR521 dimension drawing
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Features

Performance Features of NN 3008 KTN/UPVR521 Bearing

NN 3008 KTN/UPVR521 Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity of 9652 lbf ensures reliable performance in demanding applications.

The double-row cylindrical design enhances stability and load distribution, making it suitable for precision tasks.
With a maximum speed of 15,000 rpm, it balances efficiency and durability.

NN 3008 KTN/UPVR521 Bearing operates smoothly in temperatures ranging from -30° to 110°C.
The PA66 cage keeps rollers centred, reducing friction and extending service life.

Its open seal design allows for easy lubrication with grease or oil.
The tapered bore ensures secure fitting, minimising axial displacement during operation.

Application

Key Fields for NN 3008 KTN/UPVR521 Bearing
NN 3008 KTN/UPVR521 Bearing is commonly used in industrial machinery, especially in high-speed spindle applications where precision and stability are essential. Its double-row design helps handle combined loads efficiently, making it suitable for machine tools and gearboxes.

In automotive applications, NN 3008 KTN/UPVR521 Bearing supports components like transmissions and differential systems, where its tapered bore ensures secure fitting. The high-speed capability also makes it a reliable choice for performance vehicles.

For automation and robotics, NN 3008 KTN/UPVR521 Bearing provides smooth operation in robotic arms and CNC machines. The chrome steel construction offers durability, while the open design allows for easy lubrication maintenance.

In medical imaging equipment, NN 3008 KTN/UPVR521 Bearing’s precision ensures accurate movement in devices like MRI scanners. The PA66 cage reduces friction, enhancing performance in sensitive environments.

Consumer electronics like high-end printers benefit from NN 3008 KTN/UPVR521 Bearing’s quiet and efficient operation. Its compact size and high load capacity make it ideal for space-constrained applications.

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