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

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

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

Its open design allows for easy lubrication with grease or oil, while the PA66 cage ensures smooth operation. 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 applications like machine tools or industrial gearboxes where high radial and axial loads are present.

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

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Product Parameters

  • Part Number NN 3008 KTN/UP
  • 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/UP dimension drawing
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Features

Performance Features of NN 3008 KTN/UP Bearing

NN 3008 KTN/UP Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 9652 lbf, ensuring reliable operation in demanding conditions.

The double-row cylindrical design enhances stability and load distribution, improving overall performance.
With a maximum speed of 15,000 rpm, it delivers both durability and efficiency.

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

The open seal design allows for easy lubrication with grease or oil, minimising maintenance needs.
Precision tolerances ensure consistent performance, even in high-speed applications.

Application

Industrial Uses of NN 3008 KTN/UP Bearing
NN 3008 KTN/UP Bearing is commonly used in machine tools, where its double-row design handles both radial and axial loads efficiently. The high-speed capability makes it suitable for spindle applications in CNC machines.

In automotive systems, NN 3008 KTN/UP Bearing supports gearboxes and drivetrains, ensuring smooth operation under combined loads. Its tapered bore allows for precise mounting, which is essential for maintaining alignment in high-performance vehicles.

For automation equipment, NN 3008 KTN/UP Bearing’s chrome steel construction provides durability in robotic arms and conveyor systems. The open design facilitates easy lubrication, extending the bearing’s service life in continuous operation.

Medical applications benefit from NN 3008 KTN/UP Bearing’s precision, particularly in imaging devices where minimal vibration is critical. The PA66 cage material ensures quiet operation, ideal for sensitive medical environments.

In consumer electronics, NN 3008 KTN/UP Bearing can be found in high-speed printers and scanners, where its reliability ensures consistent performance. The compact size and metric dimensions make it a versatile choice for various electronic devices.

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