NN 3020 KTN9/UP

 

Dimensions

Bore diameter	100 mm
Outside diameter	150 mm
Width	37 mm

Performance

Basic dynamic load rating	151 kN
Basic static load rating	250 kN
Attainable speed for grease lubrication	5 600 r/min
Attainable speed for oil-air lubrication	6 300 r/min

Properties

Bearing part	Complete bearing
Number of rows	2
Bore type	Tapered 1:12
Cage	Non-metallic
Design	NN
Number of flanges, outer ring	0
Number of flanges, inner ring	3
Loose flange	None
Radial internal clearance	C1
Tolerance class	Class UP (UP)
Material, bearing	Bearing steel
Coating	Without
Sealing	Without
Lubricant	None
Relubrication feature	Without

Logistics

Product net weight	2.1 kg
eClass code	23-05-09-01
UNSPSC code	31171505

NN 3020 KTN9/UP Super-Precision Double Row Cylindrical Roller Bearing

The NN 3020 KTN9/UP is a high-performance super-precision bearing engineered for applications demanding extreme rotational accuracy and rigidity. Its double row cylindrical roller design ensures uniform load distribution, minimizing friction and heat generation even under heavy radial loads. The bearing incorporates a tapered bore (KTN suffix) paired with a precision-ground brass cage (UP suffix), enabling precise axial clearance adjustment during installation. This feature makes it ideal for machine tool spindles, where micron-level precision and stability are critical. Enhanced lubrication grooves and optimized internal geometry further contribute to extended service life in high-speed environments.

Key Advantages for Industrial Use
Designed to meet ABEC-7/P4 tolerance standards, the NN 3020 KTN9/UP excels in applications requiring minimal vibration and noise. The split inner ring design simplifies mounting and dismounting while maintaining concentricity, reducing downtime during maintenance. Its superior stiffness supports complex machining operations such as grinding, milling, and turning, where even minor deflection can compromise surface finish quality. The bearing's preload optimization capability ensures consistent performance across temperature fluctuations, making it suitable for aerospace components, robotics, and medical imaging equipment that operate under variable thermal conditions.

Typical Applications and Industry Fit
Widely adopted in CNC machining centers, the NN 3020 KTN9/UP is the go-to solution for high-stiffness spindle systems requiring speeds exceeding 10,000 RPM. Its ability to handle combined radial and axial loads makes it valuable in gearbox systems for wind turbines and precision reducers for automation lines. In semiconductor manufacturing, the bearing's contamination-resistant design supports vacuum environments and cleanroom protocols. Additionally, its durability under heavy-duty cyclic loads has led to adoption in rotary tables and indexing heads for large-scale milling operations. Compatibility with oil-air or grease lubrication systems ensures flexibility across diverse industrial setups.

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