Double Row Super-Precision Cylindrical Roller Bearings NN 3021 KTN9/SP

The NN 3021 KTN9/SP is a double-row cylindrical roller bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. It handles combined loads up to 42750 lbf and reaches speeds of 6000 RPM.

Its precision design includes a tapered bore for secure fitting, while the PA66 cage ensures smooth operation. The open seal allows easy lubrication with grease or oil.

This bearing suits high-precision applications like machine tools or spindles, where stability is key. It works in temperatures from -30°C to 110°C.

Weighing 2.7kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, it’s interchangeable with SKF bearings for easy replacement.

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Description

Features

Application

Q&A

Product Parameters

Part Number NN 3021 KTN9/SP
Size 105 mm x 160 mm x 41 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 105 mm
Bore Dia Tolerance 0 to +0.020mm
Outer Dia 160 mm
Outer Dia Tolerance -0.013mm to 0
Width 41 mm
Width Tolerance -0.20mm 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 mm
Ring Material Chrome Steel
Roller Material Chrome Steel
Dynamic Radial Load 42750 lbf
Static Radial Load 68625 lbf
Max Speed 6000 rpm
Lubrication Grease, Oil
Temperature Range -30° to 110 °C
RoHS Compliant
REACH Compliant
Weight 2.7 kg
Cage Material PA66 cage, roller centred

Double Row Super-Precision Cylindrical Roller Bearings NN 3021 KTN9/SP dimension drawing

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Features

Performance Features of NN 3021 KTN9/SP Bearing

NN 3021 KTN9/SP Bearing is built with chrome steel rings and rollers, offering high resistance to combined loads.
Its dynamic radial load capacity reaches 42,750 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 6,000 rpm, it balances performance and durability.

NN 3021 KTN9/SP Bearing operates efficiently in temperatures ranging from -30° to 110°C.
The PA66 cage keeps rollers centred, reducing friction and extending service life.

Its open design allows for easy lubrication with grease or oil, minimising maintenance needs.
The tapered bore ensures secure fitting, enhancing reliability in high-precision tasks.

Application

Industrial Uses of NN 3021 KTN9/SP Bearing
NN 3021 KTN9/SP 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 tapered bore ensures a secure fit, reducing slippage during high-speed operations.

Where Is NN 3021 KTN9/SP Bearing Used?
In automotive manufacturing, NN 3021 KTN9/SP Bearing supports gearboxes and drivetrains, offering reliable performance under combined loads. Its chrome steel construction ensures durability even in demanding conditions.

Built for Heavy-Duty Use: NN 3021 KTN9/SP Bearing
For automation systems, NN 3021 KTN9/SP Bearing is ideal for robotic arms and precision equipment, thanks to its high-speed capability and minimal axial displacement. The open design allows for easy lubrication, extending service life.

Medical vs Industrial: Where NN 3021 KTN9/SP Bearing Excels
In medical imaging devices, NN 3021 KTN9/SP Bearing provides smooth rotation, essential for accurate diagnostics. Meanwhile, in industrial settings, it excels in conveyor systems, where its load capacity and speed ratings are crucial.

Practical Applications of NN 3021 KTN9/SP Bearing
NN 3021 KTN9/SP Bearing is a go-to choice for wind turbines, where its ability to handle dynamic loads ensures consistent performance. The grease or oil lubrication options make it adaptable to various environmental conditions.