N 1019 KTN9/SP

 

Dimensions

d	95 mm	Bore diameter
D	145 mm	Outside diameter
B	24 mm	Width
d1	114.4 mm	Shoulder diameter inner ring
E	132 mm	Raceway diameter outer ring
r1,2	min.1.5 mm	Chamfer dimension
r3,4	min.1 mm	Chamfer dimension
s	max.3 mm	Permissible axial displacement from the normal position of one bearing ring relative to the other (all)

Abutment dimensions

da	min.103 mm	Abutment diameter shaft
Da	min.134 mm	Abutment diameter housing
Da	max.137 mm	Abutment diameter housing
ra	max.1.5 mm	Radius of fillet
dn	129.5 mm	Oil nozzle position (not for variants with TNHA cage)

Calculation data

Basic dynamic load rating	C	84.2 kN
Basic static load rating	C0	116 kN
Fatigue load limit	Pu	14 kN
Attainable speed for grease lubrication		6 700 r/min
Attainable speed for oil-air lubrication		7 500 r/min
Reference grease quantity	Gref	12.5 cm³
Static radial stiffness (guideline value)		1 060 N/µm

N 1019 KTN9/SP Super-Precision Cylindrical Roller Bearing: Features and Benefits
The N 1019 KTN9/SP is a super-precision single-row cylindrical roller bearing engineered for applications demanding extreme radial rigidity and rotational accuracy. Its optimized internal geometry minimizes friction and heat generation, ensuring stable performance at high speeds. The bearing incorporates a high-quality steel cage (designated by "KTN9") for reduced wear and improved lubrication retention, while the "SP" suffix indicates enhanced preload optimization for consistent operation under varying loads. Ideal for machine tool spindles, robotics, and high-speed automation systems, this bearing delivers extended service life even in harsh operating conditions, thanks to its superior material quality and advanced surface finishing.

Technical Design and Performance Enhancements
Precision-ground rollers and raceways in the N 1019 KTN9/SP ensure uniform load distribution, reducing vibration and noise levels critical for sensitive equipment like medical imaging devices or semiconductor manufacturing tools. The bearing's axial displacement capability accommodates thermal expansion in shaft arrangements, preventing premature failure. Its low-torque design supports energy efficiency, making it a preferred choice for industries prioritizing sustainability. Additionally, the inclusion of premium-grade lubricants during assembly further enhances thermal stability, enabling reliable performance in temperatures ranging from -30°C to 150°C (-22°F to 302°F). These features make it a top-tier solution for aerospace guidance systems and electric vehicle drivetrains.

Industry Applications and Versatility
Widely adopted in high-performance sectors, the N 1019 KTN9/SP excels in CNC machining centers for maintaining micron-level tolerances during heavy-duty milling operations. Its ability to handle combined radial and axial loads makes it suitable for precision gearboxes in wind turbines and marine propulsion systems. The bearing's contamination-resistant design also benefits food processing machinery and pharmaceutical packaging lines, where frequent washdowns are required. With customizable clearance and preload options, engineers can fine-tune this component for specific applications, from optical lens positioning stages to 3D printing equipment, ensuring optimal alignment and repeatability across industries.

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