Constant Section (CS) Bearings NC040AR0

The NC040AR0 is a thin-section angular contact bearing with a 4-inch bore and 4.75-inch outer diameter, featuring durable chrome steel construction. Its compact 0.375-inch width makes it ideal for space-limited applications, while the brass cage ensures smooth operation.

This bearing handles radial loads up to 1153 lbf and thrust loads up to 2770 lbf, with a 30° contact angle for balanced performance. It operates well in temperatures from -30°C to 110°C and comes pre-lubricated for easy installation.

The open design allows for simple maintenance, and the chromium plating adds extra corrosion resistance. It’s interchangeable with KAYDON bearings, offering flexibility for replacements.

Suitable for precision equipment like robotics or optical devices where slim profiles are needed. Weighing just 0.44 lbs, it’s lightweight yet robust for its size, meeting ABEC-1 tolerance standards.

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Description

Features

Application

Q&A

Product Parameters

Part Number NC040AR0
Brand TFL
Interchangeable KAYDON
System of Measurement Inch
Bearing Type Ball
For Load Direction Angular Contact
Construction Single Row
Seal Type Open
Bore Dia 4"
Bore Dia Tolerance -0.0008"– 0"
Outer Dia 4.75"
Outer Dia Tolerance -0.0006"– 0"
Width 0.375"
Width Tolerance +.000 –.005"
Thin Section Bearings Type Endura-kote Plated Bearings
Series NC 3/8" x 3/8"
Tolerance Class ABEC-1
Radial Clearance 0.0000 – 0.0005"
Contact Angle 30°
External Diameter On Inner Ring 4.277"
Internal Diameter On Outer Ring (Small Side Face) 4.473"
Internal Diameter On Outer Ring (Large Side Face) 4.554"
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Brass
Dynamic Radial Load 1153 lbf
Static Radial Load 2550 lbf
Static Thrust Load 2770 lbf
Static Moment 7360 lbf
Temperature Range -30°C to 110 °C
ISO Radial 2520 lbf
Surface Chromium Plating
Lubrication Lubricated
RoHS Compliant
Weight 0.44 lbs
price（$） 112.31

Constant Section (CS) Bearings NC040AR0 dimension drawing

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Features

How Does NC040AR0 Bearing Handle Angular Contact Loads?

NC040AR0 Bearing features a 30° contact angle, optimising its performance for angular contact applications.
The chrome steel rings and balls provide strong resistance to both radial and thrust loads.
With a static thrust load capacity of 2770 lbf, it ensures reliable operation under demanding conditions.
Its brass cage maintains ball alignment, reducing friction and extending service life.

Application

Common Applications of NC040AR0 Bearing
NC040AR0 Bearing works well in industrial robots, especially for joints needing smooth angular movement. Its thin section design saves space without compromising load capacity.

In aerospace applications, NC040AR0 Bearing handles precise movements in control systems. The 30° contact angle provides stability during directional changes.

For medical imaging devices, NC040AR0 Bearing’s chromium plating resists corrosion in sterile environments. Brass cage material reduces friction during high-precision rotations.

Automation equipment benefits from NC040AR0 Bearing’s ABEC-1 tolerance in conveyor tracking systems. Open seal design allows easy lubrication in continuous operation.

3D printers use NC040AR0 Bearing for accurate linear motion control. The chrome steel construction ensures durability during repetitive movements.