K14020AR0

K14020AR0 Constant Section (CS) Bearings
$166.64 /Each    info

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Overview

Part Number K14020AR0
Brand: LILY Brand: LILY Interchangeable With: KAYDON
Other Part Number Variant Models

Characteristics

System of Measurement Metric
Bearing Type Ball
Seal Type Open
Thin Section Bearings Type Reali-Slim mm Metric Bearings
For Load Direction Angular Contact
Construction Single Row
Tolerance Class ABEC-1
Series 20 mm

Dimensions

Bore Dia 140 mm
Bore Dia Tolerance -0.025mm to 0
Outer Dia 180 mm
Outer Dia Tolerance -0.025mm to 0
Width 20 mm
Width Tolerance -.254mm- 0mm
Contact Angle 30 °
External Diameter On Inner Ring 155 mm
Internal Diameter On Outer Ring (Small Side Face) 165 mm
Internal Diameter On Outer Ring (Large Side Face) 170 mm
Radial Clearance 0.0000 – 0.0005"

Material

Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Brass

Performance

Dynamic Radial Load 4907 lbf
Static Radial Load 9440 lbf
Static Thrust Load 11309 lbf
Static Moment 27253 lbf
ISO Radial 7549 lbf
Temperature Range -30°C to 110 °C

Properties

Lubrication Lubricated
RoHS Compliant
Weight 1.11 kg
1 ISO Radial ratings are calculated per ISO 281:1990. They are included for comparison only.
K14020AR0 Constant Section (CS) Bearings data sheet
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CAD1
INTERCHANGE
The LILY Bearing part series K14020AR0 is a potential replacement for these common bearing part numbers.
LILY
LK14020AR0
KAYDON
K14020AR0

NOTE:All other trademarks are the property of their respective owners.

All other trademarks mentioned herein are used for the purpose of compatibility description and product identification only. Lily Bearing is not affiliated with, endorsed by, or sponsored by the holders of these trademarks.

Variant Models

Derived models are generated by adding 7-9 suffix characters to the base model.You can search for the model you need!

This series of models is also available for sale on our website. For detailed information, please feel free to contact us!

Position 7 - Bearing Type
Position 8 - Cage
Position 9 - Tolerance
Position 10 - Bearing internal clearance or preload
X
Position 7 - Bearing Type
A Angular contact ball bearing (not ground for universal matching)
C Radial contact ball bearing
X Four-point contact ball bearing
Position 8 - Cage
P One-piece, snap-type, stamped brass or non-metallic composite cage
R One-piece, circular pocket, stamped brass or non-metallic composite cage
Position 9 - Tolerances (ABEC specifications are in accordance with ABMA standard 26.2)
0 Tolerance to Kaydon class 1 (ABEC 1F)
Position 10 - Bearing internal clearance or preload
Radial clearance or preload for radial contact and four-point contact ball bearings
Axial clearance or preload for matched angular contact ball bearings
Values below are valid for unmounted bearings under zero measuring load
- Standard internal clearance or preload
A Clearance 0 to 127 µm
K Preload 0 to 127 µm
L Preload 0 to 254 µm
Z Other inernal clearance or preload not specified above

Constant Section (CS) bearings manufactured from Chrome Steel maintain a uniform cross-sectional height regardless of bore diameter, making them exceptionally compact and space-efficient. Their GCr15/52100 alloy composition, hardened to HRC 60–66, provides superior load capacity and contact fatigue resistance that delivers reliable performance under high-speed, heavy-load, and demanding cyclic conditions. This combination of slim profile and mechanical strength makes them a go-to choice in robotics, medical, and semiconductor applications.

 

Constant Section (CS) bearings with angular contact geometry are designed to carry combined radial and single-direction axial loads along a defined contact angle — typically 15° or 30° — delivering higher axial rigidity and speed capability than a four-point contact configuration under unidirectional thrust. The load is transmitted through each ball at a single contact point on both the inner and outer rings, concentrating force along the contact angle line and making them inherently stiffer and more precise under predictable, unidirectional loading conditions. This makes them the preferred choice where high-speed operation and axial preload control are critical, such as in spindle assemblies, precision actuators, and servo-driven positioning systems.

 

Constant Section (CS) bearings with Chrome Steel balls utilize GCr15/52100 alloy spheres hardened to HRC 60–66, delivering the highest load capacity and contact fatigue resistance among standard ball materials within the same compact cross-sectional envelope. The high carbon-chromium composition provides exceptional surface hardness and elastic modulus, enabling the balls to sustain high Hertzian contact stress against the raceways under heavy radial, axial, and moment loads without premature deformation or spalling. This makes them the preferred choice in general industrial, robotic, and precision motion applications where maximum mechanical performance and cost efficiency are the primary requirements.

 

Why are Chrome Steel rings the most common choice for Constant Section (CS) bearings?

Constant Section (CS) bearings with Chrome Steel rings use GCr15/52100 alloy hardened to HRC 60–66, delivering the highest combination of load capacity, contact fatigue resistance, and dimensional stability among standard ring materials. This makes them the most cost-effective option for the broadest range of industrial and precision motion applications.

 

What load directions can Constant Section (CS) bearings with angular contact geometry handle?

Constant Section (CS) bearings with angular contact geometry are designed to carry combined radial and single-direction axial loads along a defined contact angle — typically 15° or 30° — delivering higher axial rigidity and speed capability than a four-point contact configuration under unidirectional thrust.

 

Why are Chrome Steel balls the most common choice for Constant Section (CS) bearings?

Constant Section (CS) bearings with Chrome Steel balls utilize GCr15/52100 alloy spheres hardened to HRC 60–66, delivering the highest combination of load capacity, contact fatigue resistance, and surface hardness among standard ball materials. This makes them the most cost-effective option for the broadest range of industrial and precision motion applications.

 

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