+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Constant Section (CS) Bearings NA120AR0

Constant Section (CS) Bearings NA120AR0

The NA120AR0 is a slim angular contact ball bearing with a 12-inch bore and 12.5-inch outer diameter, featuring a compact 0.25-inch width. Made from chrome steel with a brass cage, it’s built to handle both radial and thrust loads efficiently.

Its 30° contact angle and ABEC-1 tolerance ensure smooth operation under dynamic radial loads up to 1128 lbf. The open design allows easy access for lubrication, while the chromium plating adds extra durability.

This bearing is interchangeable with KAYDON models, making it a versatile choice for replacements. Ideal for applications requiring precise motion control, such as robotics or medical equipment.

With a temperature range of -30°C to 110°C and compliance with RoHS standards, it’s a reliable option for various industrial uses. Weighing just 0.54 lbs, it’s lightweight yet sturdy for its size.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number NA120AR0
  • Brand TFL
  • Interchangeable KAYDON
  • System of Measurement Inch
  • Bearing Type Ball
  • For Load Direction Angular Contact
  • Construction Single Row
  • Seal Type Open
  • Bore Dia 12"
  • Bore Dia Tolerance -0.0014"– 0"
  • Outer Dia 12.5"
  • Outer Dia Tolerance -0.0014"– 0"
  • Width 0.25"
  • Width Tolerance +.000 –.005"
  • Thin Section Bearings Type Endura-kote Plated Bearings
  • Series NA 1/4" x 1/4"
  • Tolerance Class ABEC-1
  • Radial Clearance 0.0000 – 0.0005"
  • Contact Angle 30°
  • External Diameter On Inner Ring 12.186"
  • Internal Diameter On Outer Ring (Small Side Face) 12.314"
  • Internal Diameter On Outer Ring (Large Side Face) 12.349"
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Brass
  • Dynamic Radial Load 1128 lbf
  • Static Radial Load 4290 lbf
  • Static Thrust Load 2970 lbf
  • Static Moment 12390 lbf
  • Temperature Range -30°C to 110 °C
  • ISO Radial 1998 lbf
  • Surface Chromium Plating
  • Lubrication Lubricated
  • RoHS Compliant
  • Weight 0.54 lbs
  • price（$） 334.8
Constant Section (CS) Bearings NA120AR0 dimension drawing
Download DWG Download PDF

Features

Performance Features of NA120AR0 Bearing

NA120AR0 Bearing is designed with a 30° contact angle, optimising its performance in angular contact applications.
The chrome steel rings and balls provide strong resistance to both radial and thrust loads.

Its dynamic radial load capacity reaches 1128 lbf, ensuring reliable operation under stress.
The brass cage maintains ball alignment, reducing friction and wear.

NA120AR0 Bearing operates smoothly within a temperature range of -30°C to 110°C.
The chromium plating enhances durability, making it suitable for various industrial uses.

With ABEC-1 tolerance class, it offers consistent performance in precision applications.
The thin section design saves space while maintaining strength and reliability.

Application

Industrial Uses of NA120AR0 Bearing
NA120AR0 Bearing is commonly used in industrial robotics, where its thin-section design saves space without compromising load capacity. The 30° contact angle ensures smooth handling of combined radial and axial loads in articulated arms.
In aerospace applications, NA120AR0 Bearing’s chromium plating resists corrosion in harsh environments, making it suitable for satellite components. Its ABEC-1 tolerance provides reliable precision for critical flight systems.

Where Is NA120AR0 Bearing Used?
You’ll find NA120AR0 Bearing in medical imaging devices, where its brass cage reduces vibration for clearer scans. The chrome steel construction also withstands frequent sterilisation cycles in hospital settings.
For automation equipment, NA120AR0 Bearing’s lubricated design ensures quiet operation in conveyor systems. The inch sizing makes it easy to integrate with North American machinery standards.

Built for Heavy-Duty Use: NA120AR0 Bearing
NA120AR0 Bearing handles moment loads up to 12,390 lbf in packaging machinery, keeping production lines running smoothly. Its wide temperature range (-30°C to 110°C) suits both refrigerated and heated environments.
In semiconductor manufacturing, NA120AR0 Bearing’s precision alignment supports wafer handling robots. The open seal allows quick cleaning to maintain contamination-free zones.

Light-Duty vs Heavy-Duty: Best Uses for NA120AR0 Bearing
For light-duty applications like 3D printers, NA120AR0 Bearing’s 0.25″ width fits compact extruder assemblies. The dynamic radial load capacity (1,128 lbf) easily handles printhead movements.
In heavy-duty scenarios like construction cranes, NA120AR0 Bearing’s static moment rating (12,390 lbf) stabilises boom rotations. The chromium plating also protects against outdoor weathering.

Q&A

SEND INQUIRY