KA120AR0
1/4" Constant Section Bearings
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Part No.
Part No.
KA120AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.54 lbs
Tolerance class
ABEC-1
ISO radial rating
1998 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12"
Bore diameter tolerance
-0.0014"– 0"
Outside diameter
12.5"
Outside diameter tolerance
-0.0014"– 0"
Width
0.25"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
12.186"
Outer Ring Dimensions
Outer ring large-side face inner diameter
12.349"
Outer ring small-side face inner diameter
12.314"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1128 lbf
Radial static load rating
4290 lbf
Axial static load rating
2970 lbf
Static load moment
12390 lbf
Lubrication
Lubricated
Radial internal clearance
0.0000 – 0.0005"
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 262.48
/ each
In Stock
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KA120AR0 Bearing Product Overview & Core Advantages
The KA120AR0 is a high-precision thin section angular contact ball bearing designed for applications demanding exceptional rigidity and precise motion control. Engineered with a single row construction and a 30° contact angle, it is optimized to support combined loads, handling significant thrust loads in one direction alongside radial loads. Its ultra-slim cross-section (0.25" width) enables compact and lightweight designs without compromising performance. Manufactured to ABEC-1 tolerance standards, this bearing ensures reliable operation in high-precision systems.
KA120AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KA120 | Base model number indicating the specific thin-section bearing series and size. |
| A | Signifies the contact angle of 30°, optimized for handling combined loads. |
| R0 | Indicates a specific radial internal clearance group (0.0000 – 0.0005"). |
KA120AR0 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 30° contact angle provides high axial and radial stiffness, enabling the bearing to support substantial combined loads (Radial Dynamic: 1128 lbf, Axial Static: 2970 lbf).
- Precision Engineering: Manufactured from Chrome Steel for rings and balls with a Brass cage, the bearing ensures dimensional stability and smooth operation. Compliance with ABEC-1 precision standards guarantees consistent performance.
- Optimized for Compact Designs: As a Reali-Slim bearing with a minimal 0.25" width, it significantly saves space and reduces weight (0.54 lbs), making it ideal for applications with strict size constraints.
- Specified Internal Clearance: The controlled radial internal clearance ensures precise fit and optimal performance in the assembled application, minimizing noise and vibration.
KA120AR0 Bearing Typical Application Areas
- Robotics and Automation: Rotary joints, robotic arms, and precision positioning stages.
- Aerospace and Defense: Guidance systems, gimbal mechanisms, and radar platforms.
- Medical Equipment: Surgical robots, imaging scanners, and diagnostic instruments.
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
