KD045AR0
1/2" Constant Section Bearings
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Part No.
Part No.
KD045AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
0.88 lbs
Tolerance class
ABEC-1
ISO radial rating
3861 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
4.5"
Bore diameter tolerance
-0.0008" – 0"
Outside diameter
5.5"
Outside diameter tolerance
-0.0008" – 0"
Width
0.5"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
4.87"
Outer Ring Dimensions
Outer ring large-side face inner diameter
5.241"
Outer ring small-side face inner diameter
5.13"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1931 lbf
Radial static load rating
3950 lbf
Axial static load rating
4570 lbf
Static load moment
11400 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:
$ 127.57
/ each
In Stock
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KD045AR0 Bearing Product Overview & Core Advantages
The KD045AR0 is a high-precision, inch-series Angular Contact Ball Bearing from the Reali-Slim Open Bearings family, specifically engineered for applications demanding compact cross-sections and high load capacity. Its Single Row design with a 30° contact angle is optimized to support significant combined loads—simultaneously handling radial forces and high unidirectional axial thrust. Manufactured to ABEC-1 precision tolerances, this bearing offers reliable performance in high-rigidity systems where space and weight are critical constraints, making it an ideal solution for compact, high-performance machinery.
KD045AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KD045 | Bore Size Code (4.5 inches) |
| A | Angular Contact Design (30° contact angle) |
| R0 | Reali-Slim Series, Open (no seal) construction |
KD045AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row angular contact design with a 30° contact angle provides exceptional resistance to combined loads, offering a radial dynamic load rating of 1931 lbf and a high axial static load rating of 4570 lbf.
- Precision Engineering: Built to ABEC-1 tolerance standards with a controlled radial internal clearance (0.0000 – 0.0005") for smooth, precise operation and minimal runout.
- Durable Construction: Components made from Chrome Steel (rings and balls) and a Brass cage ensure high strength, wear resistance, and reliable performance under demanding conditions.
- Compact & Lightweight: As part of the Reali-Slim series, it features a thin cross-section (Width: 0.5") and low weight (0.88 lbs), enabling space-saving designs without sacrificing performance.
- Wide Operating Range: Suitable for a temperature range of -30°C to 110°C and comes pre-lubricated for immediate use in various environments.
KD045AR0 Bearing Typical Application Areas
This bearing is ideally suited for applications requiring high precision and a compact profile, including:
- Robotics and automation arms
- Aerospace control mechanisms and actuation systems
- Medical equipment such as surgical robots and imaging devices
- Machine tool rotary tables and indexing heads
- Optical positioning systems and precision instruments
