KB075AR0
5/16" Constant Section Bearings
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Part No.
Part No.
KB075AR0
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
2409 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7.5"
Bore diameter tolerance
-0.0012"– 0"
Outside diameter
8.125"
Outside diameter tolerance
-0.0012"– 0"
Width
0.3125"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
7.731"
Outer Ring Dimensions
Outer ring large-side face inner diameter
7.955"
Outer ring small-side face inner diameter
7.893"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
1235 lbf
Radial static load rating
3700 lbf
Axial static load rating
3120 lbf
Static load moment
10670 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:
$ 203.47
/ each
In Stock
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KB075AR0 Bearing Product Overview & Core Advantages
The KB075AR0 is a high-precision, inch-series Angular Contact Ball Bearing from the Reali-Slim Open Bearings family. Engineered with a Single Row construction and a significant 30° contact angle, it is specifically designed to handle combined loads, efficiently supporting substantial radial loads and high unidirectional axial loads simultaneously. Its thin-section design offers a compact and lightweight solution, making it ideal for applications where space and weight savings are critical without compromising on performance or high rigidity. Manufactured to ABEC-1 precision tolerances, it ensures reliable operation in demanding industrial environments.
KB075AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KB075 | Indicates the bore size of 7.5 inches. |
| A | Signifies the 30° contact angle, optimized for high axial load capacity. |
| R | Denotes the Reali-Slim series, characterized by its thin cross-section. |
| 0 | Specifies an Open (unsealed) design, allowing for custom lubrication schemes. |
KB075AR0 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row angular contact design, combined with a 30° contact angle and a robust brass cage, provides exceptional rigidity. This enables the bearing to support high combined radial and axial loads, with a static axial load rating of 3120 lbf and a high static load moment of 10670 lbf.
- Precision Performance: Manufactured to ABEC-1 tolerance class with tight bore and OD tolerances, it ensures smooth, precise, and low-vibration operation, which is critical for accurate positioning systems.
- Thin-Section Advantage: With a cross-section of only 0.3125", this bearing offers a significant weight reduction (just 0.54 lbs) and space savings, enabling more compact machinery designs.
- Material & Lubrication: Components made from Chrome Steel provide excellent durability and wear resistance. The bearing is supplied lubricated and is suitable for a temperature range of -30°C to 110°C.
KB075AR0 Bearing Typical Application Areas
This bearing is ideally suited for applications requiring a compact, high-capacity solution in a large bore size. Key industries and equipment include:
- Robotics: Joint and arm actuators.
- Aerospace: Control surface mechanisms and actuator systems.
- Semiconductor Manufacturing: Precision stages and wafer handling robots.
- Medical Equipment: MRI and CT scanner gantries.
- Industrial Automation: Rotary tables, indexing heads, and precision gearboxes.
