KF055AR0
3/4" Constant Section Bearings
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Part No.
Part No.
KF055AR0
Basic Information
Bearing type
Ball
System of measurement
Inch
Thin section bearings type
Reali-Slim Open
Construction
Single Row
Weight
2.59 lbs
Tolerance class
ABEC-1
ISO radial rating
7566 lbf
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
5.5"
Bore diameter tolerance
-0.0010"– 0"
Outside diameter
7"
Outside diameter tolerance
-0.0010"– 0"
Width
0.75"
Width tolerance
+.000 –.005"
Contact angle
30 °
Inner Ring Dimensions
Shoulder diameter inner ring
6.055"
Outer Ring Dimensions
Outer ring large-side face inner diameter
6.613"
Outer ring small-side face inner diameter
6.445"
Performance
Temperature range
-30°C to 110 °C
Radial dynamic load rating
4319 lbf
Radial static load rating
8310 lbf
Axial static load rating
10060 lbf
Static load moment
23980 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:
$ 152.3
/ each
In Stock
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KF055AR0 Bearing Product Overview & Core Advantages
The KF055AR0 is a high-performance thin section angular contact ball bearing designed for applications demanding exceptional precision and space optimization. Engineered as a single row bearing with a 30° contact angle, it excels at handling combined radial and axial loads simultaneously. Manufactured to ABEC-1 precision tolerances, this bearing is ideal for high-accuracy machinery where compact design and reliable performance are critical. Its open construction allows for custom lubrication schemes to meet specific operational requirements.
KF055AR0 Bearing Model Code Explained, Specifications & Naming Convention
The model number KF055AR0 provides key technical specifications:
- KF: Indicates the manufacturer's series for thin section bearings.
- 055: Specifies the bore diameter of 5.5 inches.
- A: Denotes the angular contact design with a 30° contact angle.
- R0: Signifies the radial internal clearance group (0.0000 – 0.0005").
KF055AR0 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single row angular contact design, combined with a 30° contact angle and brass cage, provides excellent stability and can support significant combined loads, including high axial thrust.
- Precision Performance: Built to ABEC-1 tolerance standards with tight dimensional control on bore, outside diameter, and width, ensuring smooth operation and accurate positioning in precision assemblies.
- Optimized for Thin-Section Applications: With a cross-section of only 0.75", this bearing is a cornerstone of compact, lightweight designs without sacrificing load rating or performance.
- Superior Material Construction: Components made from chrome steel (rings and balls) and a brass cage offer high durability, wear resistance, and reliable operation within a temperature range of -30°C to 110°C.
KF055AR0 Bearing Typical Application Areas
This bearing is ideally suited for:
- Robotics and Automation systems (e.g., robotic arm joints, rotary actuators)
- Aerospace and Defense equipment (e.g., gimbal systems, radar platforms)
- Medical Equipment (e.g., CT scanners, precision surgical tools)
- Semiconductor Manufacturing machinery (e.g., wafer handling robots, precision stages)
- High-performance Industrial Machinery requiring compact, high-capacity rotary support
