KF040AR0
3/4" Constant Section Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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KF040AR0 Bearing Product Overview & Core Advantages
The KF040AR0 is a thin-section angular contact ball bearing designed for applications requiring high precision and space optimization. As part of the Reali-Slim Open Bearings series with inch measurements, it excels in handling combined loads through its specific 30° contact angle, effectively managing both radial and axial forces. Its single-row construction and ABEC-1 precision make it ideal for compact assemblies demanding high rotational accuracy and reliability in moderate-speed operations.
KF040AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KF | Series designation for Reali-Slim thin section bearings |
| 040 | Bore diameter code for 4" |
| A | Angular contact design with 30° contact angle |
| R | Radial internal clearance designation |
| 0 | Open design (no seals or shields) |
KF040AR0 Bearing Structural Features & Performance Benefits
Thin-Section Design: With a consistent cross-section of 0.75" width, this bearing enables space-saving solutions without compromising load capacity, making it perfect for compact machinery designs.
High Load Capacity: The angular contact configuration provides excellent combined load handling, with a radial dynamic load rating of 3736 lbf and exceptional axial static load capacity of 8420 lbf.
Precision Performance: Manufactured to ABEC-1 tolerance class with tight dimensional controls (bore tolerance: -0.0008"–0"), ensuring reliable operation in precision applications.
Premium Materials: Constructed with chrome steel rings and balls combined with a brass cage for optimal strength, durability, and smooth operation across the temperature range of -30°C to 110°C.
KF040AR0 Bearing Typical Application Areas
- Robotics and automation systems requiring compact, high-precision rotary joints
- Aerospace and defense equipment where space and weight optimization are critical
- Medical imaging devices and surgical robotics demanding precise motion control
- Semiconductor manufacturing equipment requiring accurate positioning systems
- Industrial automation including rotary tables and indexing mechanisms
