KB045AR0
5/16" 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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KB045AR0 Bearing Product Overview & Core Advantages
The KB045AR0 is a thin-section angular contact ball bearing engineered for applications demanding high precision and space optimization. As a Reali-Slim Open Bearing with a 30° contact angle, it is specifically designed to handle significant combined loads, supporting both radial and axial forces simultaneously. Its single-row construction provides a compact, lightweight solution without compromising performance, making it ideal for high-rigidity, weight-sensitive assemblies. Manufactured to ABEC-1 precision standards, this bearing ensures reliable operation in demanding environments.
KB045AR0 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| KB | Kaydon® Reali-Slim bearing series designation |
| 045 | Bore diameter: 4.5 inches |
| A | Angular contact design with 30° contact angle |
| R | Radial internal clearance specification |
| 0 | Open construction (no seals) |
KB045AR0 Bearing Structural Features & Performance Benefits
Thin-Section Design: With a cross-section of only 0.3125", this bearing enables compact bearing arrangements while maintaining high load capacity, perfect for space-constrained applications.
High Load Capacity: The 30° contact angle and optimized raceway geometry provide excellent combined load capability, with a radial dynamic load rating of 917 lbf and axial static load rating of 2240 lbf.
Precision Performance: Manufactured to ABEC-1 tolerance class with tight dimensional control (bore/OD tolerance: -0.0008" to 0"), ensuring smooth operation and accurate positioning.
Premium Materials: Constructed with chrome steel rings, chrome steel balls, and brass cage for durability, corrosion resistance, and stable operation across the temperature range of -30°C to 110°C.
KB045AR0 Bearing Typical Application Areas
Robotics & Automation: Robot joints, rotary actuators, and precision positioning systems requiring high rigidity and compact design.
Aerospace & Defense: Radar systems, gimbal mechanisms, and satellite positioning equipment where weight savings and reliability are critical.
Medical Equipment: CT scanners, MRI machines, and surgical robotics demanding precision bearings with smooth motion control.
Industrial Machinery: Rotary tables, indexing heads, and precision spindles in manufacturing equipment requiring accurate angular positioning.
