Overview
The Allen-Bradley 871T-R8K18 /B is an inductive proximity sensor engineered for reliable object and material detection in industrial automation environments. This quick disconnect variant provides simplified installation and maintenance in manufacturing, packaging, and process control applications. Note: The 871T series was discontinued by Rockwell Automation as of April 13, 2023; this unit represents surplus inventory.
Key Features
- Quick disconnect connector design for fast field replacement and installation
- Inductive proximity sensing technology for non-contact object detection
- Robust construction suitable for industrial automation and motion control
- DiscontinuÂed model (April 2023) — excellent for retrofit or replacement applications
- Available in new condition for reliable performance
Technical Specifications
Verify the following specifications with your system integrator, as exact electrical ratings and sensing distance depend on the complete model designation:
- Sensor Type: Inductive Proximity
- Connection Style: Quick Disconnect
- Product Series: 871T
- Condition: New (No Box)
- Manufacturer: Allen-Bradley (Rockwell Automation)
Typical Applications
The 871T-R8K18 /B is well-suited for:
- Position and motion sensing in automated machinery
- Parts detection on conveyor systems
- Proximity monitoring in production assembly lines
- Retrofit replacements for existing 871T installations
- Industrial control and safety applications requiring non-contact detection
Compatibility & Replacements
Compatible With
- Allen-Bradley CompactLogix and ControlLogix controllers
- Rockwell Automation industrial automation platforms
- Standard 24 VDC industrial control circuits (verify voltage for your specific model variant)
- Manufacturing execution systems and PLC-based process control
Replaces / Drop-In Replacement For
The 871T-R8K18 /B is a direct replacement for identical model numbers in your existing bill of materials. For interchangeability with other 871T variants (such as 871T-G8K18, 871T-L8K18), verify sensing distance, output type, and connector configuration with your system integrator before ordering.
Works With
- Allen-Bradley Studio 5000 Logix Designer programming environment
- RSLogix legacy platforms (for older installations)
- Standard PLC I/O modules and digital input cards
- 24 VDC control circuits and industrial power supplies
















