Allen-Bradley 871TM-B8C18-A2 Inductive Proximity Sensor 18mm DC 3-Wire 4-Pin Micro QD

Description:

The Allen‑Bradley 871TM‑B8C18‑A2 inductive proximity sensor is a non‑contact metal detection sensor used to sense the presence of metallic targets in automated systems. Installed in industrial control panels, machine frames, and automation equipment to provide reliable object detection without physical contact. Maintenance teams, system integrators, and automation technicians use this sensor for replacement, retrofit, and system upgrades to improve position feedback, part detection, and control accuracy.

Applications:

The Allen‑Bradley 871TM‑B8C18‑A2 sensor is used in manufacturing automation, conveyor systems, packaging machinery, assembly lines, robotic cells, and material handling equipment to detect metal components, confirm part presence, and trigger control actions. Allen‑Bradley inductive sensors provide dependable metal detection in environments where non‑contact sensing enhances process reliability, reduces mechanical wear, and supports accurate machine control logic.

Technical Specifications:

• Manufacturer: Rockwell Automation / Allen‑Bradley
• Model / Part Number: 871TM‑B8C18‑A2
• Product Type: Inductive Proximity Sensor
• Sensing Range: 8 mm typical
• Output Type: DC 3‑wire normally open (NO)
• Connection: 4‑pin micro quick‑disconnect (QD)
• Supply Voltage: 10–30 V DC
• Output Configuration: NPN/PNP—verify variant (commonly NPN NO)
• Housing Style: 18 mm threaded cylindrical body
• Protection Rating: IP67 (industrial dust/water resistance)
• Indicators: LED for power and output status
• Response Frequency: High switching frequency for rapid detection
• Mounting: Threaded body with lock nuts
• Operating Temperature: Industrial ambient range
• Application: Metal object detection, presence/position feedback

Common Replacements:

• Allen‑Bradley 871TM‑B8CP18‑A2 inductive sensor
• Pepperl+Fuchs NBB8‑18GM50‑E2 inductive proximity sensor
• Sick IM18‑02BPSZW1 inductive proximity sensor