SICK IM18-08NNS-ZWD Inductive Proximity Sensor – 8 mm Non-Flush Detection
The SICK IM18-08NNS-ZWD inductive proximity sensor is a reliable M18 industrial sensor engineered for precise, non-contact detection of metal targets. With an 8 mm non-flush sensing distance, this model addresses common challenges in automation systems where mechanical switches fail due to wear, vibration, or contamination. Its rugged metal housing, stable NPN normally open output, and wide DC operating voltage make it suitable for continuous operation in harsh factory environments. Designed for long-term reliability, the IM18-08NNS-ZWD supports accurate position sensing, object detection, and machine status monitoring across a wide range of industrial applications.
The SICK IM18-08NNS-ZWD is built to deliver consistent detection performance even under demanding operating conditions. Its non-flush mounting design allows greater sensing distance, simplifying installation when detecting moving metal parts or components with positional tolerance. A fast switching response supports high-speed processes, while integrated protection features help prevent damage from wiring faults or electrical disturbances. The robust, sealed construction resists dust, moisture, and oil exposure, reducing downtime and maintenance effort. In real-world production lines, this sensor improves process stability, enhances machine reliability, and supports uninterrupted operation in automated systems.
Why SICK IM18-08NNS-ZWD?
The SICK IM18-08NNS-ZWD is chosen when reliability, longevity, and installation flexibility are critical to your automation system. Its non-contact inductive sensing eliminates mechanical wear, while the non-flush 8 mm sensing range provides greater tolerance in real-world mounting conditions. Designed for continuous industrial operation, it delivers stable switching performance even in environments exposed to vibration, oil mist, dust, or temperature variation. This makes it an excellent long-term solution for engineers who prioritize reduced downtime, predictable performance, and consistent detection accuracy across demanding production cycles.
What problem does it solve?
The SICK IM18-08NNS-ZWD solves the problem of unreliable object detection in harsh industrial environments where mechanical switches or lower-grade sensors fail prematurely. It enables accurate detection of metal targets without physical contact, preventing wear-related failures and misalignment issues. Its fast response supports high-speed machinery, while the sealed housing protects internal electronics from contamination. In practice, it minimizes false signals, reduces maintenance intervention, and ensures stable machine feedback, helping manufacturers maintain productivity, quality control, and operational efficiency in automated processes.
Key Features & Specifications – SICK IM18-08NNS-ZWD: Part Number 6012049
| Feature | Details | Benefit |
|---|---|---|
| Housing Size | M18 cylindrical, Ø18 mm | Industry-standard form factor for easy replacement and integration |
| Sensing Range | 8 mm (non-flush installation) | Allows greater detection distance and flexible mounting |
| Installation Type | Non-flush (non-embeddable) | Improves sensing performance in metal-dense installations |
| Switching Output | NPN, Normally Open (NO) | Compatible with common PLC and control systems |
| Supply Voltage | 10–30 V DC | Supports stable operation across varied industrial power supplies |
| Switching Frequency | Up to 600 Hz | Suitable for high-speed detection in dynamic processes |
| Output Current | ≤ 400 mA | Reliable signal transmission to control devices |
| Connection Type | 3-wire cable, 10 m length | Reduces need for extensions and simplifies cabinet routing |
| Protection Rating | IP67 | Resists dust, moisture, and oil in harsh environments |
| Housing Material | Nickel-plated brass | High mechanical strength and corrosion resistance |
| Sensing Face Material | Plastic | Optimized for stable inductive sensing performance |
| Operating Temperature | –25 °C to +70 °C | Reliable performance across wide ambient conditions |
| Electrical Protection | Short-circuit and power-up pulse protected | Enhances system safety and reduces risk of damage |
| Repeatability | ≤ 2% | Ensures consistent detection accuracy over time |
| Safety Reliability | MTTFd up to 93 years | Supports long-term, maintenance-friendly machine operation |
Download SICK IM18-08NNS-ZWD (6012049) Datasheet
Commercial Information – SICK IM18-08NNS-ZWD
| Commercial Data | Details |
|---|---|
| Weight | 364 g |
| Country of Origin | Italy |
The Applications
1. Precise Position Detection in Conveyor Transfer Lines
In automated conveyor systems, accurate position feedback is required to coordinate transfers and prevent product collisions. The SICK IM18-08NNS-ZWD is widely applied to sense metal pallets or carrier plates as they move through transfer zones. Its non-flush 8 mm sensing range maintains reliable detection even when the sensor is mounted near steel frames. The high switching speed supports fast-moving conveyors, while the NPN output connects directly to standard PLC inputs. The sealed housing protects against dust and debris, ensuring stable detection during continuous material flow.
2. End-Stroke Sensing for Pneumatic and Hydraulic Cylinders
Manufacturing equipment frequently uses cylinders for repetitive linear motion, where accurate end-stroke confirmation is critical. The SICK IM18-08NNS-ZWD is used to detect metal pistons or position flags without physical contact, eliminating mechanical wear. Its high repeatability ensures consistent stroke detection over long operating cycles. The sensor remains stable under vibration and temperature variation, helping maintain precise machine timing. With integrated electrical protection and a rugged housing, it provides dependable feedback in demanding production environments.
3. Tool Presence Verification in Automated Workstations
Automated machining and assembly stations require confirmation that tools are correctly installed before operation begins. The SICK IM18-08NNS-ZWD can be positioned near tool holders or fixtures to detect metal components prior to cycle start. Its compact M18 design allows installation in tight spaces, while the non-flush configuration improves detection reliability near metal structures. Fast response times support short cycle durations, and the robust construction resists exposure to oil mist and industrial contaminants.
4. Position Feedback for Machine Guards and Access Panels
Industrial machines often rely on position feedback to confirm that guards or access panels are properly closed before operation. The SICK IM18-08NNS-ZWD detects metal targets attached to sliding or hinged guards without direct contact. This approach avoids wear-related failures common with mechanical switches. Stable sensing performance ensures reliable signals even when slight misalignment develops over time. The sealed construction and noise-resistant electronics support dependable operation in environments with vibration, dust, and frequent machine movement.
Related Products & Accessories
| Category | Model Name | Part Number | Benefits |
|---|---|---|---|
| Mounting Accessory | BEF-KH-M18 | 2051481 | Secure clamping on round structures; vibration-resistant plastic design simplifies installation |
| Mounting Accessory | BEF-WG-M18 | 5321870 | Rigid steel mounting plate ensures stable alignment on flat machine surfaces |
| Mounting Accessory | BEF-WN-M18 | 5308446 | Zinc-coated steel bracket allows flexible angled or offset mounting |
| Mounting Accessory | BEF-WN-M18N | 5320947 | Stainless steel bracket suitable for corrosive or washdown-prone environments |
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