Sick WF120-40B41CA71 Fork Sensor
The WF120-40B41CA71 is a Sick Fork Sensor featuring 120 mm fork width and 0.2 mm minimum detectable object capability. As part of the Sick portfolio and categorized under Sick Fork Sensor, this model belongs to the WFE series with 42 mm fork depth, push-pull PNP/NPN switching output, IP65 enclosure rating, 1-point and 2-point teach-in including dynamic mode, 20 mA consumption, 100 mA output current, M8 4-pin connector, aluminum housing, protected circuitry, optical detection principle, and 40 µs jitter.

| Brand | Sick |
| Product Type | Fork Sensor |
| Model Number | WF120-40B41CA71 |
Sick WF120-40B41CA71 Fork Sensor – Technical Specifications
| Specification | Value |
|---|---|
| Dimensions (W x H x D) | 10 mm x 150 mm x 57 mm |
| Fork width | 120 mm |
| Fork depth | 42 mm |
| Minimum detectable object (MDO) | 0.2 mm |
| Adjustment | Teach-in button, cable (Teach-in, sensitivity, light/dark switching, key lock, Teach-in dynamic) |
| Teach-in mode | 1-point teach-in2-point teach-inTeach-in dynamic |
| Current consumption | 20 mA 1) |
| Switching output | Push-pull: PNP/NPN |
| Switching output (voltage) | Push-pull: PNP/NPN High = UV - < 2 V/Low: ≤ 2 V |
| Switching mode | Light/dark switching |
| Output current Imax. | 100 mA |
| Connection type | Male connector M8, 4-pin |
| Circuit protection | UV connections, reverse polarity protectedOutput Q short-circuit protectedInterference pulse suppression |
| Enclosure rating | IP65 |
| Weight | Approx. 36 g ... 160 g 2) |
| Housing material | Aluminum |
| Functional principle | Optical detection principle |
| Jitter | 40 µs |
The WF120-40B41CA71 Sick Fork Sensor is used for precise object detection in industrial automation systems. This WF120-40B41CA71 Sick Fork Sensor provides 120 mm fork width, 0.2 mm minimum detectable object, push-pull PNP/NPN output, and IP65 enclosure rating for consistent operation. It belongs to the WFE series and operates using an optical detection principle with teach-in and dynamic adjustment options. The model is integrated in automation processes requiring repeatable and stable sensing performance.
In conveyor lines, packaging machines, labeling stations, and assembly equipment, the WF120-40B41CA71 ensures stable detection of thin materials and small components. The defined fork geometry supports accurate positioning, while 40 µs jitter enables responsive switching. With M8 4-pin connectivity and protected output circuitry, the sensor integrates reliably into PLC-based control systems used in manufacturing environments.
The WF120-40B41CA71 within the Sick fork sensor range maintains consistent detection accuracy under industrial conditions. Its aluminum housing, reverse polarity protection, and interference pulse suppression support long-term usage. Sick maintains uniform engineering standards across the WFE series for dependable automation integration. For industrial buyers requiring defined fork dimensions and stable push-pull switching logic, the WF120-40B41CA71 Sick Fork Sensor supports reliable machine operation in production facilities.




