Optical Groove Sensors (U-Slot)
Engineered for high-frequency counting and ultra-precise positioning. Our pre-aligned U-shaped sensors eliminate the hassle of optical axis adjustment, providing stable performance in high-speed automated lines.
- Response up to 5kHz
- Pre-aligned Precision
- Repeatability < 0.01mm
Precision Through U-Shaped Architecture
The optical groove sensor features a unique integrated design where the light transmitter and receiver are facing each other within a single U-shaped housing. This creates a permanent, pre-aligned optical axis.
Zero-Alignment Setup
Because the optical axis is fixed during manufacturing, there is no need for time-consuming field alignment. Simply mount the sensor and it's ready for high-precision detection.
Ultra-High Speed Triggering
The short optical distance and integrated circuitry allow for an exceptionally fast response frequency (up to 5,000 pulses per second), making it ideal for gear tooth counting and tachometer applications.
Professional Product Series
High-performance optical solutions engineered for global industrial automation.
K-Type Slot Photo Sensor
L-Type Slot Photo Sensor
T-Type Slot Photo Sensor
Y-Type Slot Photo Sensor
K Wired Slot Photo Sensor
L Wired Slot Photo Sensor
T Wired Slot Photo Sensor
Y Wired Slot Photo Sensor
Why XSZ Groove Sensors Excel?
Our U-Slot optical switches are the result of decades of optical engineering, delivering the stability and speed required for the world's most demanding automated systems.
5kHz Frequency
Ultra-fast response time enables high-speed counting for gear teeth, tachometers, and fast-moving production lines without missing pulses.
Micron Precision
Achieve exceptional repeatability of < 0.01mm. Perfect for zero-point positioning in CNC machines, 3D printers, and robotic arms.
Plug & Play
Pre-aligned optical axis eliminates setup errors. Compact housing allows for seamless integration into tight spaces and complex machinery.
360° Visibility
Dual-indicator LED system ensures operation status is clearly visible from any angle, simplifying on-site debugging and maintenance.
Compare Series Specs
From micro-positioning to heavy-duty counting, find the precise optical switch parameters tailored for your automation requirements.
| Model Series | Slot Width | Min. Detectable Object | Response Frequency | Repeatability | Output Type | Protection |
|---|---|---|---|---|---|---|
| XSZ-SG05 (Compact) | 5mm | ø 0.8mm Opaque | 5,000 Hz | < 0.01mm | NPN/PNP NO+NC | IP65 |
| XSZ-SG05-H (High-Speed) | 5mm | ø 0.5mm Opaque | 10,000 Hz | < 0.005mm | NPN/PNP NO+NC | IP65 |
| XSZ-SG15 (Wide Slot) | 15mm | ø 1.2mm Opaque | 3,000 Hz | < 0.02mm | NPN/PNP NO+NC | IP65 |
| XSZ-SG30 (Large Slot) | 30mm | ø 2.0mm Opaque | 2,000 Hz | < 0.05mm | NPN/PNP NO+NC | IP64 |
Industry-Specific Applications
XSZ U-slot sensors are critical components in modern automation, providing high-speed and reliable non-contact detection across various industrial sectors.
High-Speed Counting
Optimized for sensing gear teeth or fan blades to measure rotational speed (RPM) or count production units with frequency up to 5kHz.
Label Gap Sensing
Commonly used in labeling machines to detect the gap between stickers on a transparent carrier film, ensuring precise sticker placement.
Positioning & Limit
Acts as a zero-point return or limit switch in 3D printers, CNC machinery, and robotic arms to prevent mechanical over-travel.
Liquid Level Detection
When installed on a transparent bypass pipe or glass tube, the sensor detects the presence of liquid to trigger pump or alarm logic.
U-Slot Manufacturing Excellence
Direct from our ISO-certified facility in the manufacturing hub. We integrate advanced SMT lines and 100% optical calibration to ensure the highest consistency for every groove sensor.
Custom Groove Solutions
From non-standard slot widths to specific electrical logic, we partner with OEM manufacturers to deliver pre-aligned sensing units optimized for your machinery.
Requirement Analysis
We analyze your high-speed counting or positioning requirements. This includes evaluating the minimum detectable object size and the necessary response frequency (up to 10kHz) for your specific application.
Mechanical & Logic Design
Our engineers provide 3D CAD models within 48 hours. We customize housing dimensions (U-slot depth/width), cable exits, and output types (NPN/PNP/Analog/Frequency) to ensure perfect integration into your control system.
Validation & Lab Testing
Working prototypes are tested under high-load conditions in our lab. We verify signal stability against ambient light interference and high-frequency noise before sending samples for your on-site field testing.
Batch Production & SMT
Upon validation, we initiate mass production using our automated SMT and precision assembly lines. Every groove sensor undergoes a final computerized calibration to guarantee 100% axial alignment.
What Our Global Partners Say
From high-speed tachometers to precision CNC positioning, XSZ groove sensors are the preferred choice for reliable, non-contact detection.
"The 5kHz response frequency of XSZ groove sensors is outstanding. We use them for high-speed motor RPM counting, and we've had zero signal loss even at maximum speeds. Truly stable and high-performance components."
"The pre-aligned U-slot design saved us massive amounts of time during assembly. No more fiddling with optical axis alignment like we had to with through-beam sensors. The repeatability is dead-on for our limit switch needs."
"XSZ provided a custom 25mm slot width solution that other suppliers couldn't offer. Sourcing directly from their factory not only cut our costs but also gave us direct access to their technical support team for our OEM project."
Groove Sensor FAQ
Clear answers to help you integrate our U-slot optical switches into your automated systems with confidence.
How do I determine the best slot width for my application?
The slot width should be at least 2-3mm wider than the maximum width of the object passing through. For high-speed rotating discs, a narrow slot (5mm) is preferred to maintain a tight optical beam and higher precision.
Can the sensor handle high-frequency counting without losing signals?
Yes. Our high-speed series (XSZ-SG05-H) supports frequencies up to 10,000 Hz. This ensures zero signal loss even in ultra-fast tachometer or gear-tooth counting applications.
Are the sensors compatible with both NPN and PNP controllers?
We offer dedicated NPN and PNP models, as well as universal dual-output versions. All models support both Normally Open (NO) and Normally Closed (NC) logic, switchable via wiring.
What protection measures are in place for harsh environments?
Our groove sensors feature over-molded electronics with IP65/IP67 ratings, providing excellent resistance against dust, vibration, and occasional moisture in factory settings.
Ready to Enhance Your Automation?
Get a customized quote for bulk orders or technical consultation for your OEM project.
