High-Quality M8 Waterproof Connectors
Understanding M8 Cable Connectors - Compact & Durable Design
M8 connectors are compact circular connectors known for their miniature size, typically featuring an 8mm thread diameter—smaller than M12 connectors. Despite their small form factor, M8 cable connectors provide reliable and secure connections, making them ideal for installations where space is limited. Holin Tech offers a wide range of M8 waterproof connectors, specifically designed for industrial automation, sensor systems, and harsh environments where compact, sealed connectivity is essential.
Key Features and Applications
- Compact Design: The compactness of M8 and M12 connector system makes them suitable for applications where space is limited, such as in sensors, actuators, and small-scale machinery.
- Diverse Configurations: Wide range of M8 circular connectors and M8 cables come in various configurations, including different numbers of pins (2 poels, 3 poles, 4 poles, 5 poles, 6 poles and 8 poles). difference of connector type, the full solution that includes connectors of panel mount, molded and installable. The cables' jacket can be PVC, PUR, halogen-free and others. This versatility allows for customization based on specific application requirements.
- IP Ratings: Selection of M8 series connectors and cable assembly solutions boast high Ingress Protection (IP) ratings IP65, IP66, IP67 and IP68, ensuring resistance to dust, water, and other environmental factors. This makes them ideal for use in harsh industrial conditions, it safely and reliably ensures reliable communication.
- Robustness: Constructed with durable materials, IP67 sealed and tested M8 connectors and cables are designed to withstand vibrations, temperature variations, and mechanical stress commonly encountered in industrial environments. It reduce downtime in harsh application with stable industrial standard solution.
- Versatile Applications: They find applications in a wide array of industries, including factory automation, automotive, robotics, profibus, profinet, fieldbus and industrial ethernet. the M8 system provides a full solution of reliable connectivity for small M8 sensors, actuators, and control systems.
Benefits of M8 Connectors and Cables
- Reliability: Their robust design and secure connections ensure reliable signal transmission critical for industrial applications and control systems.
- Space-Efficiency: The compact size of M8 connectors allows for installation in tight spaces, offering flexibility in design and implementation.
- Ease of Installation: M8 connectors are easy to install and maintain, reducing downtime and enhancing operational efficiency in industrial setups.
- Customization: With various pin configurations and cable lengths available, M8 connectors offer customization options to suit specific application needs.
Frequently Asked Questions: Difference from M8 and M12 (FAQ)
1. What is an M8 connector?
An M8 is a type of circular connector commonly used for small sensors and automation applications in industrial settings. It is designed to provide a secure connection for various devices and equipment.
2. How does M8 differ from M12?
The primary difference between M8 and M12 lies in their size and functionality. While both are circular connectors, M8 connectors are smaller in diameter compared to M12 connectors. The choice between the two depends on the specific application and the requirements of the system.
3. What are the typical uses of M12 connectors?
M12 connectors are commonly used for connecting devices in industrial automation and networking applications. They provide a secure and reliable connection for ethernet and signal transmission in harsh environments.
4. Can M8 connectors be used for outdoor applications?
Yes, certain M8 connectors are designed to meet IP67 ratings, making them suitable for outdoor use. When used with appropriate cable assemblies and shielding, M8 connectors can provide reliable connections in various environmental conditions.
5. What are the key differences in the construction of M8 and M12 connectors?
M8 connectors typically have a smaller diameter and fewer pins or poles compared to M12 connectors. Additionally, the thread sizes and mating mechanisms may differ between the two, impacting their usage and compatibility with specific devices.
6. What is the current rating of M8 cable?
1.5A for A code's 5, 6, 7 and 8 pins.
3A for A code's 2, 3 and 4 pins
7. What is the material of M8 connector and cables?
HOLIN's M8 connectors insert is using UL94 V0 PA66 + GF, the pin is Brass with Gold plated 6u", the housing are Brass with Nickel plated or plastic. We also be able to use Stainless Steel or Aluminum to custom that.
HOLIN's M8 cable can be PVC, PUR, Rubber, XLPE, LSZH, etc, we are able to custom your own cable assembly based on your product application.
8. Are M8 connectors universal?
Yes, it is. The M8 is under IEC 61076-2-104.
9. What code M8 has?
| Pin Geometry keyway | Connector codes | IEC No. | Existing Pins | Current Rated |
 |
M8 A code | 61076-2-104 | 2, 3, 4, 5, 6, 7 and 8 |
2, 3 and 4 pin = 3A 5, 6, 7 and 8 pin = 1.5A |
 |
M8 B code | 61076-2-104 | 5 | 3A |
 |
M8 K code | -------- | 2, 3, 4, 5 and 6 |
2, 3 and 4 pin = 3A 5 and 6 pin = 1.5A |
Applications of M5 connectors and cables
Robots Arm
IOT Devices
Portable Power Supply
Flow Meter
Equipments and Devices on Weather Station
Pumping Station of Control and Alarm System
Thermal Scanner
IP66 to 68 M8 A code 2 Pins Male Panel Mounting Connector A08D-M102HSR
IP66 to 68 M8 A code 3 Pins Male Panel Mounting Connector A08D-M103HSR
IP66 to 68 M8 A code 4 Pins Male Panel Mounting Connector A08D-M104HSR
IP66 to 68 M8 A code 5 Pins Male Panel Mounting Connector A08I-M105HSR
IP66 to 68 M8 A code 6 Pins Male Panel Mounting Connector A08I-M106HSR
IP66 to 68 M8 A code 7 Pins Male Panel Mounting Connector A08I-M107HSR
IP66 to 68 M8 A code 8 Pins Male Panel Mounting Connector A08I-M108HSR
IP66 to 68 M8 A code 2 Pins Male Panel Mounting Connector A08D-M102HPR
IP66 to 68 M8 A code 3 Pins Male Panel Mounting Connector A08D-M103HPR
IP66 to 68 M8 A code 4 Pins Male Panel Mounting Connector A08D-M104HPR
IP66 to 68 M8 A code 5 Pins Male Panel Mounting Connector A08I-M105HPR
IP66 to 68 M8 A code 6 Pins Male Panel Mounting Connector A08I-M106HPR
M8 Connector FAQ
Q1: What is an M8 connector and where is it mainly applied?
A: The M8 connector is a small circular connector compliant with the IEC 61076-2-104 standard, featuring an 8mm locking thread. It serves as the standard interface for modern industrial automation sensors (such as proximity switches, photoelectric sensors, and magnetic cylinder switches). Additionally, it is widely used in space-constrained I/O distribution boxes, small actuators, and robot end-of-arm tooling.
Q2: What are the advantages of M8 connectors compared to M12?
A: The M8 is approximately 30% smaller in volume than the M12. In distribution boxes with extremely high I/O port density or applications requiring installation on micro-robotic arms, the M8 offers superior space utilization. While reducing size, it retains industrial-grade waterproof, dustproof, and vibration-resistant performance, making it key to achieving lightweight and compact equipment designs.
Q3: How many pin configurations does the M8 connector have? What signals does it support?
A: Common M8 specifications include 3-pin and 4-pin (primarily for sensor signals and power), as well as 6-pin and 8-pin versions for higher-density signal transmission. It stably transmits analog signals, digital I/O signals, and industrial communication protocols (such as IO-Link), meeting diverse control requirements.
Q4: How is the waterproof performance of HOLIN's M8 connectors?
A: Our M8 connectors are designed for harsh environments with a standard protection rating of IP67. This means they completely block dust ingress and keep the interior dry even when briefly submerged in water. For CNC machines with coolant spray or outdoor monitoring equipment, we can also provide advanced custom solutions meeting IP68 standards.
Q5: Is there a difference between "Straight" and "Right Angle" M8 connectors?
A: Yes. To adapt to different installation spaces, M8 connectors come in Straight and Right Angle (90-degree) forms. The Right Angle design is particularly suitable for installations with limited back clearance, effectively reducing cable bending stress and extending cable life.
Why Choose HOLIN? (Our Advantages)
1. The Savior for Tight Spaces: Right Angle & Custom Shapes
In automation equipment, M8 connectors are often installed in the most restricted corners. HOLIN not only provides standard Straight and Right Angle versions but can also customize specific cable exit angles or ultra-short body designs based on your mechanical interference drawings. We are dedicated to solving your "impossible to fit" mechanical challenges, ensuring the connector integrates perfectly into your device design.
2. Professional Cable Material Advice: Oil & Flex Resistance
Sensor cables often move with robotic arms or are submerged in oil for long periods. HOLIN offers a variety of cable material choices, including economical PVC and PUR (Polyurethane) cables known for high abrasion resistance, oil resistance, and millions of flex cycles. We will recommend the most suitable material based on your operating environment (dynamic or static) to prevent premature cable jacket failure.
3. 100% Customized to Needs: Color, Length, Labeling
We break the limits of standard products. Need to distinguish connectors for different functions? We can customize different colored cores or jackets. Need easy on-site maintenance identification? We can print labels or add heat shrink tubing on the cable. Of course, cable length can be precisely customized to minimize on-site cable management headaches.
4. High-Reliability Shielding Technology
Sensor signals are typically weak and susceptible to interference. For precision measurement applications, HOLIN offers Fully Shielded M8 Connectors. We ensure 360-degree conductivity from the metal connector shell to the cable braid, effectively blocking electromagnetic noise (EMI) in factory environments and ensuring precise sensor data.
5. Flexible Tail Processing & Wire Harness Assembly
To make your assembly more efficient, HOLIN provides one-stop wire harness processing services. On the other end of the M8 connector, we can pre-strip, tin, crimp terminals, or mate with board-end connectors like JST or Molex for you. You receive a finished product ready for direct installation, significantly reducing your production time and labor costs.