MAB Robotics
IP66-rated Actuators
IP66 Ingress Protection
An IP66 protection rating indicates that robotic actuators are built to withstand harsh environmental conditions, offering robust resistance to both dust and water. The housing is meticulously sealed using high-quality materials like silicone and rubber, and the output shaft is sealed with advanced industrial-grade sealers. The housing of an IP66-rated actuator is manufactured from aluminum, while the output shaft's - from stainless steel or aluminum. The aluminum parts of the case are anodized to ensure better corrosion protection.
The IP rating is divided into two indices: the first number symbolizes protection against solid objects, and the second indicates the protection level against water. The first '6' in the rating means the actuator is completely dust-tight, ensuring no ingress of dust, which is critical for maintaining the integrity and reliability of the internal components. The second '6' represents water protection, indicating that the actuator can withstand powerful water jets from any direction. This involves a flow rate of 100 liters per minute, from a nozzle with a 12.5 mm diameter, at a pressure of 100 kPa from a distance of 3 meters for at least 3 minutes. This means the actuator can be exposed to high-pressure water cleaning or operate in heavy rain without any risk of being waterlogged.
IP66-rated actuators are often used in outdoor robotics to withstand changing weather conditions, as well as in industrial automation where they endure routing high-pressure water cleaning without risk of dust or water damage. The high level of protection provided by the IP66 rating means that these actuators require minimal maintenance, as they are safeguarded against dust and water ingress that could lead to excess wear and tear. This enhances the lifespan and reliability of the actuator, making it ideal for long-term use in robotics applications, even under extreme conditions.
Testing procedure
To ensure that an actuator meets the stringent IP66 protection ratings, we conducted a series of rigorous tests to confirm its resistance to dust and water.
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The process began with the dust protection test, a critical step in verifying that the actuator is entirely dust-tight. In this test, the actuator was placed inside a dust chamber. We tested a several actuators in tests which took from eight hours to seven days. Running actuators were exposed to dusty environment. The goal was to simulate extreme dusty conditions and ensure that no dust penetrates the actuator’s housing. After the exposure, actuators were carefully inspected to ensure that their internal components remained clean and free of dust. This thorough examination confirmed that MAB MA series IP66 actuators performance is unaffected by the dust, meeting the first '6' in the rating.
Step 1: Dust-resistance tests
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Step 2: Water-resistance tests
Next came the water protection test. For this, we used a nozzle with a diameter of 12.5 mm to direct high-pressure (100 kPa) water jets at the actuator from a distance of 2-3 meters, for 6 minutes. This test simulated an intense water exposure, such as heavy rain or high-pressure cleaning. After the water jets were applied, actuators were inspected for any signs of water inside their housing. The internal components were checked to ensure they remained dry and that the actuator continued to function correctly, confirming its ability to withstand the conditions described by the second '6' in the IP66 rating.
Why not IP67?
Those tests weren't enough for us. We decided to push the boundaries and test the limits of the technology. First, we assessed the actuators' performance under a higher water protection standard — IP67/IP68. To do so, we submerged the actuator 1.2 meters deep in water and kept it running for 45 minutes. The result? The actuator remained completely dry inside. Next, we conducted a more rigorous test by placing the actuators in a muddy conditions. We submerged the actuator 1.2 meters deep in a highly muddy water and ran it continuously for 5 days. During this period, we systematically removed the actuators to stir the mud, adjust the pressure and clean the actuators using a water jet. After this extensive testing, we inspected the actuators for any signs of water or mud inleakage. The internal components remained dry, and the actuators continued to operate correctly, validating their performance in the conditions specified by the IP67 rating. These tests simulated extreme all-weather exposure in some of the most demanding scenarios — such as heavy rain, temporary submersion in muddy terrain and high-pressure cleaning — as a way to demonstrate the actuators' excellent durability and reliability.
However, we decided to maintain the IP66 rating for our actuators. We are confident in their endurance, and even if a higher protection level is needed for your project, you might also consider using the MA series actuators.
Example applications
Outdoor robotics
IP66-rated actuators are ideal for outdoor robots due to their robust protection against environmental challenges. The IP66 rating ensures that these actuators are completely dust-proof, preventing any infiltration of dust or debris, which is crucial for maintaining good performance and longevity in dusty or sandy environments. Additionally, their ability to withstand powerful water jets means they can endure heavy rain, splashes, or even high-pressure cleaning without compromising their functionality. This makes them a perfect solution for outdoor robots that operate in varying weather conditions and rugged terrains.
Inspection missions
IP66-rated actuators are excellent for inspection robots owing to their robust protection, which allows them to operate in harsh environments. The IP66 rating guarantees that the actuators are completely dust-tight, preventing dust and debris from disrupting their operation. In addition, the rating indicates that the actuators can withstand powerful water jets, making them resistant to water exposure (cleaning process or temporary submersion). This is particularly important in environments such as construction sites, mines or water and sewerage systems where dust accumulation and humidity can pose a significant risk to the robot.
Agriculture
IP66-rated actuators are commonly used in agricultural applications due to their exceptional durability and protection from environmental factors. The rating guarantees reliable operation in all weather conditions and actuators' dust-resistance when used on dry soil. Moreover, they are capable of handling high humidity, mud, and temporary submersion without any issues. Their robust design minimizes maintenance needs and ensures reliability and consistent performance in harsh agricultural environments.
Industrial automation
IP66-rated actuators are highly suitable for industrial automation due to their exceptional durability and protection against environmental hazards. The IP66 rating provides dust- and water-resistant qualities, which are crucial for maintaining stable operation in environments where equipment is frequently cleaned, exposed to moisture or subjected to dust and particulate matter. This robustness minimizes maintenance requirements and enhances longevity, making these actuators ideal for continuous and reliable operation in demanding industrial applications.
