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In hydraulic transmission systems, construction machinery, steel equipment, and various high-pressure industrial sites, proximity switches are often the first components to fail. High-pressure impact, continuous high temperature, oil contamination, and strong vibration interference can cause ordinary proximity switches to drift, distort signals, or fail completely, resulting in equipment shutdown and high maintenance costs.
For the complex application environments of hydraulic systems, KJT introduces a professional high-pressure-resistant proximity switch. With a 0–600 bar pressure resistance rating and integrated structural design, it provides a reliable position detection solution for high-pressure operating conditions.
The internal environment of hydraulic equipment is far harsher than ordinary production lines:
High-pressure impact: ordinary proximity switch housings and seals cannot withstand instantaneous high pressure in hydraulic systems.
Oil penetration: long-term corrosion from hydraulic oil and cutting fluid can cause internal circuits to short-circuit or corrode.
High-temperature exposure: continuous operation generates heat, causing temperature drift and frequent false operation.
Strong vibration and shock: vibration from construction machinery and heavy equipment can directly loosen sensing components.
When these problems combine, traditional proximity switches often fail before the next maintenance cycle.
KJT high-pressure-resistant proximity switches use high-strength corrosion-resistant housing materials and special sealing processes. They are specially designed for the extreme environments of hydraulic systems and can operate stably under high pressure, high temperature, and harsh working conditions.
Core pressure resistance capabilities:
● 0–600 bar pressure resistance, covering most hydraulic system pressure ranges
● Stable operation in high-temperature environments, preventing accuracy drift under high-temperature conditions
● Excellent oil and corrosion resistance, with long-term resistance to aging and leakage in hydraulic oil environments
Unlike traditional solutions that require external amplifiers, KJT high-pressure-resistant proximity switches integrate the sensing section and output amplification section into one structure:
No additional amplifier required; control can be achieved directly through a relay.
Simpler installation, reducing complicated wiring and debugging.
Easier system integration, with fewer failure points.
Higher operational stability, thanks to a shorter and more reliable signal transmission path.
Multiple connection options are available:
● Fixed sealed cable connection: suitable for heavily oil-contaminated environments requiring high sealing performance
● Industrial plug connection: convenient for quick disassembly and equipment maintenance
Deep customization is supported:
● Custom housing diameter
● Custom thread size
● Custom mounting structure
● Custom special pressure resistance level
Designed to meet the needs of various non-standard industrial equipment applications.
KJT high-pressure-resistant proximity switches are designed for harsh high-pressure sites, combining pressure resistance, stability, customization capability, and cost-effective domestic replacement advantages.
KJT high-pressure-resistant proximity switches are widely used in:
Hydraulic transmission systems — position feedback for hydraulic valves and pump units
Hydraulic cylinder equipment — limit position detection for piston rod extension and retraction
Construction machinery — cylinder stroke monitoring for excavators, loaders, and other machines
Steel and metallurgical equipment — position detection in high-pressure environments for rolling mills and shearing machines
Heavy machinery — harsh environments in metallurgy, mining, and port machinery
Pressure control systems — position control near accumulators and pressure pipelines
Automated hydraulic equipment — precise positioning of hydraulic actuators in intelligent production lines
KJT has long focused on industrial automation sensors and intelligent sensing. Its products cover proximity switches, photoelectric sensors, laser distance sensors, radar and ToF sensors, industrial safety devices, and conveyor protection systems. KJT is committed to providing industrial customers with stable and reliable sensor products and industry-specific solutions.
