Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
100% Manufactory
Set up since 2012, our company own the factory, and experienced.
PROFESSIONAL MANUFACTURER OF MICRO SWITCHES
Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
Product Quality
Uiled have obtained relevant CCC, CQC, UL, VDE, CE, ENEC enterprise and relevant product certifications.
Sales Market
We have gained a global sales network reaching many countries over North America, South America, Europe, Africa and South East Asia.
After-Sales Service
A complete service network has been established to respond to user requests within 24 hours.
PRODUCTS
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
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ABOUT LEMA
Lema is committed to R&D, production and sales of industrial control electrical switches. The company's core products include micro switches and travel limit Switches, push button switches, foot switches, toggle switches, AC power socket.
After nearly 30 years of steady development, Lema has become a large-scale professional manufacturer of micro switches in China. The company currently covers an area of more than 11,000 square meters.
2000Years
Established in
40+
Exporting countries and regions
10000m2
Factory floor area
60+
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APPLICATION
Committed to research and development, production, sales of industrial electrical switches and connectors
INDUSTRIAL
AUTOMATION
Industrial automation empowers smart manufacturing with reduced manual labor, higher precision, and greater efficiency.
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Heavy-Duty Limit Switch Selection: A Field Checklist for Industrial OEMs
Product-based illustration generated from the LZ1 product photograph. The mounting scene is illustrative; confirm the exact model, actuator and installation conditions against its drawing. A heavy-duty limit switch should be selected by the loads and environment it must survive—not by the adjective on a catalog page. Start with the machine motion and the required switching point, then match an actuator, mounting position, enclosure protection, contact duty and service plan to that application. Ask for model-specific ratings and test evidence; “heavy duty” is not a universal certification or a substitute for an equipment risk assessment. LEMA’s LZ1 Series page, for example, lists an aluminum-alloy limit switch with an IP66 enclosure rating and separate AC-15 and DC-13 contact ratings. Those claims apply to the stated series information and must still be checked against the exact order code and machine design. Define what “heavy duty” must withstand Write down the stresses before comparing part numbers. A press, conveyor, hydraulic cylinder, outdoor mechanism and washdown machine can all be described as demanding, but they do not impose the same stresses. One may need a robust actuator and repeatable switching position; another may need a sealed enclosure, a corrosion-resistant mounting arrangement or a long cable-flex life. Treat each requirement separately instead of assuming that one rating covers every condition. Build a short use profile: expected operating cycles, target approach speed, likely impact or side load, vibration, dust, liquid, cleaning chemistry, ambient temperature, cable movement and access for maintenance. Identify the consequence of a missed or false transition. If the switch is part of a safety-related control function, specify the required safety architecture and validated components separately; a general-purpose limit switch by itself does not establish...
↗Woodworking Foot Switch Selection for Equipment OEMs
Generated from the original LF-series dual-pedal product image. It is an illustrative product example, not a machine-specific safety approval. A woodworking foot switch lets an operator control equipment without moving a hand from the work area, but that convenience does not make the pedal a safeguard. Machine builders should first decide whether the pedal is a momentary command, a maintained on/off control or part of a multi-step sequence. Then match the contact duty, mounting, cable, floor conditions and dust exposure to the machine. A pedal that looks sturdy may still have the wrong electrical rating, return action or guard geometry. For a woodworking foot switch, validate the pedal and its controller as part of the machine design, and keep blade guarding, stop functions and lockout procedures separate. Define what the pedal is supposed to do Start with the machine sequence, not the switch catalogue. A foot pedal might request a temporary run command, enable a cycle while it is held, move a powered table, or select one of several machine functions. These actions require different control behavior. A momentary foot switch returns to its rest state when released. A maintained switch changes state and remains there until it is pressed again. A dual-pedal assembly may command two directions, separate actions or a sequence managed by the machine controller. Write down what should happen on press, release, power loss, cable failure and restoration of power. If releasing the pedal must stop motion, the controller and power switching path must be designed and validated to produce that behavior. Do not infer a “dead-man” or safety function from the pedal’s shape, color or return spring. RequirementTypical design questionWhat to verify Momentary run requestMust...
↗Hydraulic Cylinder Limit Switches: Position Feedback and Control
Hydraulic Cylinder Limit Switches: Position Feedback and Control Generated from the original WL-D11 product photo. The scene is illustrative and does not verify a hydraulic installation or safety function. A hydraulic limit switch can report that a cylinder, slide or attached mechanism has reached a defined position. It does not measure hydraulic pressure, hold the load or make a machine safe by itself. In a typical external arrangement, a cam, target or moving fixture actuates a mechanically mounted switch; its contacts then provide a signal to a properly designed control circuit. Selection starts with the motion and target geometry, then checks actuator travel, mounting tolerance, electrical load, environment and the controller’s response. Use the hydraulic equipment manufacturer’s instructions and the machine risk assessment to define where a limit switch belongs. Separate position sensing from hydraulic pressure sensing A mechanical limit switch responds to physical movement. It changes contact state when a lever, plunger or other actuator is moved past its operating point. A pressure switch or pressure transducer responds to fluid pressure. The two devices answer different questions: “Where is the moving part?” versus “What pressure is present?” A cylinder can reach a mechanical stop without producing a specific pressure, and pressure can rise while the cylinder is still moving or blocked by an external load. Use an external limit switch when the control sequence needs a discrete indication of extension, retraction or another defined position. Use a pressure-sensing device when the logic depends on pressure level. Some machines need both signals. A switch mounted near a cylinder must not be mistaken for a sensor that is in contact with hydraulic fluid or rated for line pressure. Define the machine...
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