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+
Authentication certificate
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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Customer recognition is our greatest motivation.
NEWS
Stay updated with the latest developments, product launches, and industry insights.
Limit Switch Mounting Witness Marks: Read Alignment Without Assuming Clamp Load
Limit switch mounting witness marks provide a visual reference for later inspection, but their alignment does not measure bolt tension, prove the original tightening operation or verify switching performance. Treat a changed mark as a reason to investigate under an approved procedure, and an unchanged mark as only one observation. A useful record identifies which parts the mark spans, when it was applied and what installation condition was accepted at that time. Without that baseline, a neat stripe can be easy to see while providing little dependable information about the switch's installed condition. Decide what the mark is intended to reveal A limit-switch assembly contains several relationships that can change independently: the switch body relative to its bracket, the bracket relative to the machine, and an adjustable actuator relative to the switching head. A stripe spanning one relationship does not monitor all the others. Identify the actual joint and the movement that matters before deciding where an inspection reference belongs. For the LZ1 series limit switch, obtain the drawing and instructions for the exact actuator, mounting arrangement and hardware. The product photograph is useful for identifying visible construction, but does not establish a permitted marking surface, chemical compatibility or tightening procedure. Those questions need applicable documentation and approval for the installed machine. The mounting position and repeatability guide covers the functional relationship between switch and target. Witness marking is a supporting inspection method within that arrangement. It should not become the sole acceptance criterion for an installation whose actual purpose is to operate and release at the required machine positions. Establish the installation baseline first Make the equipment safe before inspection or work near moving parts. Follow the approved energy-isolation...
↗Toggle Switch Mounting Thread Galling: Investigate Binding Without More Force
Toggle switch mounting thread galling should be considered when a mounting nut binds and the mating thread surfaces show evidence of adhesive damage. Binding alone does not prove galling: an incorrect thread, contamination, a damaged starting thread or an unsuitable panel arrangement can also prevent assembly. Stop adding force, preserve the switch and nut together, and check their identities against the approved drawing. For a buyer or assembly supervisor, the priority is to establish why the joint stopped moving before accepting a replacement nut, a different lubricant or a higher tightening setting as the solution. Distinguish mounting resistance from actuator effort The mounting thread secures the switch to the panel; the lever operates the electrical mechanism. Resistance at one does not measure the condition of the other. Describe the complaint specifically: a nut stopped partway down the bushing, the body turned during installation, or the lever became difficult to operate after mounting. Record when the change appeared and which part was being held or turned. The LT3230C toggle switch provides a real component reference for this discussion. Its visible threaded mounting arrangement does not establish the metallurgy, surface treatment or approved assembly compound of every delivered variant. Confirm those attributes through applicable supplier documentation. Do not identify a shiny bushing as stainless steel, or assume that the mounting nut has the same material because the colors appear similar. Use the toggle switch panel mounting guide for the wider panel arrangement. This article addresses a narrower problem: investigating binding and possible adhesive thread damage. Correct hole size and a suitable panel stack remain necessary, but neither proves that a damaged mating pair is fit for reuse. Understand what galling means without...
↗Micro Switch Terminal Fretting Corrosion: Preserve Evidence Before Replacement
Micro switch terminal fretting corrosion is a possible cause of intermittent resistance at a separable terminal connection, but an intermittent signal alone does not establish that diagnosis. Preserve the switch, its mating terminal and their installed relationship before cleaning or repeated disconnection changes the evidence. Then distinguish the external connection from the switch's internal contacts, actuator movement and downstream circuit. For buyers evaluating a replacement, the useful question is which interface failed and what evidence supports the corrective action. A new switch that fits the same hole may leave an unsuitable mating receptacle or moving cable unchanged. Identify the interface before naming the failure A micro switch can have several electrically important interfaces. The movable contacts inside the housing are one. A quick-connect receptacle engaging an external blade is another. The conductor crimp behind that receptacle is a third. A measurement spanning all three cannot, by itself, identify which interface contributed an abnormal reading. Draw the actual circuit segment and mark where each test connection was placed before comparing results from different technicians. For the KW7 series micro switch, confirm the exact terminal and actuator variant in the order documentation. A photograph of a blade does not establish its finish, the mating receptacle's alloy or the contact force developed by an installed pair. These details need applicable supplier information. Start with the micro switch terminal types guide when deciding whether the connection is separable at all; a solder joint requires a different investigation from a push-on connection. The term fretting describes small relative movement at contacting surfaces. At an electrical interface, associated wear and surface reaction products can contribute to resistance instability. The University of Leeds research record on electrical...
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