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.
Push Button Cap Retention Evidence: Define the Attachment Before a Pull Test
Push button cap retention evidence starts with the attachment design, not a pull-force number. Confirm whether the visible operator has a separate serviceable cap, a permanently assembled head or another construction. Then agree what attachment must remain secure, under which conditions, and how a test will apply and measure the relevant load. A product photograph or an operating-force measurement cannot answer those questions on its own. The PBS series push button switch offers different operator forms and options. The catalog presentation does not establish a removable cap or a universal pull-off requirement for every PBS model. This guide is an engineering and purchasing checklist for requesting evidence about the exact assembly, not an instruction to pull apart a supplied button. Identify which part is supposed to remain attached Use the exact model designation, approved drawing and a labeled assembly photograph to define the interface. A buyer may use cap to mean a colored surface, a lens, a complete operator or a replaceable accessory. Those descriptions can refer to different parts and different service boundaries. Resolve the terminology with the supplier before specifying a test or treating a detached item as an expected maintenance action. Ask which items may be removed in service and which require replacement as a complete assembly. Request the intended assembly method and relevant handling instructions without inferring a snap fit from appearance. If the product is not designed for cap removal, an exploratory pull test can be destructive. Keep that work on authorized evaluation specimens, and keep the tested specimens out of production until their disposition has been decided. Separate cap retention from operating force and panel mounting Operating force concerns the input needed to actuate...
↗Limit Switch Roller Debris Jamming: Inspect the Motion Path Before Restart
Limit switch roller debris jamming should be investigated with the machine safely isolated, the original obstruction documented and the complete roller movement path inspected. Removing visible material is only the first correction. A competent person must also assess damage, alignment, return movement and the machine's response before restart. Repeatedly forcing the roller or bypassing the switch can hide the fault while introducing further risk. For an LZ1 series limit switch, review the exact actuator variant and its instructions. A catalog enclosure rating does not establish that exposed moving parts cannot become obstructed. This guide concerns external debris around the roller and lever; it does not authorize opening the enclosure, prescribe a cleaning chemical or certify a safety function. Recognize an obstruction before changing the setting The first report may be a missing position signal, inconsistent timing or a lever that does not return. Record the symptom in the operator's words and retain the machine event history where available. Determine whether the target reached the expected location, whether the roller moved, and whether the controller received a change. These observations identify different parts of the sequence and should not be collapsed into one statement that the switch is broken. A photograph of material beside the roller is not sufficient to prove it caused the missed signal. Capture where it sits relative to the wheel, axle, lever, target and nearby structure. If the original condition has already been disturbed, record that limitation. Do not move the switch bracket simply to obtain a signal before preserving its position; doing so can make a debris problem appear to be an alignment problem. Isolate the equipment before approaching the roller A stationary mechanism can retain...
↗Micro Switch Silicone Vapor Contamination: Trace Sources Before Changing Contacts
Micro switch silicone vapor contamination calls for an investigation of nearby materials, exposure history and the actual contact failure before a replacement is approved. A silicone-containing sealant elsewhere in a machine is a lead, not proof of contamination inside the switch. Preserve failed parts, identify the exact assembly materials, and ask what analysis can connect a deposit to the observed electrical problem. Changing contact material or adding a cover without resolving that evidence can leave the original exposure route in place. This guide concerns source investigation around mechanical contacts. It does not establish a permissible silicone concentration, a service lifetime or silicone resistance for the KW7 series micro switch. Those decisions require information about the exact supplied construction and the intended equipment environment. Separate silicone vapor from visible grease and solder residue Start by identifying the question. A wet trace from a neighboring lubricant, residue around a solder termination, and suspected airborne siloxanes involve different routes and different evidence. They can coexist, but treating them as one material makes it harder to choose useful samples. Record what is actually visible and what is inferred from the process history. Do not describe an invisible deposit as a confirmed film simply because silicone appears on the materials list. The existing lubricant migration guide addresses movement of nearby lubricants. The flux residue analysis guide addresses assembly residues and laboratory identification. Use those questions separately when the evidence points toward a liquid path or soldering process. This article focuses on locating potential volatile sources and building a comparison that can test their involvement. Understand what published contact research establishes Sandia's study of silicone oil contamination in low-force gold contacts reports experiments using simulated MEMS...
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