ME-8104 Roller Arm Limit Switch 10 Pack – CNC Laser 5A 250V

ME-8104 Momentary Roller Arm Micro Limit Switch – 10-Piece Pack

Get precision position sensing for your CNC mill, laser cutter, or automation project with this 10-pack of ME-8104 momentary roller arm limit switches. Each switch features a rotary lever arm with roller actuator that delivers crisp, reliable triggering — ideal for end-stop, homing, and safety cut-off applications in workshops and maker spaces alike.

Key Specifications

• Model: ME-8104
• Type: Momentary Micro Switch — Rotary Lever Arm with Roller
• Rated Power: AC 250V / 5A  |  DC 115V / 0.4A
• Fixing Thread Diameter: 4 mm / 0.15"
• Roller Dimension: ~1.8 × 0.7 cm / 0.7" × 0.3" (Diameter × Height)
• Lever Arm Length: 4.6 cm / 1.8"
• Overall Size: 12.3 × 2.8 × 3.9 cm / 4.8" × 1.1" × 1.5" (L × W × H)
• Color: Black & Blue
• Material: Plastic, Metal & Rubber
• Certification: CCC
• Warranty: 2 Years
• Pack Quantity: 10 pieces

Why Choose the ME-8104?

• Reliable Actuation: The roller-tipped lever arm smoothly engages moving machine parts, ensuring consistent switching without mechanical shock.
• Wide Voltage Range: Supports AC 250V/5A and DC 115V/0.4A, making it versatile across different CNC, laser, and industrial control circuits.
• Durable Construction: Built from a combination of plastic, metal, and rubber for long-term performance in demanding shop environments.
• Wholesale Value: Ten switches per pack mean you always have a spare on hand for multi-axis machines or ongoing projects.
• Easy Mounting: Standard 4 mm fixing thread diameter fits common machine frames and enclosures with minimal modification.

Typical Applications

• CNC router and milling machine end-stops & homing switches
• Laser cutter and engraver position sensing
• 3D printer axis limit detection
• Conveyor belt and automated production line position control
• DIY robotics and electromechanical projects

Made in Mainland China.

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Frequently Asked Questions

Q: What is the ME-8104 limit switch used for in CNC and laser machines?

A: The ME-8104 roller arm micro limit switch is commonly used as an end-stop or homing switch on CNC routers, milling machines, laser cutters, and 3D printers. When a moving axis reaches its travel limit, the roller arm is actuated, triggering the switch and signaling the controller to stop or reverse movement — helping protect both the machine and the workpiece.

Q: What is the difference between momentary and latching switches, and which is the ME-8104?

A: A momentary switch (like the ME-8104) only remains actuated while physical pressure is applied to its lever arm — as soon as the contact is released, the switch returns to its default state. A latching switch stays in its toggled state until manually reset. For position sensing and homing in CNC and automation applications, momentary micro switches are the standard choice.

Q: Are these switches compatible with both AC and DC circuits?

A: Yes. The ME-8104 is rated for AC 250V at 5A and DC 115V at 0.4A, making it suitable for a wide range of machine control boards, relay circuits, and automation controllers that operate on either AC or DC supplies.

Q: How many switches are included and what is the warranty?

A: Each pack contains 10 ME-8104 limit switches. All switches carry a 2-year warranty, ensuring long-term reliability for your machines and projects.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.