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4pcs me-8108 adjustable roller lever arm arduino momentary limit switch nc no cnc mill router for diy projects logo

4Pcs ME-8108 Adjustable Roller Lever Arm Arduino Momentary Limit Switch NC NO CNC Mill Router For DIY Projects Review

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Poor

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Revainrating 2 out of 5  
Rating 
2.0
🔌 Electrical Controls & Indicators, 💡 Industrial Electrical

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Details

Operation ModeON-OFF
Current Rating5 Amps
Operating Voltage250 Volts
Contact TypeNormally Open, Normally Closed
Connector Type卷边
BrandTWTADE
See 5 more

Description of 4Pcs ME-8108 Adjustable Roller Lever Arm Arduino Momentary Limit Switch NC NO CNC Mill Router For DIY Projects

Product name : mini limit switch; model no. : ME-8108; actuator action : Momentary. Actuator Type : rotary adjustable lever arm with roller; contact configuration : NC + NO (dpdt); rated Voltage : AC 250V 5A, dc 115V 0.4A. Roller dimension : 18 x 7Mm/0.71" x 0.2"(D*t); lever arm length : 9.2Cm/3.6"; fixing thread diameter : 4.5Mm/0.18. Total size : 129 x 28x 50Mm/5.1"X 1.1 inch x 2 inch (l*w*h); mounting size : 56 x 21Mm/2.2" x 0.8 inch (l*w); material : rubber, plastic & metal. Excellent quality, preferential price, bring you the best shopping experience. Package Content : 4 x Limit Switch

Reviews

Global ratings 2
  • 5
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  • 4
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  • 3
    1
  • 2
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  • 1
    1

Type of review

Revainrating 1 out of 5

Worst product design I have ever seen.

These switches are rated at 5 amps 250V AC, 0.5A at 115V AC. They are intended for harsh environment(CNC). Out of the package, resistance across the normally closed contacts was a full 15 Ohms. The normally open contact set was variable, fluctuating from 25 to 250 Ohms when activated. The lever arm was bent, the lever arm mounting block was cracked. 2 cover screw threaded holes were already stripped out. The lever arm is made of inferior metal and bends easily. The roller wheel mounting is a…

Pros
  • Exactly what I needed
Cons
  • The roller lever arm is not very adjustable, making it difficult to use for some DIY projects

Revainrating 3 out of 5

Actuator head only has one orientation without modifications

Good product the only problem is the actuator head is held in place with two 2.5 x 20 mm screws. But only 2 of the 4 holes are tapped in the base. Therefore the actuator head cannot be rotated into the 3 other orientations unless you tap the holes in the base.The main advantage of this type of limit is it’s flexibility and by drilling but not tapping 2 more holes seems cheep manufacturing to me.

Pros
  • Easy and flexible adjustment
Cons
  • The product is not very durable and can wear out quickly, leading to frequent replacements