6 Best CNC Limit Switch Kit

Disclaimer: All claims are strictly my personal opinion. As an Amazon Associate, I may earn from qualifying purchases.

The CNC machines use limit switches to eliminate machinery vibrations, false triggers, and electrical interference between the cutting tool and workpiece.

The machine vibrations can affect the processing such as drilling, milling, and turning. The purpose of the limit switch is to stop the machine when it tries to move beyond its travel range.

Limit switches are electromechanical devices that interpret the computer about the limit of the CNC machine. The switch is activated when one axis meets the axis limit and the machine turns off/stops.

The importance of the CNC limit switch is equally likely for all CNC machines including milling machines, engraving machines, waterjet cutter, metal stamping machine, lathe, router, or more.

There are four types of limit switches – Whisker, Rollerlever, and plunger. Let’s have a look at the top 6 CNC limit switches available in the market to be at your doorstep.


QUICK PICKS

Here are my recommended products picked out through amazon you would be interested in depending on your budget…

BEST PICK
5 Pcs ME-8104 Rotary Metal Roller Arm Limit Switch for CNC...
5 Pcs ME-8104 Rotary Metal Roller Arm Limit Switch for CNC...
Ideal electrical control switches in Mechanical and other industries.; Lever Arm can be rotated to the left by 90° and to the right by 90°.
Best Value
TEMCo Plunger Limit Switch Tools - NC-NO CNC Mill Plasma...
TEMCo Plunger Limit Switch Tools - NC-NO CNC Mill Plasma...
RIGID ALUMINUM FRAME ensures triggering accuracy over time.; HIGH SHOCK and VIBRATION RESISTANCE allows for use in tough applications and environments.
Stens 435-001 Limit Switch
Stens 435-001 Limit Switch
Package Weight : 15 pounds; Country of Origin : United States; Part number: 435-001; Includes two connecting points

6 Best Best CNC Limit Switch Kit Reviews

Here is my list of the Best CNC Limit Switch Kit in 2021;

1. TEMCo Plunger Limit Switch Tools

  • Switch Type: Plunger
  • Material: Aluminum, silver calcium oxide
  • Number of Items: 1
  • Dimensions: 0.98 x 1.1 x 3.96 inches
  • Weight: 6.1 ounces

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What we Like!
  • Quilty build
  • Waterproof & rustproof
  • Vibration resistance
  • 5-year warranty

Things to Consider!
  • Not suitable for the high-speed actuators.

Overview

Avai the snap-action contact of the TEMCo Plunger Limit Switch!

The actuator applies the force to the mechanically over-center point. The switch makes a quick change of contact when it reaches the trip point.

The trip and reset points help you avoid the frequent changes of contacts when the object is vibrating. This is the reason that its performance is up to the mark for low-speed actuators.

The TEMCo Plunger Limit Switch Tools is highly shock-absorbent and vibration resistant even for tough machinery and applications. The body of the limit switch is made up of pure aluminum that triggers the accuracy.

The gasket body is oil resistant, dust-proof, and water-proof. The top-notch quality silver calcium oxide contacts have the tendency to perform 10,000,000 operations.

Temco is confident about its electrical switches and dimmers that is why it offers a 5 years warranty to claim any defect or repair.


2. Bonarty 5 Pcs Adjustable Roller Lever

  • Switch Type: Roller
  • Material: Plastic, Metal, Rubber
  • Number of Items: 5
  • Dimensions: 4.53×1.18×1.57inch
  • Weight: 90 g

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What we Like!
  • Perfect for mechanical appliances
  • 90-degree rotation
  • Adjustable lever arm
  • Momentary actuator action

Things to Consider!
  • Not available as a single piece

Overview

Bonarty is one of the market-leading brands for controllers and indicators. Bonarty 5 Pcs Adjustable Roller Lever is exceptionally durable and functional. The limit switch and contacts are made up of plastic, metal, and rubber. Whereas, the contact type is normally closed, normally open.

The actuator or lever arm moves to the left and right by 90-degree. It works at the rated voltage AC, 250 volts and 5 A, and DC 115V, 0.4 Ampere. The thread diameter is 4.5mm, roller dimension 18 x7mm, the Lever arm length 92mm, and the contact configuration is 2NC(DPDT).

The rotary adjustable actuator along with the roller lets you know the limit of the CNC machine at any critical point. It will eliminate the machine chatter issues by installing one or two limit switches at the axis. It is perfect to install in mechanical and milling machines. Make your work more precise and accurate.


3. Rotary Metal Roller Arm Limit Switch

  • Switch Type: Roller
  • Material: Resin, Plastic, Metal
  • Number of Items: 5
  • Dimensions: 12.3 x 5 x 2.8cm
  • Weight: 408g

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What we Like!
  • Terminal SPDT
  • Rotary actuator type
  • 5 amps current rating
  • Momentary movements

Things to Consider!
  • Moderate build

Overview

The limit switch controls the CNC machine to lead vibrations or any other fault. 5 Pcs Rotary Metal Roller Arm Limit Switch performs exceptionally in this regard.

It is recommended by professionals due to its robust structure and high performance. The momentary actuator action lets you control the CNC machine limit more precisely. This model is designed from top-notch quality materials such as metal, plastic, and resin.

The limit switches are available in three color variations including Blue, Gray, and black. It is functional at 250V, 5A alternating current, and 115V, 0.4A direct current. The package includes 5 pcs of limit switches.

The roller movements are snapping and detect the object’s presence in a second. The roller dimensions are 1.8 X 0.7 inches, the lever arm length is 5cm and the thread diameter is 0.4cm. The rotatory motion of the adjustable lever arm along with the roller is snappy and quick.


4. uxcell Parallel Roller Plunger Mini Limit Switch

  • Switch Type: Roller plunger
  • Material: Resin, Plastic, Metal
  • Number of Items: 1
  • Dimensions: 3 x 1.2 x 1 inches
  • Weight: 0.8 ounces

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What we Like!
  • Reliable and safe
  • Small installation
  • Rotate left and right
  • Dust-proof

Things to Consider!
  • Expensive as compare to others

Overview

Boost your machinery processes including milling, turning, and drilling!

Uxcell is one of the recognized brands for daily use accessories. The tagline of this brand is “Everything for life”. It offers great products from electronics, hardware, tools, power transmission, home & garden, automotive and more.

One of the exclusive categories is control & indicators under which you find the best CNC limit switch known as Uxcell Parallel Roller Plunger Mini Limit Switch. Here it comes with a hybrid model of roller and plunger. It is functional at 250V AC and 5A DC.

The limit switch is made up of resin, plastic, and metal materials. It is a safe and reliable limit switch. Moreover, it is oil and dust-proof. You can install it in a few minutes. The best part is it is compatible with other contacting heads and rods.

A perfect limit switch for pantry light switch, wobble light, 3d printer, light switch, endstop, CNC router, printer, laser, door switch, closet door switch, garage door, and door operated switch.


5. Stens 435-001 Limit Switch

Best CNC Limit Switch

  • Switch Type: Limit Switch
  • Material: Resin, Plastic, Metal
  • Number of Items: 1
  • Dimensions: 3 x 3 x 1 inches
  • Weight: 1.6 ounces

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What we Like!
  • Robust and sturdy
  • Innovative design
  • Efficient performance
  • 90- the degree Lever arm

Things to Consider!
  • Expensive to buy

Overview

Stens is one of the market-leading brands due to its innovative designs and technical advancement. CNC machines require a switch limit to avoid false triggering and machine chatter problems.

When the head of the machine touches the subject, the vibrations can create a visual defect to the piece of the art. Thus, better secure your CNC machine with a reliable and safe limit switch.

Stens limit switch sends signals to the axis to stop moving beyond the travel range. You can install two limit switches per axis.

This model includes two points to connect along with accelerator linkage and direction selectors. It is functional at 15 amps. The made-in United States, Sten’s limit switch can be used as a replacement for the personnel carriers 4 and 83, stock chaser, 640, medalist, TXT, Marathon, gas and electric, 1989, and shower. Moreover, it can replace the OEM numbers including 835636, 10606G1, 31535G1, 10606G2, and 17928G1.


6. uxcell Coil Spring Actuator Enclosed Limit Switch

  • Switch Type: Plunger
  • Material: Plastic
  • Number of Items: 1
  • Dimensions: 3 x 3 x 1 inches
  • Weight: 1.6 ounces

See at Amazon!

What we Like!
  • Wobble stick actuator
  • Terminal limit protection
  • Small and quick installation
  • Wide compatibility

Things to Consider!
  • Plastic encasing

Overview

Uxcell is one of the market-leading brands due to its effective solution for everyday use accessories. uxcell Coil Spring Actuator Enclosed Limit Switch offers lifetime durability and excellent performance throughout.

This model is quite different from the above mentioned top 5 CNC limit switch. Its actuator is plunger-type along with a rod coil spring. It offers momentary motions and quick response with the CNC machine reaches a limit. The other plus of the actuator is its wobble stick, contact type 1NC, and automatic reset.

The coil spring size is 6 x 45mm and 1.8 x 3.6-inches in diameter. The mounting hole diameter is 4.4mm and the mounting hole distance is 56 x 21mm. Uxcell Coil Spring Actuator Enclosed Limit Switch is functional at 250V AC at 5 amperes.

You can easily install this limit switch on the garage switch, door operated switch, closet door switch, pantry light switch, printer, 3D printer, endstop, CNC router, laser, light switch, wobble light, and more.


Factors to consider while choosing a CNC limit switch- An Ultimate Buying Guide!

These are small devices that boost the overall performance of the device. Therefore, one must be careful while choosing the right CNC limit switch. We shortlist some important features to consider while choosing a best CNC limit switch

Application and Object scenario

It is important to consider the nature of the project or machine for which you are seeking a limit switch. When the movement of the machine is slow, the path where the machine moves is not defined, then install the roller plunger limit switch in this scenario.

On the other hand, if the nature of your project demands high accuracy and reliability then better to choose the sensor.

Actuator Type

The force exerted between the limit switch and machine is to be considered the most. You must choose the actuator according to the mechanical characteristic of the machine as well as the displacement relationship.

You can find different shapes and types of actuators on the basis of the movement of the target. A great variety is available including roller lever, adjustable rod lever, fork lever, coil spring, adjustable roller lever, and more.

Shell Material

The CNC limit switch shell material is one of the most important features to look into. The shell material is mostly plastic and metal. You must choose the one according to the load of the limit switch.

If you need a limit switch for light or medium load then choose a plastic-made CNC limit switch. On the other hand, if you need a limit switch to bear heavy loads then choose the metal-made limit switch.

Rated Current and Voltage

Check on which voltage and current values the limit switch is operational. The values may vary from model to model. Thus, have a close look at which AC & DC values are mentioned in product specifications.

Environment

Monitor the environment for which you intend to buy the limit switch. The factors such as ambient temperature, shock absorbent, protection, and more. For instance, a waterproof limit switch can be used for industrial occasions such as oil-resistant or dust-proof.

Final Verdict

So, what are you waiting for? Avail of the CNC limit switch to improve your CNC machine performance. Grab the CNC limit switch to make your CNC machine more vulnerable to environmental factors like shock absorbent, ambient temperature, and more.

The editor’s choice is TEMCo Plunger Limit Switch Tools due to its aluminum body and silver calcium oxide switch. Moreover, it comes with a 5-year warranty to claim any defect.

Resolve the issues of false triggering, machine vibrations, and electrical interference by installing a CNC limit switch on the axis.

Protect your machinery with safe and reliable limit switches!

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FAQ’s about CNC limit switch

Here are a few questions that people need to know;

What is the best Best Best CNC Limit Switch?

Here is my list of the Best CNC Limit Switch Kit in 2021;

  • TEMCo Plunger Limit Switch Tools
  • Bonarty 5 Pcs Adjustable Roller Lever
  • Rotary Metal Roller Arm Limit Switch
  • uxcell Parallel Roller Limit Switch
  • Stens 435-001 Limit Switch
  • uxcell Coil Enclosed Limit Switch

What is the benefit of a CNC limit switch?

It is a simple contact switch that eliminates machine vibrations, electrical interference, and false triggering throughout the operation. Basically, the limit switch will not let the axis move beyond the range. So, Perform machinery processes such as drilling, milling, grinding, or turning with accuracy and precision.

What variations of a CNC limit switch are available?

You can find simple and hybrid limit switches. There are four types of limit switches including Whisker, Lever, Roller, and plunger. The hybrid is the further combination of these basis limit switches such as a lever-roller limit switch.

What factors to consider while buying a CNC Limit switch.

The primary factor to consider is the type of actuator and the shell material. As the whole performance of a limit switch depends upon it. Later, Rated current and voltage, ambient temperature, protection, contact module, operating speed, minimum force are the other factors to look into.

What is the limit switch configuration settings?

These switches are available as normally open, normally close, or one of each.

David Houghton

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