Limit Switch Assembly

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Includes:

  • Limit switch (with pigtail and connector)
  • Limit switch mounting hardware

About the limit switches, optical encoder speed control cables, and mounts

The controller board that we have made for us by MASSO is designed specifically for our machines. The software and the wiring configurations are proprietary to Sherline Products.

You can purchase any of the limit switches, or optical encoder, and their associated cables and mounts from Sherline. However, these components and cable connections are not compatible with any stock MASSO board that you buy directly from MASSO.

This is especially true regarding the optical encoder and our speed control. Our speed control is an older analog system that is being controlled through software that was created specifically for our system. If you were to connect our optical encoder to your stock MASSO board, you may get an accurate RPM readout, but you would not be able to control the RPM of the spindle motor with G-code.

That being said, you can purchase the limit switches with their pigtail and connector. You can also purchase our limit switch mounts and eccentric triggers to be mounted on your Sherline machine. You may then connect them to any controller that is configured to work with our limit switches.

There will be one or two holes that need to be drilled and tapped on your machine in order to retrofit some of our limit switch mounts.

NOTE: Click on the Instructions tab above for mounting hole information and how to modify your accordion way cover (leadscrew mills only).

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The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.

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Always wear safety glasses when operating machine tools.

Leadscrew Mills
P/N 8796 X-axis limit switch kit-leadscrew mill
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68022X-axis Limit Switch Mount1
68046Limit switch mounting tab1
68048#2 Phillips x 1/2″ flat-head sheet metal screws2
120508-32 x 3/8″ SHCS (This is for the limit switch stop)1
P/N 8797 Y-axis limit switch kit-leadscrew mill
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68024Y-axis limit switch mount1
68046Limit switch mounting tab1
68049#2 Phillip x 5/8″ flat-head sheet metal screws2
671155-40 x 7/8″ SHCS2
68039Eccentric trigger1
68044Nylon spacer1
4034010-32 x 1″ SHC screw1
878411/8″ x 1-1/2″ steel transfer punch for mill Y-axis limit switch (Retrofit)1
P/N 8798 Z-axis limit switch kit-leadscrew mill (5400 Mills)
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68022Z-axis limit switch mount1
68046Limit switch mounting tab1
68048#2 Phillip flat-head sheet metal screws2
120508-32 x 3/8″ SHC screw1
68042Eccentric trigger1
P/N 8777 Z-axis limit switch kit-leadscrew mill (2000 & 5800 Mills)
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68020Z-axis limit switch mount1
68046Limit switch mounting tab1
68048#2 Phillip flat-head sheet metal screws2
120508-32 x 3/8″ SHC screw1
68042Eccentric trigger1
P/N 8789 XY-axis limit switch kit-leadscrew mill (All Leadscrew Mills)
Part No.DescriptionQuantity
8796X-Axis Limit Switch Assembly1
8797Y-Axis Limit Switch Assembly1
P/N 8772 XYZ-axis limit switch kit-leadscrew mill (5400 Mills)
Part No.DescriptionQuantity
8796X-Axis Limit Switch Assembly1
8797Y-Axis Limit Switch Assembly1
8798Z-Axis Limit Switch Assembly (5400 Mills)1
P/N 8799 XYZ-axis limit switch kit-leadscrew mill (2000 & 5800 Mills)
Part No.DescriptionQuantity
8796X-Axis Limit Switch Assembly1
8797Y-Axis Limit Switch Assembly1
8777Z-Axis Limit Switch Assembly1
P/N 8794 XYZ & A-axis limit switch kit-leadscrew mill (5400 Mills)
Part No.DescriptionQuantity
8796X-Axis Limit Switch Assembly1
8797Y-Axis Limit Switch Assembly1
8798Z-Axis Limit Switch Assembly (5400 Mills)1
8740A-Axis Limit Switch kit1
P/N 8779 XYZ & A-axis limit switch kit-leadscrew mill (2000 & 5800 Mills)
Part No.DescriptionQuantity
8796X-Axis Limit Switch Assembly1
8797Y-Axis Limit Switch Assembly1
8777Z-Axis Limit Switch Assembly1
8740A-Axis Limit Switch kit1
Ball Screw Mills
P/N 8782 X-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68026X-axis limit switch mount1
812702-56 x 3/8″ Phillips head machine screws2
6803510-32 x 7/16″ Phillips flat-head screw1
3210010-32 Hex nut1
405305-40 x 3/8″ SHC screws2
P/N 8783 Y-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68024Y-axis limit switch mount1
68046Limit switch mounting tab1
68049#2 Phillip x 5/8″ flat-head sheet metal screws2
671155-40 x 7/8″ SHCS2
68039Eccentric trigger1
68044Nylon spacer1
4034010-32 x 1″ SHC screw1
878411/8″ x 1-1/2″ steel transfer punch for mill Y-axis limit switch (Retrofit)1
P/N 8777 Z-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68020Z-axis limit switch mount1
68046Limit switch mounting tab1
68048#2 Phillip flat-head sheet metal screws2
120508-32 x 3/8″ SHC screw1
68042Eccentric trigger1
P/N 8788 XY-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
8782X-Axis Limit Switch Assembly1
8783Y-Axis Limit Switch Assembly1
P/N 8785 XYZ-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
8782X-Axis Limit Switch Assembly-Ball Screw Mill1
8783Y-Axis Limit Switch Assembly-Ball Screw Mill1
8777Z-Axis Limit Switch Assembly-Ball Screw Mill1
P/N 8793 XYZ & A-axis limit switch kit-ball screw mill
Part No.DescriptionQuantity
8782X-Axis Limit Switch Assembly1
8783Y-Axis Limit Switch Assembly1
8777Z-Axis Limit Switch Assembly1
8740A-Axis Limit Switch Assembly1
Chucker Lathe
P/N 8786 X-axis limit switch kit-chucker lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68026X-axis limit switch mount1
812702-56 x 3/8″ Phillips head machine screws2
6803510-32 x 7/16″ Phillips flat-head screw1
3210010-32 Hex nut1
405305-40 x 3/8″ SHC screws2
P/N 8783 Z-axis limit switch kit-chucker lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68024Y-axis limit switch mount1
68046Limit switch mounting tab1
68049#2 Phillip x 5/8″ flat-head sheet metal screws2
671155-40 x 7/8″ SHCS2
68039Eccentric trigger1
68044Nylon spacer1
4034010-32 x 1″ SHC screw1
878411/8″ x 1-1/2″ steel transfer punch for mill Y-axis limit switch (Retrofit)1
P/N 8790 XZ-axis limit switch kit-chucker lathe
Part No.DescriptionQuantity
8786X-Axis Limit Switch Assembly-Chucker Lathe1
8783Z-Axis Limit Switch Assembly-Chucker Lathe (same as Y-axis Assembly-Ball Screw Mill)1
Leadscrew Lathes
P/N 8773 X-axis limit switch kit-leadscrew lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68042Eccentric trigger1
120508-32 c 3/8″ SHCS1
68048#2 Phillips x 1/2″ flat-head sheet metal screws2
68046Limit switch mounting tab1
68031X-axis limit switch mount1
P/N 8774 Z-axis limit switch kit-leadscrew lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68042Eccentric trigger1
120508-32 c 3/8″ SHCS1
68048#2 Phillips x 1/2″ flat-head sheet metal screws2
68046Limit switch mounting tab1
68020Z-axis limit switch mount1
P/N 8778 XZ-axis limit switch kit-leadscrew lathe
Part No.DescriptionQuantity
8773X-Axis Limit Switch Assembly-Leadscrew Lathe1
8774Z-Axis Limit Switch Assembly-Leadscrew Lathe1
Ball Screw Lathes
P/N 8791 X-axis limit switch kit-ball screw lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
812702-56 x 3/8″ Phillips head machine screws2
405305-40 x 3/8″ SHCS2
68041Eccentric trigger1
420508-32 x 3/8″ SHCS1
40660#10 washer1
68028X-axis limit switch mount1
P/N 8792 Z-axis limit switch kit-ball screw lathe
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68048#2 Phillips x 1/2″ flat-head sheet metal screws2
68042Eccentric trigger1
120508-32 x 3/8″ SHCS1
68046Limit switch mounting tab1
68030Z-axis limit switch mount1
405305-40 x 3/8″ SHCS2
46213Limit switch mount spacer1
209708-32 x 1/2″ SHCS2
P/N 8795 XZ-axis limit switch kit-ball screw lathe
Part No.DescriptionQuantity
8791X-Axis Limit Switch Assembly-Ball Screw Lathe1
8792Z-Axis Limit Switch Assembly-Ball Screw Lathe1
Rotary Table
P/N 8740 A-axis limit switch kit-rotary table
Part No.DescriptionQuantity
68040Limit switch w/pigtail1
68048#2 Phillips x 1/2″ flat-head sheet metal screws2
870878-32 x 1/4″ set screw, flat bottom1
870886-32 x 3/8″ Pan head screw1
87094A-axis limit switch mount1
87095A-axis trigger1

Installing Limit Switches on a Ball Screw Mill

Rotary Table Limit Switch Install