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Gemco Parts Description Page 13


Part
Number
Product
Category
Description
2000-816 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-816 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuits / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 1 & 12 Rated Die Cast Enclosure with Fibralloy Cover 
1 to 1 Input Shaft Ratio, Every Turn of the Main Shaft the Cam Block Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from the Enclosure 
Includes Woodruff Keyway & a #404 Woodruff Key 
0.0120 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-817 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-817 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuits / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 1 & 12 Rated Die Cast Enclosure with Fibralloy Cover 
1 to 1 Input Shaft Ratio, Every Turn of the Main Shaft the Cam Block Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from the Enclosure 
Includes Woodruff Keyway & a #404 Woodruff Key 
0.008 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-818 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-818 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuits / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 1 & 12 Rated Die Cast Enclosure with Fibralloy Cover 
2 to 1 Input Shaft Ratio, Every Two Turn of the Main Shaft the Cam Block Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from the Enclosure 
Includes Woodruff Keyway & a #404 Woodruff Key 
0.0120 Turns to Reset 
0.050 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-819 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-819 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuits / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches #  
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 1 & 12 Rated Die Cast Enclosure with Fibralloy Cover 
3 to 1 Input Shaft Ratio, Every 3 Turns of the Main Shaft the Cam Block Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from the Enclosure 
Includes Woodruff Keyway & a #404 Woodruff Key 
0.075 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-820 Brake Parts Ametek Gemco Rotary Limit Switch 
Spur Gear Type with Potentiometer 
NEMA 12 Rated Die Cast Housing with a Fibralloy Cover 
Gear Ratio is 1 to 1 from the Main Shaft to the Cam Block & the Potentiometer 
Two SPDT Switches. Basic Switch Data see symbol A page 12 
Potentiometers are rated at 2 Watts  
Many resistance values are available  
Quoting a 5K resistance potentiometer 
Unique mounting features permit the switch to be mounted in any of 3 different positions. Mounting holes are independent of the enclosure cover 
 
2000-832 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-832 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
2 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches 
Basic Switch Data see Table 2 Symbol A on Page 13 
NEMA 4 Rated Die Cast Enclosure 
1 to 1 Input Shaft Ratio, Every 1 Turn of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance 
(5LBS)
2000-833 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 4 Enclosure, 1/2 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-834 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, UL Listed Snap Action Switches with S.P.D.T. Contacts, Die Cast NEMA 4 Enclosure, 1/3rd to 1 Input Shaft Revolution, 1 Cam Block Revolution. For basic switch data see table 2 symbol A.
2000-835 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cams / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 4 Enclosure, 2 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-836 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cams, Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 4 Enclosure, 3 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-837 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-841 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
2 Independent Circuit / Cams / Switches 
D.P.D.T. Snap Action U.L. Listed Switches 
Basic Switch Data see Table 2 Symbol B on Page 13 
NEMA 4 Rated Die Cast Enclosure, Watertight 
1 to 1 Input Shaft Ratio, Every 1Turn of the Main Shaft Cam Rotates Once 
Maximum Turns to set the switch 0.9, minimum 0.05, 0.025 to reset the switch 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance
2000-839 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-841 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
2 Independent Circuit / Cams / Switches 
D.P.D.T. Snap Action U.L. Listed Switches 
Basic Switch Data see Table 2 Symbol B on Page 13 
NEMA 4 Rated Die Cast Enclosure, Watertight 
1/3 to 1 Input Shaft Ratio, Every 1/3 Turn of the Main Shaft Cam Rotates Once 
Maximum Turns to set the switch 0.30, minimum 0.16, 0.008 to reset the switch 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance
2000-841 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-841 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
2 Independent Circuit / Cams / Switches 
D.P.D.T. Snap Action U.L. Listed Switches 
Basic Switch Data see Table 2 Symbol B on Page 13 
NEMA 4 Rated Die Cast Enclosure, Watertight 
3 to 1 Input Shaft Ratio, Every 3 Turns of the Main Shaft Cam Rotates Once 
Maximum Turns to set the switch 2.7, minimum 0.15, 0.075 to reset the switch 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance
2000-842 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-842 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
3 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
1 to 1 Input Shaft Ratio, Every 1 Turns of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance 
(5LBS)
2000-844 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Three Independent Circuits / Cam / Switches, UL Listed Snap Action Switches with S.P.D.T. Contacts, Die Cast NEMA 4 Enclosure, 1/3rd input shaft revolution to 1 cam block revolution. For basic switch data see table 2 symbol C.
2000-847 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-847 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
1 to 1 Input Shaft Ratio, Every Turn of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
0.025 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-848 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-848 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
1/2 to 1 Input Shaft Ratio, Every 1/2 Turn of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
0.0120 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-849 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-849 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
1/3 to 1 Input Shaft Ratio, Every 1/3 Turn of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
0.008 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-850 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-850 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
2 to 1 Input Shaft Ratio, Every 2 Turns of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
0.050 Turns to Reset 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-851 Brake Parts Ametek Gemco Rotary Limit Switch 
2000-851 Spur Gear Type for Ultra Sensitive Control of Small Increments of Motion 
4 Independent Circuit / Cams / Switches 
S.P.D.T. Snap Action U.L. Listed Switches # 04537004 
Basic Switch Data see Table 2 Symbol C on Page 13 
NEMA 4 Rated Die Cast Aluminum Enclosure 
3 to 1 Input Shaft Ratio, Every 3 Turns of the Main Shaft Cam Rotates Once 
1/2 Inch Diameter Main Shaft which Extends 1 & 1/2 Inch from Enclosure 
Includes Keyway & a #404 Woodruff Key 
3/4 -14 N.P.T. Electrical Entrance 
(4LBS)
2000-854 Brake Parts Ametek Gemco Limit Switch. Series 2000 Spur Gear Type Rotary Limit Switch with Potentiometer 04516086 100 OHM  
2 Circuit / Cam / Switches 
SPDT Switches, Single Pole Double Throw, Basic Switch Data Symbol "A" page 13 
0.9 Degree of a Turn Maximum setting between settings 
0.05 Degree of a Turn Minimum setting between settings 
0.025 Degree of a Turn to Reset the Switch 
1 to 1 Ratio, Spur Gear Ratio, Cam bock turns once every revolution of the main shaft 
1 to 3 Potentiometer Ratio. Potentiometers are rated @ 2 Watts, Linear Taper 
Standard Cams, 25 or 335 Degree 
1/2 Inch Diameter Output Shaft with a No 404 Woodruff Key & Keyway  
NEMA 4 Rated Enclosure, Watertight 
(5LBS) 10/7
2000-864 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cam / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 7 Enclosure, 1 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-865 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cam / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 7 Enclosure, 1/2 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-866 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cam / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 7 Enclosure, 1/3 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-867 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cam / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 7 Enclosure, 2 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-868 Brake Parts Ametek Gemco Rotary Limit Switch. Spur Gear Type, Two Independent Circuits, Cam / Switches. UL Listed Snap Action Switches with S.P.D.T. Contacts, NEMA 7 Enclosure, 3 to 1 Input Shaft Ratio. For basic switch data see table 2 symbol A
2000-89B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/16 
Maximum switch setting @ 4 & 3/4 Turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(3LBS)
2000-8B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
100 to 1 Ratio Gear Ratio, the cam block rotates once every 100 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 3/4 
Maximum switch setting @ 94 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(3LBS)
2000-90B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
10 to 1 Ratio Gear Ratio, the cam block rotates once every 10 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 12 Fibralloy Enclosure 
Turns required to reset switch 1/16th 
Maximum switch setting @ 9.5 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-91B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
20 to 1 Ratio Gear Ratio, the cam block rotates once every 20 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/8th 
Maximum switch setting @ 19 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-92B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
30 to 1 Ratio Gear Ratio, the cam block rotates once every 30 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/4 
Maximum switch setting @ 28 & 1/2 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-93B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
40 to 1 Ratio Gear Ratio, the cam block rotates once every 40 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/2 
Maximum switch setting @ 38 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-94B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
50 to 1 Ratio Gear Ratio, the cam block rotates once every 50 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/2 
Maximum switch setting @ 47 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-95B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
60 to 1 Ratio Gear Ratio, the cam block rotates once every 60 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537001 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 12 Rated Enclosure 
Turns required to reset switch 1/2 
Maximum switch setting @ 57 & 1/2 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-96B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
80 to 1 Ratio Gear Ratio, the cam block rotates once every 80 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 1 & 12 Enclosure 
Turns required to reset switch 1/2  
Maximum switch setting @ 76 & 3/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-97B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
100 to 1 Ratio Gear Ratio, the cam block rotates once every 100 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 04537001 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 12 Rated Enclosure 
Turns required to reset switch 1 & 1/2 
Maximum switch setting @ 56 & 1/4 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(4LBS)
2000-98B Brake Parts Ametek Gemco Series 2000 Worm Gear Type Rotary Limit Switch. 4 Independent Standard Dwell Cams / Circuits / Switches, UL Listed Snap Action S.P.D.T. Switches, NEMA 1 & 12 Fibralloy Enclosure, 250 to 1 Gear Ratio. 1/2 Inch input shaft with woodruff key. Maximum RPM 1000. Maximum operating temperature 180 degree F. (6LBS)
2000-99B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
500 to 1 Ratio Gear Ratio, the cam block rotates once every 500 turns of the main shaft 
4 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 12 Enclosure 
Turns required to reset switch 7 
Maximum switch setting @ 460 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-9B Brake Parts Ametek Gemco Rotary Limit Switch 
Series 2000 Worm Gear Type with Bronze Gears & Steel Cams 
5 to 1 Ratio Gear Ratio, the cam block rotates once every 5 turns of the main shaft 
2 Independently Adjustable Switches/ Circuits / Cams 
Single Pole Double Throw U.L. Listed Precision Snap Action Switches which can be wired for normally open or closed circuits. 4 Screw Terminals 
Standard Cams allow switch contacts to be opened for 25 or 335 Degrees. Other cam dwells are available 
NEMA 4 Rated Cast Aluminum Enclosure, Watertight 
Turns required to reset switch 1/16 
Maximum switch setting @ 4 & 1/2 turns 
Up to 1000 RPM Clock Wise or CCW 
1/2 Inch Diameter Input Shaft Extends 1 & 1/2 Inch from the Enclosure, Includes a Woodruff Keyway & # 404 Key 
Maximum Operating Temperature 180 Degrees F 
1/2 -14 American Standard Pipe Thread Entrance 
(6LBS)
2000-XXXX Brake Parts Ametek Gemco Engineered part number to be established
2006-1435 Brake Parts Ametek Gemco Geared Rotary Limit Switch. 2006 Series. 60 to 1 Gear Ratio. NEMA 4 Enclosure. Left Hand Shaft Extension. 2 Circuit with SPDT Switches. Gemco compatible resolver
2006-1464 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 2 Independent Circuits / Cams / Switches, NEMA 4 Enclosure, Left Hand Shaft Extension, 20 to 1 Gear Ratio, S.P.D.T. Single Pole Double Throw Precision Snap Switches, with Potentiometer 4/7
2006-1483 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 2 Circuit, NEMA 4 Enclosure, Left Hand Shaft Extension, 80 to 1 Gear Ratio, Both Snap Switches are Double Pole Double Throw. Special Long Dwell 45 Degree Cams (5LBS)
2006-1484 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 2 Circuit, NEMA 4 Enclosure, Left Hand Shaft Extension, 40 to 1 Gear Ratio, Both Snap Switches are Double Pole Double Throw. Special Long Dwell 45 Degree Cams (5LBS)
2006-1505 Brake Parts Ametek Gemco Geared Rotary Limit Switch 
Like 2006-402-L-30-A 
1505 = Specially Engineered Product, Unit to include a mounted 500 Ohm Potentiometer that has a 1 to 1 ratio with the cam block 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
30 = 30 to 1 Gear Ratio. Cam Block turns once every 30 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
3/8 Shaft Turn required to reset the switch 
Maximum switch setting at 26 turns, minimum at 1 turn 
(4LBS)
2006-1543 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 2 Independent Air Valves, NEMA 4 Enclosure, Left Hand Shaft Extension, 357 to 1 Gear Ratio (6LBS)
2006-1547 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 4 Independent Circuits / Cams / Switches, NEMA 4 Enclosure, Left Hand Shaft Extension, 120 to 1 Gear Ratio, Qty 2, S.P.D.T. Single Pole Double Throw Precision Snap Switches & Qty 2, D.P.D.T. Double Pole Double Throw Precision Snap Switches. Qty. 2, 180 Degree Dwell Cams & Qty. 2, Standard Dwell Cams (6LBS)
2006-1549 Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006 Type "K" 
1549 = Specially Engineered Product 
Qty. 2, Circuit with SPDT Switches 
50 to 1 Gear Ratio 
NEMA 4 Enclosure, LH Shaft Output 
10K Pot with a 1 to 1 Ratio  
2006-2003 Brake Parts Ametek Gemco Type K Rotary Limit Switch, 2 Independent Circuits / Cams / Switches. NEMA 4 Enclosure, Left Hand Shaft Extension, 15 to 1 Gear Ratio, Snap Action Switches are Single Pole Double Throw. This specially engineered unit also includes an External Gear Reducer with a Right Angle Shaft Extension and Mounting Base Plate. 40 to 1 Gear Ratio # SD0315400 (8LBS)
2006-2015 Brake Parts Ametek Gemco Geared Rotary Limit Switch 
Same as 2006-402-L-30-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
30 = 30 to 1 Gear Ratio. Cam Block turns once every 30 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
3/8 Shaft Turn required to reset the switch 
Maximum switch setting at 26 turns, minimum at 1 turn 
C-H 10316H-4557-1 
(4LBS)
2006-2017 Brake Parts Ametek Gemco Series 2000 Type K Rotary Limit Switch, 2006-404-L-60-A, 4 Circuit, NEMA 4 Enclosure, Left Hand Shaft Extension, 60 to 1 Ratio, All Switches Single Pole Double Throw. (SPDT)
2006-402-L-10-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-10-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
10 = 10 to 1 Gear Ratio. Cam Block turns once every 10 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
1/8 Turns required to reset the switch 
Maximum switch setting at 8 & 1/2 turns, minimum at 1/4 turn 
C-H 10316H-1016-1 
(4LBS)
2006-402-L-10-C Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-10-C 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
10 = 10 to 1 Gear Ratio. Cam Block turns once every 10 turns of the main shaft 
C = Double Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 8 Screw Terminals per Switch # 1950-4-B-A-DO 
1/8 Turns required to reset the switch 
Maximum switch setting at 8 & 1/2 turns, minimum at 1/4 turn 
C-H 10316H-1016-1 
(4LBS)
2006-402-L-1080-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-1080-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
1080 = 1080 to 1 Gear Ratio. Cam Block turns once every 1080 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
13.5 Turns required to reset the switch 
Maximum switch setting at 954 turns, minimum at 36  
C-H 10316H-169-1 
(5LBS)
2006-402-L-1080-C Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-1080-C 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
1080 = 1080 to 1 Gear Ratio. Cam Block turns once every 1080 turns of the main shaft 
C = Double Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-4-B-A-DO 
13.5 Turns required to reset the switch 
Maximum switch setting at 954 turns, minimum at 36  
C-H  
(5LBS)
2006-402-L-120-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-120-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Watertight Die Cast Enclosure 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with # 3 Woodruff Key & Keyway 
120 = 120 to 1 Gear Ratio. Cam Block turns once every 120 turns of the main shaft 
A = Single Pole Double Throw Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch 1950-1-B-A-DO 
1 & 1/2 Turns required to reset the switch 
Maximum switch setting at 108 turns, minimum at 3 turn 
C-H 10316H-155-1 
(4LBS)
2006-402-L-120-C Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-120-C 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Watertight Die Cast Enclosure 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with # 3 Woodruff Key & Keyway 
120 = 120 to 1 Gear Ratio. Cam Block turns once every 120 turns of the main shaft 
C = Double Pole Double Throw Switches. Can be wired for either normally open or closed circuits. 8 Screw Terminals per Switch 1950-4-B-A-DO 
1 & 1/2 Turns required to reset the switch 
Maximum switch setting at 108 turns, minimum at 3 turn 
(4LBS)
2006-402-L-20-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-20-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
20 = 20 to 1 Gear Ratio. Cam Block turns once every 20 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
1/4 Turns required to reset the switch 
Maximum switch setting at 17 turns, minimum at 1/2 turn 
C-H 10316H-1017-1 
(4LBS)
2006-402-L-20-C Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-20-C 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
20 = 20 to 1 Gear Ratio. Cam Block turns once every 20 turns of the main shaft 
C = Double Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 8 Screw Terminals per Switch # 1950-4-B-A-DO 
1/8 Turns required to reset the switch 
Maximum switch setting at 8 & 1/2 turns, minimum at 1/4 turn 
(4LBS)
2006-402-L-270-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-270-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
270 = 270 to 1 Gear Ratio. Cam Block turns once every 270 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
3.375 Shaft Turns required to reset the switch 
Maximum switch setting at 236 turns, minimum at 6.75 turns 
C-H 10316H-4599-1 
(5LBS)
2006-402-L-30-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-30-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
30 = 30 to 1 Gear Ratio. Cam Block turns once every 30 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
3/8 Shaft Turn required to reset the switch 
Maximum switch setting at 26 turns, minimum at 1 turn 
C-H 10316H-4557-1 
(4LBS)
2006-402-L-30-B Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-30-B 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
30 = 30 to 1 Gear Ratio. Cam Block turns once every 30 turns of the main shaft 
B = One Double Pole Double Throw Snap Action Switch. Can be wired for either normally open or a closed circuit. 8 Screw Terminals per Switch # 1950-4-B-A-DO and One Single Pole Double Throw Snap Action Switch. Can be wired for either normally open or a closed circuit. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
3/8 Shaft Turn required to reset the switch 
Maximum switch setting at 26 turns, minimum at 1 turn 
(5LBS)
2006-402-L-30-C Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-30-C 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
30 = 30 to 1 Gear Ratio. Cam Block turns once every 30 turns of the main shaft 
C = Double Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 8 Screw Terminals per Switch # 1950-4-B-A-DO 
3/8 Shaft Turn required to reset the switch 
Maximum switch setting at 26 turns, minimum at 1 turn 
(5LBS)
2006-402-L-357-A Brake Parts Ametek Gemco Geared Rotary Limit Switch 
2006-402-L-357-A 
2006 = Type "K" Rotary Limit Switch 
4 = NEMA 4 Rated Die Cast Enclosure, Watertight 
02 = 2 Independent Circuits / Switches / Cams 
L = Left Hand Shaft Extension from the Enclosure. 1/2 Dia. x 1 & 1/2 Inch Extension with Woodruff Keyway & # 404 Woodruff Key 
357 = 357 to 1 Gear Ratio. Cam Block turns once every 357 turns of the main shaft 
A = Single Pole Double Throw Snap Action Switches. Can be wired for either normally open or closed circuits. 4 Screw Terminals per Switch # 1950-1-B-A-DO 
4.46 Shaft Turns required to reset the switch 
Maximum switch setting at 350 turns, minimum at 12 turns 
C-H 10316H-167-1 
(5LBS)
203 Vest Avenue
Valley Park, MO 63088
Toll Free: (888) SPECTECH
Phone: (636) 537-0202
Fax: (636) 537-1405
E:mail: sales@spectechind.com