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Gemco Part Description Page 3

Part
Number
Product
Category
Description
1950-1416 Brake Parts Ametek Gemco Switch. Obsolete 1/6 Precision Snap Switch, Single Pole Double Throw, Slow Make Slow Break with a Heavy duty / strong Spring for High Vibration Applications. Only one contact that is Normally Closed. Replaced by 1950-1414, though it is NOT an exact duplicate replacement, see specifications (<1LB)
1950-4-B-A-AO Brake Parts Ametek Gemco Switch 
1950 = Precision, Snap Action, Switch Assembly Mfg by Gemco 
4 = Double Pole Double Throw / D.P.D.T., Eight Screw Terminals, can be wired for either a Normally Open or Normally Close Circuits 
B = Binder / Screw Terminals 8 
A = Front Mounting 
AO = Switch Plunger operated via cam or roller follower 
U.L. Listed, 15 AMPS, 110 - 600 Volts AC / DC 
-50 to 185 Degree F 
Recommended replacement @ 15 million cycles 
(<1LB)
1950-4-B-A-AR Brake Parts Ametek Gemco Switch 
1950 = Precision, Snap Action, Switch Assembly Mfg by Gemco 
4 = Double Pole Double Throw / D.P.D.T., Eight Screw Terminals, can be wired for either a Normally Open or Normally Close Circuits 
B = Binder / Screw Terminals 8 
A = Front Mounting 
A = Switch Plunger operated via cam or roller follower 
R = Rubber boot for addition protection form humidity and dust 
U.L. Listed, 15 AMPS, 110 - 600 Volts AC / DC 
-50 to 185 Degree F 
Recommended replacement @ 15 million cycles 
(<1LB)
1950-4-B-A-BR Brake Parts Ametek Gemco Switch. Precision Snap Limit Switch Unit. Double Pole Double Throw (D.P.D.T.) 2-NO / 2-NC, Plunger operated by Lever & 1/2 Inch Diameter Roller Assembly. Includes Boot
1950-4-B-A-DO Brake Parts Ametek Gemco Switch. Precision Snap Action Switch Assembly. DPDT Double Pole Double Throw, Qty. 8 Screw Terminals, can be wired for either a Normally Open or Normally Close Circuit, Front Mounting, Plunger Push Operator, 2006 Type K, U.L. Listed (<1LB)
1950-4-C-A-DO Brake Parts Ametek Gemco Switch. Precision Snap Action Limit Switch Assembly. Double Pole Double Throw / D.P.D.T., Eight Screw Terminals, can be wired for either Normally Open or Normally Closed Circuits.Front Mount, Plunger Push Operator. 915 / 917 Cycl-Set & 2006 K RS (<1LB)
1950-4-P-A-AO Brake Parts Ametek Gemco Switch. Precision Snap Limit Switch Unit. D.P.D.T. Double Pole Double Throw 2-N.O 2-N.C , Plug-In Type Binder, Front Mounting Arrangement, Plunger Cam Operated.
1950G-1-B-A-AR Brake Parts Ametek Gemco Switch. Precision Snap Limit Switch Unit with Gold Contacts, Single Pole Double Throw (S.P.D.T.), 1 NO - 1NC Contacts, Front Mounting, Plunger with Boot, Cam Operated U.L. Listed (<1LB) 1/8
1970-104 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 2 to 4 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek can detect a broken chain or belt via a supplied travel limit switch is a , spring loaded sub base for chain or belt tensioning and a shock and vibration isolator (9LBS)
1970-106 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 5 to 6 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek can detect a broken chain or belt via a supplied travel limit switch is a , spring loaded sub base for chain or belt tensioning and a shock and vibration isolator (13LBS)
1970-108 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 7 to 8 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek can detect a broken chain or belt via a supplied travel limit switch is a , spring loaded sub base for chain or belt tensioning and a shock and vibration isolator (16LBS)
1970-112 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 9 to 12 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek can detect a broken chain or belt via a supplied travel limit switch is a , spring loaded sub base for chain or belt tensioning and a shock and vibration isolator (19LBS)
1970-116 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 13 to 16 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek can detect a broken chain or belt via a supplied travel limit switch is a , spring loaded sub base for chain or belt tensioning and a shock and vibration isolator
1970-120 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 17 or 20 Circuit Cam Box with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Drive-Chek serves 3 purposes; a broken chain or belt detector via a supplied travel limit switch, spring loaded sub base for chain or belt tensioning and a shock and vibration isolator
1970-1204 Brake Parts Ametek Gemco Drive Chek. Drive Check for a Series 1980 Rotating Cam Limit Switch. 2 to 4 Circuit Frame with a NEMA 4 / 12 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Unit serves 3 purposes; a broken chain or belt detector, a chain or belt tightener and a shock / vibration isolator
1970-1206 Brake Parts Ametek Gemco Drive Chek. Drive Check for a Series 1980 Rotating Cam Limit Switch. 5 to 6 Circuit Frame with a NEMA 4 / 12 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Unit serves 3 purposes; a broken chain or belt detector, a chain or belt tightener and a shock / vibration isolator
1970-1208 Brake Parts Ametek Gemco Drive Chek. Drive Check for a Series 1980 Rotating Cam Limit Switch. 7 to 8 Circuit Frame with a NEMA 4 / 12 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Unit serves 3 purposes; a broken chain or belt detector, a chain or belt tightener and a shock / vibration isolator
1970-1212 Brake Parts Ametek Gemco Drive Chek. Drive Check for a Series 1980 Rotating Cam Limit Switch. 5 to 6 Circuit Frame with a NEMA 12 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Unit serves 3 purposes; a broken chain or belt detector, a chain or belt tightener and a shock / vibration isolator
1970-124 Brake Parts Ametek Gemco Drive Chek for Series 1980 Rotating Cam Limit Switches. For a 21 to 24 Circuit Frame with a NEMA 1 Enclosure. The Drive-Chek is a multi-purpose sub base that is mounted under a chain or drive belt driven mechanism. The Unit serves 3 purposes; a broken chain or belt detector, a chain or belt tightener and a shock or vibration isolator.
1980 Brake Parts Ametek Gemco Series 1980 Micro-Adjust Rotating Cam Limit Switch 
Switch Settings 4 to 356 Degrees without a Tool - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
Model 1980-106-R-DP-X 
1 = NEMA 1 Enclosure 
6 = Qty. 6, Independent Cams / Circuits / Switches 
R = Right Hand Shaft Extension 
DP = DPDT Switches = Double Pole Double Throw 
X = No Timing Dial or timing dial window 
 
CAPE MAY NEW JERSEY MOVEABLE BRIDGE;  
Specification for rotating cam limit switch.  
 
The contractor shall provide a rotating cam limit switch that meets the specification as called out below.  
The cam box shall have 16 circuits each consisting of a micro adjust cam capable of dwells from 4 degrees through 356 degrees utilizing two cam halves.  
The cams shall be adjusted by use of a cam adjustment tool supplied with the cam box and mounted inside of the enclosure on a bracket.  
The cams are adjusted through a 36:1 ratio pinion assembly that will rotate each half of a circuit cam 10 degrees for each complete adjustment hub turn.  
The micro-adjust cams shall maintain an accuracy and repeatability of 1/4 degree.  
Each circuit shall have a precision rugged duty snap action switch with double break contacts that are actuated at a uniform rate to give long life.  
Electrical switches shall be SPDT with one NO and one NC contact per switch.  
Switches shall be rated for at least 15 million cycles.  
The input shaft shall be a 3/4" diameter made of 316 Stainless Steel having a # 606 woodruff key and can be located on the right end, left end or a double ended version can be specified.  
The enclosure, cover, latches, bearing flanges and flange bolts shall be constructed of 304 Stainless Steel meeting a NEMA 4X rating.  
The cam box shall utilize lifetime sealed ball bearings for the input shaft.  
The cam box shall be supplied standard with a three year warranty covering the entire unit.  
The cam box shall be manufactured by Ametek APT, Gemco division out of Clawson Michigan with no substitutions allowed.  
1980-101-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-101-R-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
01 = 1 Independent Cam / Circuit / Switch  
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Warranty 
(10LBS)
1980-102-L-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-102-L-DP-X 
Series 1980 
1 = NEMA 1 Enclosure 
02 = 2 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
DP = DPDT Switches / Double Pole Double Throw Snap Action Switch U.L. Listed  
X = No Timing Dial or Dial Window is provided 
3 Year Warranty 
(11 LBS)
1980-102-L-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-102-L-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
02 = 2 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(11LBS)
1980-102-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-102-R-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
02 = 2 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty
1980-103-L-DP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-L-DP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuits. 8 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Limited Warranty 
(11LBS)
1980-103-L-DP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-L-DP-TD2 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuits. 8 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD2 = Timing Dial Labeled for C.C.W. Rotation 
3 Year Limited Warranty 
(11LBS)
1980-103-L-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-L-DP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed. Switches can be wired to be a Normally Open or Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-103-L-GSP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-L-GSP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension  
GSP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch. With Gold Plated Contacts 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided
1980-103-L-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-L-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(11LBS)
1980-103-R-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-R-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03= 3 Independent Cams / Circuits / Switches  
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
TD1 = Timing Dial Labeled for Clockwise Rotation 
3 Year Warranty 
(12LBS)
1980-103-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-103-R-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
03= 3 Independent Cams / Circuits / Switches  
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Warranty 
(12LBS)
1980-104-D-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-D-DP-X 
Series 1980 
1 = NEMA 1 Enclosure 
4 = 4 Cams / Circuits / Switches 
D = Double Shaft Extension from enclosure  
DP = DPDT Switches / Double Pole Double Throw 
X = No Timing Dial or Dial Window is provided 
(13LBS)
1980-104-D-DPP-R-X-S-200-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-D-DPP-R-X-S-200-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches 
D = Shaft Extension Opposite the Gear Box, Double Shaft 2  
DPP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 8 screw terminals per switch with a Plug in Socket 
R = Rubber boot Option on the switch plunger for additional moisture & dust protection 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
200 = 200 to 1 Gear Ratio 
R = Right End Gear Reducer
1980-104-D-GSP-R-X Brake Parts Ametek Gemco Rotating Cam Limit Switch like Model 1980-104-L-GSP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension  
GSPR = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch. With Gold Plated Contacts & Rubber Seals for additional dust & moisture protection 
X = No Timing Dial or Dial Window is to be provided (12LBS)
1980-104-D-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-D-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
D = Dual Shafts Extending from Enclosure, 2 
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Limited Warranty 
(14LBS)
1980-104-D-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-D-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
D = Double Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial or Dial Window is provided 
3 Year Warranty 
(12LBS)
1980-104-L-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
L = Left Hand Shaft Extension from Enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed. Switches can be wired to be a Normally Open or Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-104-L-GSP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-GSP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension  
GSP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch. With Gold Plated Contacts 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
1980-104-L-SP-R-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-SP-R-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
R = Rubber Boot / Seal on the Switch Plunger for additional moisture protection  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-104-L-SP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-SP-TD2 
Series 1980 
1 = NEMA 1 Enclosure 
4 = 4 Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw 
TD2 = Timing Dial C.C.W. Counter Clock Wise Rotation
1980-104-L-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-104-R-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-R-DP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
4 = 4 Independent Cams / Circuits / Switches  
R = Right Hand Shaft Extension from Enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed. Switches can be wired to be a Normally Open or Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Warranty 
(12LBS)
1980-104-R-SP-R-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-R-SP-R-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
R = Rubber Boot / Seal on the Switch Plunger for additional moisture & dust protection  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-104-R-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-R-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Limited Warranty 
(12LBS)
1980-104-R-SP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-R-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Limited Warranty 
(12LBS)
1980-104-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-R-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-104-X-DP-X-S-10-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-DP-X-S-10-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
10 = 10 to 1 Gear Ratio 
R = Right End Gear Reducer 
(18LBS)
1980-104-X-DP-X-S-1000-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-DP-X-S-1000-R1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
4 = 4 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
1000 = 1000 to 1 Gear Ratio 
R = Right End Gear Reducer Location
1980-104-X-DP-X-S-25-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-DP-X-S-25-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 8 screw terminals per switch 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
25 = 25 to 1 Gear Ratio 
R = Right End Gear Reducer 
(18LBS)
1980-104-X-SP-X-R-400-R1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-SP-X-R-400-R1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
X = No shaft extension opposite gearbox / no double shaft extension  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
R= Right Angle Gear Reducer 
400 = 400 to 1 Gear Ratio 
R1 = Right End Gear Reducer Shaft Location 1
1980-104-X-SP-X-R-5-R1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-SP-X-R-5-R1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
X = No shaft extension opposite gearbox / no double shaft extension  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
R= Right Angle Gear Reducer 
5 = 5 to 1 Gear Ratio 
R1 = Right End Gear Reducer Shaft Location 1
1980-104-X-SP-X-R-8-R1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-SP-X-R-8-R1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
4 = 4 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial 
R= Right Angle Gear Reducer 
8 = 8 to 1 Gear Ratio 
R1 = Right End Gear Reducer Shaft Location 1
1980-104-X-SP-X-S-200-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-X-SP-X-S-200-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial 
S = Straight Drive Gear Reducer 
200 = 200 to 1 Gear Ratio 
R = Right End Shaft Location
1980-105-L-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-L-SP-TD1 
Series 1980 
1 = NEMA 1 Enclosure 
05 = 5 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw Snap Action Switches U.L. Listed 
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Warranty
1980-105-L-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-L-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
05 = 5 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(14LBS)
1980-105-R-DP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-R-DP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Enclosure 
05 = 5 Independent Cams / Circuits / Switches  
R = Right Hand Shaft Extension from enclosure  
DP = DPDT Switches / Double Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuits. 8 screw terminals per switch 
X = No Timing Dial or Dial Window is provided 
3 Year Warranty 
(14LBS)
1980-105-R-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-R-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
05 = 5 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
(14LBS)
1980-105-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-R-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
05 = 5 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Dial Window is to be provided 
3 Year Limited Warranty 
(12LBS)
1980-105-X-SP-X-R-1-L7 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-X-SP-X-R-1-L7 
Series 1980 
1 = NEMA 1 Enclosure 
05 = 5 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches, Single Pole Double Throw Precision Snap Action Switches 
X = No Timing Dial 
R= Right Angle Gear Reducer 
1 = 1 to 1 Gear Ratio 
L7 = Left End Gear Reducer Shaft Location 7
1980-105-X-SP-X-S-14-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-105-X-SP-X-S-14-R 
Series 1980 
1 = NEMA 1 Enclosure 
5 = 5 Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches, Single Pole Double Throw 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
14 = 14 to 1 Gear Ratio 
R = Right End Shaft Location
1980-106-D-SP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-106-D-SP-TD2 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
06 = 6 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
D = Dual Shafts Extending from Enclosure, 2 
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD2 = Timing Dial Labeled for Counter Clock Wise Rotation 
3 Year Limited Warranty 
(16LBS)
1980-106-D-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-106-D-SP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
06 = 6 Independent Cams / Circuits / Switches  
D = Double Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial or Dial Window is to be provided 
3 Year Warranty 
(14LBS)
1980-106-L-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-106-L-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
1 = NEMA 1 Rated Enclosure 
06 = 6 Independent Cams / Circuits / Switches  
The micro-adjust cams maintain an accuracy and repeatability of 1/4 degree and can be adjusted by use of a tool supplied and mounted inside the enclosure or by hand 
L = Left Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed Switches which can be wired for either a Normally Open or a Normally Closed Circuit. 4 screw terminals per switch 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
3 Year Limited Warranty 
(14LBS)
1980-106-L-SP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-106-L-SP-TD2 
Series 1980 
1 = NEMA 1 Enclosure 
06 = 6 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw 
TD2 = Timing Dial Labeled for C.C.Wise Rotation 
3 year Warranty
Updated on September 2, 2008 8:22 AM
203 Vest Avenue
Valley Park, MO 63088
Toll Free: (888) SPECTECH
Phone: (636) 537-0202
Fax: (636) 537-1405
E:mail: sales@spectechind.com