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Gemco Parts Description Page 7

Part
Number
Product
Category
Description
1980-410-X-SP-TD2-S-35-L Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-410-X-SP-TD2-S-35-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
10 = 10 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 
TD2 = Timing Dial Labeled for Counter Clock Wise Rotation 
S= Straight Drive Gear Reducer 
35= 35 to 1 Gear Ratio 
L = Left End Shaft Location 
(24LBS)
1980-410-X-SP-X-S-100-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-410-X-SP-X-S-100-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
10 = 10 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 
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 
S = Straight Drive Gear Reducer 
100 = 100 to 1 Gear Ratio 
R = Right End Shaft Location
1980-411-R-SP-TD2 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-411-R-SP-TD2  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
11= 11 Independent Cams / Circuits / Switches 
R = Right Hand Shaft Extension from Enclosure  
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed. Switches can be wired to be a Normally Open or Normally Closed Circuit. 4 screw terminals per switch 
TD2 = Timing Dial Labeled for C.C.W. Counter Clock Wise Rotation but without timing dial window on the enclosure 
3 Year Warranty 
(36LBS)
1980-411-X-SP-X-M-4-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-411-X-SP-X-M-4-R 
Series 1980  
4 = NEMA 4 Enclosure 
11= 11 Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches, Single Pole Double Throw 
X = No Timing Dial 
M = Multiplier Drive 
4 = 4 to 1 Gear Multiplier 
R = Right End Shaft Location 
(43LBS)
1980-411-X-SP-X-S-4-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-411-X-SP-X-S-4-R 
Series 1980  
4 = NEMA 4 Enclosure 
11= 11 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 
4 = 4 to 1 Gear Ratio 
R = Right End Shaft Location
1980-412-D-SP-X Brake Parts
1980-412-X-SP-X-S-100-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-412-X-SP-X-S-100-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
12= 12 Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches / Single Pole Double Throw, Snap Action, U.L. Listed. Switches can be wired to be a Normally Open or Normally Closed Circuit. 4 screw terminals per switch 
X = No Timing Dial 
S = Straight Drive Gear Reducer 
100 = 100 to 1 Gear Ratio 
R = Right End Shaft Location 
41 LBS
1980-412-X-SP-X-S-36-L Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-412-X-SP-X-S-36-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Watertight Enclosure 
12 = 12 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 
S= Straight Drive Gear Reducer 
36 = 36 to 1 Gear Ratio 
L = Left End Shaft Location
1980-412-X-SP-X-S10-L Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-412-X-SP-X-S-10-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure, Watertight 
12 = 12 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 
S = Straight Drive Gear Reducer 
10 = 10 to 1 Gear Ratio 
L = Left End Shaft Location
1980-412-Y-SP-X-M-6-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-412-Y-SP-X-M-6-R 
Series 1980  
4 = NEMA 4 Enclosure 
12 = 12 Cams / Circuits / Switches 
Y = Shaft Extension oposite gearbox. (double) 
SP = SPDT Switches. Single Pole Double Throw 
X = No Timing Dial 
M = Mutiplier Drive  
6 = 1 to 6 Gear Multiplier Ratio 
R = Gear Multiplier, Right End Loc
1980-412-Y-SP-X-S-200-L Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-412-Y-SP-X-S-200-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
12 = 12 Independent Cams / Circuits / Switches 
Y = Shaft Extension Opposite the Gear Box / 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 
X = No Timing Dial 
S= Straight Drive Gear Reducer 
200 = 200 to 1 Gear Ratio 
L = Left End Gear Box & Shaft Location
1980-414-R-SP-R-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 980-414-R-SP-R-TD1 
Series 1980 
4 = NEMA 4 Rated Enclosure 
14 = 14 Cams / Circuits / Switches 
R = Right Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw 
R = Rubber Boot on Switch Plunger  
TD1 = Timing Dial C.W. Clock Wise Rotation 
R = Right Hand Shaft Extension
1980-415-X-SP-TD1-S-12-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-415-X-SP-TD1-S-12-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure 
15 = 15 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 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
TD1 = Timing Dial Labeled for C.W. Rotation 
S = Straight Drive Gear Reducer, shaft parallel with main shaft 
12 = 12 to 1 Gear Ratio, every 12 turns of the main shaft the cams turn once  
R = Right End Shaft Location
1980-416-L-SP-TD1-R-100-R1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-416-L-SP-TD1-R-100-R1 
Series 1980 
4 = NEMA 4 Enclosure 
16 = 16 Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw 
TD1 = Timing Dial C.W. Clock Wise Rotation 
R = Right Angle Gear Reducer 
100 = 100 to 1 Gear Reducer Ratio 
R-1 = Shaft Location on Gear Reducer
1980-416-L-SP-TW1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-416-L-SP-TW1 
Series 1980 
4 = NEMA 4 Enclosure 
16 = 16 Cams / Circuits / Switches 
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw 
TW1 = Timing Dial C.W. Clock Wise Rotation with a Timing Dial Window on the Enclosure
1980-416-L-SP-X Brake Parts Ametek Gemco Cam Limit Switch 
Switch Settings 4 to 356 Degrees without a Tool - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
Series 1980 Micro-Adjust Rotating Cam Limit Switch 
Model 1980-416-R-SP-X 
4 = NEMA 4 Enclosure 
16 = Qty. 16, 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  
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw with one NO and one NC contact per switch rated at 15 million cycles 
X = No Timing Dial or dial window is to be provided 
Warranty 3 years 
With NEMA 4X Stainless Adder & 2.5 Inch Shaft Extension without woodruff key and keyslot 
10% expedite fee for shipment within 2.5 week. Expedite fee will be dropped if factory does not ship in 2.5 weeks
1980-4160 Brake Parts Ametek Gemco Cam Box like 1980R-406-X-DP-X-R-3-L with 304 Stainless Steel Option. NEMA 4X, 6 Circuits, 3 to 1 Ratio, Includes Resolver EC70289 # SD0308910. Enclosure size is to be the same as original units. Bascular Span Drawbridge Long Island NY. 1980-4160 RAGR/SS EN
1980-4161 Brake Parts Ametek Gemco Cam Box like1980R-406-X-DP-X-R-3-R with 304 Stainless Steel Option. NEMA 4X, 6 Circuits, 3 to 1 Ratio, Includes Resolver EC70289 # SD0308910. Enclosure size is to be the same as original units. Bascular Span Drawbridge Long Island NY. 1980-4161 RAGR/SS EN
1980-4223 Brake Parts Ametek Gemco Rotating Cam Limit Specially Engineered Product 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
NEMA 4 Rated Watertight Enclosure 
8 Independent Cams / Circuits / Switches 
Left Hand Shaft Extension from enclosure  
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 
Timing Dial Labeled for Counter Clock Wise Rotation 
Multiplier Gear Drive with a Ratio of 1 to 4  
Encoder Provision, for a customer supplied encoder 
(40LBS) 7/7
1980-4245 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model  
Series 1980 Cam Box featuring cams with Adjustable Timing,Dwell & a Resolver 
12 = NEMA 12 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 
(19LBS) 11/7
1980-4310 Brake Parts Ametek Gemco Rotating Cam Limit Switch like 1980-402-R-DP-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4X Rated 304 Stainless Steel 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  
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 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial or Timing Dial Window is to be provided 1/7
1980-4325 Brake Parts Ametek Gemco Rotating Cam Limit Switch like Model 1980-406-R-SP-X  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 304 Stainless Steel Enclosure, cover, latches, bearing flanges & flange bolts. 3/4 Inch 316 Stainless Input Shaft. Meets a NEMA 4X Rating 
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 
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 
(24LBS)
1980-4375 Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-103-X-SP- - 64-L5 
Series 1980R with AMCI Style Resolver 
1 = NEMA 1 Enclosure 
03 = 3 Cams / Circuits / Switches 
SP = Single Pole Double Throw Switches 
64 = 64 to 1 Gear Reducer 
L5 = Input Shaft Location
1980-4376 Brake Parts Ametek Gemco Rotating Cam Limit Switch1980-12-06-L-SP 
Series 1980 
12 = NEMA 12 Enclosure 
06 = 6 Cams / Circuits / Switches 
SP = Single Pole Double Throw Switches 
L = Left Hand Shaft Extension 
With Pulse Generating Disc & Switch in Circuit # 8 
1980-4380 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-4380 NEMA 12 Enclosure, 6 Circuit / Cam, Right Hand Shaft Extension, SPDT Switches, with AMCI Resolver SD0495600
1980-4382 Brake Parts Ametek Gemco 1980 Series Rotating Cam Limit Switch. Similar to part # 1980-407-R-DP-X EXCEPT with a 316 Stainless Steel Shaft cam / main shaft along with a stainless steel drain / breather for the enclosure. NEMA 4 Enclosure, 7 Circuits / Cams, D.P.D.T. Snap Action Switches for all circuits, Right End Shaft Extension.
1980-4386 Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980-4386 
Series 1980R, Standard Resolver Output Compatible with all Gemco Electronic Modules. Resolver # 04535001 
4 = NEMA 4X Rated Stainless Steel Enclosure, 304 Stainless Steel enclosure option that includes:  
316 SS Camshaft, 304 SS Enclosure, Cover, Latches, Bearing Flanges and Flange Bolts  
8 = 8 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite 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 or Timing Dial Window is to be provided 
S = Straight Drive Extension from Gear Reducer 
35 = 35 to 1 Gear Ratio 
R = Right, Gear Reducer is on the Right Side of the cam box 
(44LBS)
1980-4387 Brake Parts Ametek Gemco Rotating Cam Limit Switch Like Model 1980-404-R-SP-TD2  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Stainless Steel Enclosure 
04 = 4 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 
TD2 = Timing Dial labeled for Counter Clock Wise Rotation 
Special: 304 stainless steel enclosure & 316 Stainless Steel Shaft 
The enclosure is a 5-6 circuit size due to TD2 Timing dial Option
1980-4388 Brake Parts Ametek Gemco Rotating Cam Limit Switch Like Model 1980-404-L-SP-TD1  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Stainless Steel Enclosure 
04 = 4 Cams / Circuits / Switches 
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 
TD1 = Timing Dial labeled for Clockwise Rotation 
Special: 304 Stainless Steel Enclosure & 316 Stainless Steel Shaft 
The enclosure size is a 5 - 6 circuit size due to the TD1 timing dial option
1980-4390 Brake Parts Ametek Gemco Rotating Cam Limit Switch Like Model 1980-407-R-SP-TD2  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Stainless Steel Enclosure 
07 = 7 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 
TD2 = Timing Dial Labeled for Counter Clock Wise Rotation 
Special: 304 Stainless Steel Enclosure & 316 Stainless Steel Shaft 
The enclosure size is a 7 - 8 circuit size
1980-4430 Brake Parts Ametek Gemco Rotating Cam Limit Switch. Like Model 1980-404-X-SP-X-S-28-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure with the 304 Stainless Steel Enclosure option that includes:  
316 SS Camshaft, 304 SS Enclosure, Cover, Latches, Bearing Flanges and Flange Bolts  
04 = 4 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 
S = Straight Drive Gear Reducer 
28 = 28 to 1 Gear Ratio 
R = Right End Shaft Location 
Morris Material Handling Originally
1980-4447 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-4447 
NEMA 4 
7 Circuit / Cam / Switch 
Double Pole Double Throw Switches 
With Resolver 
With Stainless Steel Drain / Breather 
1980-4451 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model Like 1980-1204-D-SPG-R-X 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
12 = NEMA 12 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 Shaft Extensions from Enclosure, 2  
SPG = 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  
R = Rubber Boots on the Switch Plunger for additional protection from Moisture & Dust 
X = No Timing Dial or Dial Window is to be provided 
(19LBS) 1/8
1980-4455 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-104-L-SP-TD2 
Series 1980 
1 = NEMA 1 Enclosure 
8 = 8 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 
With 1 Special 30 Degree Cam Circuit.
1980-4469 Brake Parts Ametek Gemco Engineered Product.Similar to part number 1980-408-X-DP-TDI-R-1-L1 except with provisions to mount and couple a customer supplied Dynapar Encoder. Series A5840960010 
304 stainless steel enclosure, cover, latches, internal camshaft, bearing flanges & flange bolts 
Gear Reducer is NEMA 4, (stainless is not available) 
1980-4478 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-406-X-DP-X-M-3-R 
Series 1980 Vertex S827-6800-30 
4 = NEMA 4 Enclosure 
6 = 6 Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
DP = DPDT Switches, Double Pole Double Throw 
X = No Timing Dial 
M= Multiplier Drive 
3 = 1 to 3 Multiplier Ratio 
R = Right End Shaft Location 
1980-4478
1980-4484 Brake Parts Ametek Gemco Cam Limit Switch 
Switch Settings 4 to 356 Degrees without a Tool - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
Series 1980 Micro-Adjust Rotating Cam Limit Switch 
Model 1980-416-R-SP-X 
4 = NEMA 4 Enclosure 
16 = Qty. 16, 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  
L = Left Hand Shaft Extension from enclosure  
SP = SPDT Switches / Single Pole Double Throw with one NO and one NC contact per switch rated at 15 million cycles 
X = No Timing Dial or dial window is to be provided 
Warranty 3 years 
With NEMA 4X Stainless Adder & 2.5 Inch Shaft Extension without woodruff key and keyslot 
1980-4500 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) 
With a special main shaft diameter, keyway & length. Ametek Gemco will assign an engineered part number once the order is acknowledged by engineering. Shaft diameter as it extends from the cam box, 18mm. Shaft keyway 6X3mm, Shaft length from mounting foot center line to end 86mm
1980-4501 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) 
With a special main shaft diameter, keyway & length. Ametek Gemco will assign an engineered part number once the order is acknowledged by engineering. Shaft diameter as it extends from the cam box, 18mm. Shaft keyway 6X3mm, Shaft length from mounting foot center line to end 86mm In error provided DPDT switches, change engr # for SPDT switches
1980-4504 Brake Parts Ametek Gemco Engineered Product. Same as part number 1980-4469 with the exception of the removal of the gear reducer. Mount and couple the customer supplied encoder. The encoder is to be a Dynapar Series A125-0012-1-C-320 
304 Stainless Steel Enclosure, cover, latches, bearing flanges & flange bolts. 3/4 Inch 316 Stainless Input Shaft. Meets a NEMA 4X Rating 406 
17 to 20 Circuit Size Enclosure Dim 
Also similar to a 1980-408-L-DP-TD1 
(57LBS) 40 X 14 X 7 Box
1980-4510 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model, similar to 1980-407-X-SP-R-S-100-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Enclosure. 316 Stainless Steel Enclosure, cover & latches. 304 SS for Bearing Flanges & Flange Bolts. 3/4 Inch 316 Stainless Input Shaft. Meets a NEMA 4X Rating 
07 = 7 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 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 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
R = Rubber Boot option on Switch Plunger for additional moisture protection 
X = No Timing Dial is to be provided  
S = Straight Drive Gear Reducer 
100 = 100 to 1 Gear Ratio 
L = Left End Gear Reducer / Main Shaft 
(34LBS)
1980-4514 Brake Parts Ametek Gemco Specially Engineered Product. Similar to part number 1980-916-Y-DP-X-S-8-R with enclosure heater and thermostat  
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
9 = NEMA 9 Rated Enclosure 
16 = 16 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 
Y = Double Shaft Extension from Enclosure, Two  
DP = DPDT Switches / Single 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 
X = No Timing Dial is to be supplied 
S = Straight Drive Gear Reducer 
8 = 8 to 1 Gear Ratio 
R- Gear Box mounted on the Right Side 
(85LBS)
1980-4515 Brake Parts Gemco Rotating Cam Limit Switch Model like 1980-406-X-SP-X-SX-30-L 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 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 
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 
Switch Settings 4 to 356 Degrees - Gemco Manufactured Precision Snap Switches - UL Listed Assembly File E56660  
X = No Timing Dial 
SX= Straight Drive Gear Reducer with a 1/2 Inch Diameter 316 Stainless Steel Shaft 
30 = 30 to 1 Gear Ratio 
L = Left End Shaft Location
1980-4522 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model like a 1980-406-SP-R-X-TD2-R-20-L but with a 316 Stainless Steel Main Shaft 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
4 = NEMA 4 Rated Watertight 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 
X = No Shaft Extension opposite the gearbox  
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 option on Switch Plunger for additional moisture protection 
TD2 = Timing Dial Labeled for Counter Clock Wise Rotation 
R - Right Angle Gear Reducer with a 316 Stainless Steel Shaft 
20 = 20 to 1 Gear Ratio  
L = Gear Box is located on the Left Side 
(30LBS)
1980-4540 Brake Parts Ametek Gemco Rotating Cam Limit Switch  
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 = Double Shaft Extension from Enclosure, Two, Right & Left  
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 
3 Year Limited Warranty 
(12LBS) 11/7
1980-4541 Brake Parts Ametek Gemco Rotating Cam Limit Switch like Model 1980-104-L-GSPR-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)
1980-4542 Brake Parts Ametek Gemco Rotating Cam Limit Switch like Model 1980-103-L-GSPR-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  
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 (11LBS)
1980-704-X-SP-X-M-3-L Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-704-X-SP-X-M-3-L 
Series 1980  
7 = NEMA 7 Enclosure 
04= 4 Independent Cams / Circuits / Switches 
X = No Shaft Extension Opposite the Gear Box 
SP = SPDT Switches, Single Pole Double Throw 
X = No Timing Dial 
M = Multiplier Drive 
3 = 3 to 1 Gear Multiplier 
L = Left End Shaft Location
1980-705-X-SP-X-S-48-R Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-705-X-SP-X-S-48-R 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
7 = NEMA 7 Rated Enclosure 
07 = 7 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 
S= Straight Drive Gear Reducer 
48 = 48 to 1 Gear Ratio 
R = Right End Gear Reducer
1980-912-R-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch Model 1980-912-R-SP-TD1 
Series 1980 Cam Box featuring cams with Adjustable Timing & Dwell 
9 = NEMA 9 Rated Enclosure 
12 = 12 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
1980-XXXX Brake Parts Ametek Gemco Engineered Product. Part number to be assigned at time of order. Similar to part number 1980-408-X-DP-TDI-R-1-L1 except with provisions to mount and couple a customer supplied encoder. The encoder is to be a Dynapar Series A5840960010 
Options at additional cost and not included in the price include: 
Thermostatically controlled enclosure heater, add $ 222.00 
304 stainless steel enclosure, cover, latches, internal camshaft, bearing flanges & flange bolts, add $ 475.00 
1980R-103-X-DP-R-X-5-L7 Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-103-X-DP-R-X-5-L7 
Series 1980R, Standard Resolver Output Compatible with all Gemco Electronic Modules. Resolver # 04535001 
1 = NEMA 1 Enclosure 
3 = 3 Cams / Circuits / Switches 
X = No Shaft Extension Opposite Gear Box 
DP = Double Pole Double Throw Switches 
X = No Timing Dial or Timing Dial Window is to be provided 
R = Right Angle Gear Reducer 
5 = 5 to 1 Gear Ratio 
L7 = Left End Shaft Location, Position 7
1980R-104-L-2-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-104-L-2-SP-TD1 
Series 1980R Cam Box featuring cams with Adjustable Timing & Dwell with Resolver Output 
1 = NEMA 1 Rated Enclosure 
04 = 4 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension 
2 = Standard Output Compatible with AMCI resolver input devices. Resolver # 04535076 
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 C.W. Rotation 
(20LBS)
1980R-104-L-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-104-L-SP-X 
Series 1980R, Standard Resolver Output Compatible with all Gemco Electronic Modules. Resolver # 04535001 
1 = NEMA 1 Enclosure 
04 = 4 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension 
SP = Single Pole Double Throw Switches 
X = No Timing Dial or Timing Dial Window is to be provided
1980R-104-R-2-SP-TD1 Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-104-R-2-SP-TD1 
1980R= Series 1980 with Resolver Output  
1 = NEMA 1 Enclosure 
4 = 4 Cams / Circuits / Switches 
R = Right Hand Shaft Extension 
2 = Standard Output Compatible with AMCI resolver input devices. Resolver # 04535076 
SP = Single Pole Double Throw Switches 
TD1 = Timing Dial for C.W. Rotation 
(20LBS)
1980R-1203-L-2-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-104-L-2-SP-TD1 
Series 1980R Cam Box featuring cams with Adjustable Timing & Dwell with Resolver Output 
1 = NEMA 1 Rated Enclosure 
03 = 3 Independent Cams / Circuits / Switches 
L = Left Hand Shaft Extension 
2 = Standard Output Compatible with AMCI resolver input devices. Resolver # 04535076 
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 
(20LBS)
1980R-1212-R-SP-X Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-1212-R-SP-X 
Series 1980R, Standard Resolver Output Compatible with all Gemco Electronic Modules. Resolver # 04535001 
12 = NEMA 12 Enclosure 
12 = 12 Independent Cams / Circuits / Switches 
R = Right Hand Shaft Extension 
SP = Single Pole Double Throw Switches 
X = No Timing Dial or Timing Dial Window is to be provided
1980R-416-R-DP-R-X Brake Parts Ametek Gemco Rotating Cam Limit Switch with Resolver Model 1980R-416-R-DP-R-X 
1980R= Series 1980 with Resolver Output  
4 = NEMA 4 Enclosure 
16 = 16 Cams / Circuits / Switches 
R = Right Hand Shaft Extension 
DP = Double Pole Double Throw Switches 
R = Rubber Boot on Switch Plunger Option 
X = No Timing Dial  
1983 Brake Parts Ametek Gemco
1983-1202-R-HI-A-X Brake Parts Ametek Gemco Optical Coupler Rotating Cam Limit Switch model 1983-1202-R-HI-A-X 
Series 1983 
12 = NEMA 12 Enclosure 
02 = 2 Circuits / Cam / Switches 
R = Right Hand Shaft Extension 
HI = High Power Optical Switch with plug in socket for either AC or DC Opto 22 solid state relays 
A = OAC Output with AC Output 120 Volt AC at 3 AMPS RMS 
X = No Timing Dial is to be supplied
1983-1202-R-L1-X Brake Parts Ametek Gemco Optical Coupler Rotating Cam Limit Switch model 1983-1202-R-L1-X 
Series 1983 
12 = NEMA 12 Enclosure 
02 = 2 Circuits / Cam / Switches 
R = Right Hand Shaft Extension 
L1 = Low Power Optical Switch 3 to 30 VDC with Optically Isolated Outputs 100mA Max. No output relays are provided 
X = No Timing Dial is to be supplied
1983-1204-R-HI-D-X Brake Parts Ametek Gemco Optical Coupler Rotating Cam Limit Switch model 1983-1204-R-HI-D-X 
Series 1983 
12 = NEMA 12 Enclosure 
04 = 4 Circuits / Cam / Switches 
R = Right Hand Shaft Extension 
HI = High Power Optical Switch with plug in socket for either AC or DC Opto 22 solid state relays 
D = ODC Output with DC output 0 - 60 Volt DC at 3 Amps RMS 
X = No Timing Dial is to be supplied
1983-1456 Brake Parts Ametek Gemco Optical Coupler Rotating Cam Limit Switch model 1983-1456 
Series 1983 
12 = NEMA 12 Enclosure 
4 Low Power Optical Switches SD0310700 
4 Hi Power Optical Switches SD0312400 
Right Hand Shaft Extension 8/7
1986-1536 Brake Parts Ametek Gemco Resolver Series 1986 Same as 1986B-1-X-R-X 
B = 2.25 Inch Square Flange Mount with a 3/8 Inch Diameter Input Shaft  
1 = Standard Output Compatible with all Gemco Electronic Modules  
X = Single Turn Resolver. No Gear Reducer 
R = Standard Rear Mount Connector  
X = No Options 
1/7
Updated on February 26, 2016 1:44 PM
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Valley Park, MO 63088
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Phone: (636) 537-0202
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