back to Gemco Rotating Cam Limit Switches
worm gear type
Application
Gemco's Rotary Limit Switches are primarily used for machine tools, handling devices, and rotary operators where motion is expressed in shaft rotation. The primary purpose of the switch is to control the intermediate or end limits of a linear or rotary motion. The switch is often used as a safety device to protect against accidental damage to equipment.
Description
Quality parts make each Rotary Limit Switch highly dependable.
• The 1/2" input shaft (includes Woodruff Key) drives a bronze gear which rotates the cam block. The cam block houses independently adjustable cams that actuate the precision type snap action switches.
• Each switch can be provided with one to four single pole, double throw switches or a maximum of two double pole, double throw switches for versatility of control circuits.
• No minimum speed is specified because snap action contacts are used. Maximum rated speed of the worm shaft is 1000 RPM and can be rotated clockwise or counterclockwise.
• Gemco's Rotary Limit Switch offers the broadest range of standard gear selections of any switch available. Standard ratios range from 5:1 through
5333.3:1.
• Max. Operating Temperature 180°F
Enclosures
NEMA Type 1 and 12 (General Purpose) enclosures are molded from FIBRALLOY® a special fiber glass material that is resistant to acids, alcohols, hydro carbons and heat. A tight fitting synthetic gasket prevents the entrance of oil and coolants. External mounting holes enable switch mounting without internal interference. (See Figures 1 and 2.)
NEMA Type 4 (Watertight) enclosures are made of cast aluminum; cast iron or cast bronze enclosures can be provided upon request.
NEMA Type 7 & 9 (Hazardous Location) enclosures are designed to meet the requirements of the National Electrical Code for Class 1, Group D, and Class 2. Groups E, F & G. The enclosures are made of cast aluminum; cast iron or bronze enclosures can be provided upon request. (See Figure 3.) |
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| Rotary Limit Switches |
| check these advantages.... worm gear type |
|
The GEMCO Rotary Limit Switch
- reduces hazards to inexperienced users.
- removes danger of terminal shorting from
water, corrosion, or accidental shorting
from other metal objects because of its
insulating properties.
- enclosures are made of FIBRALLOY® --
an electrical insulator.
|
|
The GEMCO Rotary Limit Switch.
- reduces design time.
- reduces machine work on special cams and gears for different operating ratios.
- cams are all standard regardless of ratios.
- offers special cams upon request.
|
|
|
The GEMCO Rotary Limit Switch.
- often pays for itself by eliminating cost of stampings and machined bushings in linkages.
- reduces assembly time.
|
Mounting
The switch may be mounted in any convenient position. An "L" shaped mounting bracket which permits innumerable mounting positions for all enclosures, can be supplied upon request.
|
Adjustment
- Front cam "A"actuates switch "F"; rear cam "0" actuates switch "E".
- Both switches "E" and "F" have independent adjustable cams.
- To adjust cam "A" loosen Allen Screw "B".
- To adjust cam "0" loosen Allen Screw "C".
|
When the cam rotates, the switches "E" and "F" are actuated and the contacts change from the normally closed to open position and normally open to the closed position.
 |
worm gear type
.....plus a broad range of application
|
 |
 |
 |
 mechanical presses
Both die and press, worth thousands the cost of the Gemco Rotary Limit Switch, are safely protected when the connecting rod length is adjusted. |
door operators
The Gemco Rotary Limit Switch is mounted on the drive unit, with gear take-off from the main drive shaft. Much wiring is eliminated. Cam accuracy maintains door closing to practical limits. |
hoists
Gemco switches on this line of hoists protect power unit from damage by controlling critical upper and lower limit. |
|
 |
 |
 |
 |
loaders
You can control travel of pushers, grabs, and other reciprocating parts handlers directly from drive shafts. |
valves
One or more open and close limits on pipe line, pumping station and machinery valves are accurately controlled with Gemco Rotary Limit Switches. |
handling fixtures
Assures accurate movement and placement of parts, plus control of mechanical clamping in welding, induction heating or machining fixtures. |
windows
Gemco Rotary Limit Switches are used for window operators in skylights and monitors, for central station control. |
|
motor operated valves
packaging machinery
tapping heads
elevating mechanisms |
pipe threading machines
index tables
transformer tap changers
conveyors |
Max Speed -- 1000 RPM worm gear type
|
 |
Input
Shaft Rev. |
Cam
Block Rev. |
NEMA 1* & 12 Encl. |
NEMA 4 Encl. (1) |
NEMA 7 Encl. (1) |
Input Shaft Turns**** |
| |
|
Catalog No. |
Catalog No. |
Catalog No. |
Max. Setting |
Reset |
5
10
20 |
1 |
2000-1B
2000-38B
2000-2B |
2000-9B
2000-39B
2000-10B |
2000-17B
2000-40B
2000-18B |
4 1/2
9 1/4
18 |
116
18
1/8 |
30
40
50 |
1 |
2000-3B
2000-4B
2000-5B |
2000-11B
2000-12B
2000-13B |
2000-198
2000-20B
2000-21B |
28
37
46 |
1/4
1/4
1/4 |
60
80
100 |
1 |
2000-6B
2000-7B
2000-8B |
2000-14B
2000-15B
2000-16B |
2000-22B
2000-23B
2000-24B |
58
77
94 |
1 1/2
3/4
3/4 |
150
250
300 |
1 |
2000-129B
2000-28B
2000-130B |
2000-132B
2000-31B
2000-133B |
2000-135B
2000-34B
2000-136B |
135
230
265 |
4
6
6 1/2 |
500
600
1000 |
1 |
2000-29B
2000-131B
2000-30B |
2000-32B
2000-134B
2000-33B |
2000-35B
2000-143B
2000-36B |
460
555
920 |
15 1/4
16
29 |
2000
4000
5333.3 |
1 |
2000-292B
2000-279B
2000-281B |
2000-299B
2000-127B
2000-157B |
2000-291 B
2000-128B
2000-158B |
Consult
Factory |
|
 |
Input
Shaft Rev. |
Cam
Block Rev. |
NEMA 1* & 12 Encl. |
NEMA 4 Encl. (1) |
NEMA 7 Encl. (1) |
Input Shaft Turns**** |
| |
|
Catalog No. |
Catalog No. |
Catalog No. |
Max. Setting |
Reset |
5
10
20 |
1 |
2000-137B
2000-138B
2000-25B |
2000-145B
2000-146B
2000-147B |
2000-159B
2000-160B
2000-161B |
4 3/4
9 1/4
19 |
1/8
1/4
1/2 |
30
40
50 |
1 |
2000-47B
2000-139B
2000-73B |
2000-148B
2000-149B
2000-1508 |
2000-60B
2000-1628
2000-163B |
28 1/2
37 3/4
46 3/4 |
1/2
3/4
3/4 |
60
80
100 |
1 |
2000-75B
2000-77B
2000-43B |
2000-151B
2000-152B
2000-153B |
2000-164B
2000-165B
2000-166B |
58
75
95 |
1 1/2
1 3/4
2 |
150
250
300 |
1 |
2000-1130B
2000-140B
2000-1133B |
2000-1131B
2000-154B
2000-1134B |
2000-1132B
2000-167B
2000-1135B |
135
237
265 |
4
6
61 1/2 |
500
600
1000 |
1 |
2000-141B
2000-1136B
2000-142B |
2000-155B
2000-1137B
2000-156B |
2000-168B
2000-1138B
2000-169B |
460
555
920 |
15 1/4
16
29 |
2000
4000
5333.3 |
1 |
2000-1139B
2000-1142B
2000-1145B |
2000-1140B
2000-1143B
2000-1146B |
2000-1141B
2000-1144B
2000-1147B |
Consult
Factory |
 |
Input
Shaft Rev. |
Cam
Block Rev. |
NEMA 1* & 12 Encl. |
NEMA 4 Encl. (1) |
NEMA 7 Encl. (1) |
Input Shaft Turns**** |
| |
|
Catalog No. |
Catalog No. |
Catalog No. |
Max. Setting |
Reset |
5
10
20 |
1 |
2000-174B
2000-175B
2000-176B |
2000-188B
2000-189B
2000-190B |
2000-263B
2000-264B
2000-265B |
4 3/4
9 1/2
19 1/4 |
1/16
1/16
1/8 |
30
40
50
|
1 |
2000-177B
2000-178B
2000-179B |
2000-191B
2000-192B
2000-193B |
2000-266B
2000-267B
2000-268B |
28 1/2
38
47 |
1/4
1/2
1/2 |
60
80
100 |
1 |
2000-180B
2000-181B
200O-182B |
2000-194B
2000-195B
2000-196B |
2000-269B
2000-270B
2000-271B |
57 1/2
76 3/4
96 1/4 |
1/2
1/2
1 1/2 |
150
250
300 |
1 |
2000-170B
2000-183B
2000-187B |
2000-171B
2000-197B
2000-300B |
2000-186B
2000-272B
2000-301B |
135
234
265 |
4
2
6 1/2 |
500
600
1000 |
1 |
2000-184B
2000-1100B
2000-185B |
2000-198B
2000-1101B
2000-199B |
2000-273B
2000-1102B
2000-274B |
460
555
920 |
7
16
10 |
2000
4000
5333.3 |
1 |
2000-1103B
2000-1106B
2000-1109B |
2000-1104B
2000-1107B
2000-1110B |
2000-1105B
2000-1108B
2000-1111B |
Consult Factory |
 |
Input
Shaft Rev. |
Cam
Block Rev. |
NEMA 1* & 12 Encl. |
NEMA 4 Encl. (1) |
NEMA 7 Encl. (1) |
Input Shaft Turns**** |
| |
|
Catalog No. |
Catalog No. |
Catalog No. |
Max. Setting |
Reset |
5
10
20 |
1 |
2000-89B
2000-90B
2000-91B |
2000-101B
2000-102B
2000-103B |
2000-113B
2000-114B
2000-115B |
4 3/4
9 1/2
19 1/4 |
1/16
1/16
1/8 |
30
40
50
|
1 |
2000-92B
2000-93B
2000-94B |
2000-104B
2000-105B
2000-106B |
2000-116B
2000-117B
2000-118B |
28 1/2
36
47 |
1
1/2
1/2 |
60
80
100 |
1 |
2000-95B
2000-96B
2000-97B |
2000-107B
2000-1088
2000-109B |
2000-119B
2000-120B
2000-121B |
57 1/2
76 3/4
96 1/4 |
1/2
1/2
1 1/2 |
150
250
300 |
1 |
2000-1112B
2000-98B
2000-1115B |
2000-1113B
2000-110B
2000-1116B |
2000-1114B
2000-122B
2000-1117B |
135
234
265 |
4
2
6 1/2 |
500
600
1000 |
1 |
2000-99B
2000-1118B
2000-100B |
2000-111B
2000-1119B
2000-112B |
2000-123B
2000-1120B
2000-124B |
460
555
920 |
7
16
10 |
2000
4000
5333.3 |
1 |
2000-1121B
2000-1124B
2000-1127B |
2000-1122B
2000-1125B
2000-1128B |
2000-1123B
2000-1126B
2000-1129B |
Consult Factory |
* Switch capacities:
125V. - 15 amps. AC., 1/2 amp. D.C.
15 amps. AC.. 1/4 amp. D.C.
460V. 15 amps. AC.
** Switch capacities:
125 or 250V. AC. - 10 amps.
125V. D.C. - 1/2 amp.
250V. D.C. - 1/4 amp.
*** Switch capacities:
Mechanical rating - 20 million cycles
Electrical rating:
125V. AC. - 10 amps. resistive load.
250V. AC. - 10 amps. resistive load
30V. D.C. - 7 amps. inductive load
****Figures are based on a switch using a standard 25' cam: maximum setting between limits.
(1) - For Cast Iron or Bronze Enclosure Contact Factory.
Special Cams*
Cam **
Part No. |
Period for which switch contacts are opened or closed |
S-55-A Standard
S-68-A Special
S-84-A Special
S-69-A Special
S-85-A Special
S-86-A Special
S-87-A Special
S-70-A Special
S-71-A Special
S-127-A Special |
25º or 335º
540º or 306º
75º or 285º
90º or 270º
105º or 255º
135º or 225º
150º or 210º
180º
240º or 120º
360º Blank Cam |
*Special cams not listed, can be furnished on special order. When ordering, please specify cam angle. |
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|
Application:
Ruggedly built, GEMCO'S heavy duty Rotary Limit Switches have gained wide acceptance on installations such as mechanical press ram adjustments, press extractors and shuttles which require dependable trouble free performance. These installations require a limit switch that will withstand rapid starting and stopping, shock, vibration and still successfully control the end or intermediate limits of such devices. Because of these demands and the high reliability required, GEMCO's heavy-duty Rotary Limit Switch far exceeds any on the market. |
Cams
The input shaft (includes Woodruff Key) drives a bronze gear which rotates the cam block. The cam block houses independently adjustable cams that actuate the precision type snap action switches.
Input Speed
Maximum rated speed of the input Input Speed shaft is 1800 RPM; can be rotated clockwise or counterclockwise. |
|
Two Circuit S.P.D.T. - Symbol A*
 |
Two Circuit D.P.D.T. - Symbol B*
 |
Two Circuit S.P.D.T. - Symbol C*
 |
Two Circuit S.P.D.T. - Symbol C*
 |
Dwg.
No. D-96-C |
Reduction Ratios |
Catalog No. |
Catalog No. |
Catalog No. |
Catalog No. |
5:1
7.5:1
10:1
15:1
20:1
30:1 |
2000-2000
2000-2001
2000-2002
2000-2003
2000-2004
2000-2005
|
2000-2006
2000-2007
2000-2008
2000-2009
2000-2010
2000-2011 |
2000-2012
2000-2013
2000-2014
2000-2015
2000-2016
2000-2017 |
2000-2018
2000-2019
2000-2020
2000-2021
2000-2022
2000-2023 |
Dwg.
No. D-85-C |
125:1
156.25:1
187.5:1
250:1
312.5: 1
375:1
500:1
625:1
750:1
1000:1
1250:1
1500:1
2000:1
2500:1
3000:1 |
2000-2024
2000-2025
2000-2026
2000-2027
2000-2028
2000-2029
2000-2030
2000-2031
2000-2032
2000-2033
2000-2034
2000-2035
2000-2036
2000-2037
2000-2038 |
2000-2039
2000-2040
2000-2041
2000-2042
2000-2043
2000-2044
2000-2045
2000-2046
2000-2047
2000-2048
2000-2049
2000-2050
2000-2051
2000-2052
2000-2053
|
2000-2054
2000-2055
2000-2056
2000-2057
2000-2058
2000-2059
2000-2060
2000-2061
2000-2062
2000-2063
2000-2064
2000-2065
2000-2066
2000-2067
2000-2068 |
2000-2069
2000-2070
2000-2071
2000-2072
2000-2073
2000-2074
2000-2075
2000-2076
2000-2077
2000-2078
2000-2079
2000-2080
2000-2081
2000-2082
2000-2083 |
* For switch capacities, see page 13
For Cast Iron or Bronze Enclosure Contact Factory. |
|
Heavy-Duty Dimensions 
|
General Purpose Rotary Limit Switches
|
|
Featuring:
- S.P.D.T. or D.P.D.T. Industrial Duty Switches With Isolated Contacts
- Ease of Wiring With Direct Access To All Switch Terminals
- Gear Ratios From 5:1 to 1080:1
- Positive, Independent Cam Settings
- Rugged Duty Die Cast Enclosures
- Large Cover Openings For Ease of Wiring
- NEMA 4 & 5 Oiltight - Watertight - Dusttight
|
|
|
|
"L" SHAPE BRACKET
| When "L" Shape Bracket is purchased, use |
| CATALOG NUMBER |
|
| C-6131-B (2 circuit unit) |
|
| C-6132-B (4 circuit unit) |
| Circuits |
Dimensions in inches |
Lbs.
Boxed |
| A |
B |
C |
D |
E |
| 2 Circuit Enclosure |
4 7/8 |
4 1/2 |
2 5/8 |
4 3/8 |
5 1/4 |
3 |
| 4 Circuit Enclosure |
6 7/8 |
 5 |
3 3/8 |
6 3/8 |
5 7/32 |
4 1/2 |
Includes half inch hub extension. |
Approximate Dimentions And Shipping Weights For 2 and 4 Circuit Units
Left Hand Extension Shown
("L" shape mounting bracket, when purchased separately, is shown in some of the possible mounting positions by broken lines.) |
 |
 |
ELECTRICAL CONTACT RATINGS
|
Switch
Type
|
Contacts
|
Volts
|
AC
|
Volts
|
DC
|
|
Inductive Pilot Duty 35% Power Factor
|
Resistive 75% Power Factor
|
Inductive Pilot Duty
and Resistive
|
|
Make
|
Break
|
Continuos Carrying Amps
|
Make, Break and Continuous Carrying Amps
|
Make and Break Amperes
|
Continuous Carrying Amps
|
|
Amps
|
VA
|
Amps
|
VA
|
Double Throw
|
|
1950-1-B-A-D0
|
SPDT
|
110
|
40
|
….
|
15
|
….
|
15
|
15
|
115
|
0.25
|
15
|
|
220
|
20
|
….
|
10
|
….
|
15
|
15
|
230
|
0.1
|
15
|
|
440
|
10
|
….
|
6
|
….
|
15
|
15
|
600
|
….
|
15
|
|
600
|
8
|
….
|
5
|
….
|
15
|
15
|
….
|
….
|
….
|
|
1950-4-B-A-D0
|
DPDT
|
115
|
30
|
3450
|
3
|
345
|
10
|
10
|
115
|
0.2
|
10
|
|
230
|
15
|
3450
|
1.5
|
345
|
10
|
10
|
230
|
0.1
|
10
|
|
440
|
7.5
|
3450
|
0.75
|
345
|
10
|
10
|
600
|
….
|
10
|
|
575
|
6
|
3450
|
0.6
|
345
|
10
|
10
|
….
|
….
|
….
|
NOTE: The maximum period for which the switch contacts are opened or closed during one revolution (360°) of the cam block assembly is 25° or 335°. Multiply the Rotary Limit Switch gear ratio times 25° or 335° to obtain the input shaft rotation which will yield 25° or 335° of cam block rotation. |
APPLICATION:
The Type K Rotary Limit Switch is used in applications requiring ratios from 5:1 to 1080:1 for controlling the end and/or intermediate limits of a reciprocating or rotary motion. Two circuit and four circuit assemblies are available from stock.
The NEMA 4 & 5 enclosure provides a clean environ-mental condition for the industrial duty snap action switches. Where motion can be expressed in shaft rotation either through a roller chain, gear train or direct coupling, the Type K Rotary Limit Switch makes it possible to open or close up to four independent circuits at the desired angular positions. |
DESCRIPTION:
Precision rugged duty snap action switches, combined with a wide selection of gear ratios provides reliable electrical signals as a function of the shaft rotation. No minimum speed is specified due to the snap action contacts of the switch. The cam settings and the switch wiring can be easily accomplished through the full size cover.
With the two circuit assembly, either a left hand or right hand shaft extension can be supplied. This pro-vides the added versatility when packaging this assembly in hard-to-get-at locations. |
|
|
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TYPICAL APPLICATIONS ARE:
- Door Operators
- Hoists
- Valves
- Elevating Jack Mechanisms
- Tapping Heads
- Packaging
- Machinery
|
- Index Tables
- Material Handling Equipment
- Reciprocating Linear Actuators
- Dampers
- End Limits on Machine Tool Lead Screws
- Shuttles
- Conveyors
|
|
Industrial Duty Switches
With Isolated Contacts
 |
Contact positions shown are when cams ARE NOT actuating levers.
DESCRIPTION
This rotary limit switch is designed to control the limits of travel of rotating reversing equipment. The limit switch input shaft is connected to a worm gear. Adjustable self lubricating nylon roller cams are concentrically mounted to the worm gear. These adjustable cams actuate the precision limit switches by utilizing a lever assembly.
INSTALLATION
This limit switch may be mounted in any convenient position. when installed this limit switch will provide long life with a minimum amount of service maintenance.
The following recommendations will prove helpful.
- Install the limit switch so that the shaft load will not exceed (5) live pounds.
- A flexible coupling is recommended for all installation other than gear drive application.
- Coupling should be employed in a manner that results in a minimum of thrust loading on the shaft. If switches are mounted with the shaft up or down, some additional thrust loading resulting from the weight of the shaft plus a very light coupling is permissible.
- Whenever possible, a separate support bearing for the drive sprocket should be used.
- Permissible speed of the input shaft 2000 R.P.M.
LUBRICATION
This limit switch was lubricated at the factory and should not require lubrication for the life of the switch.
ADJUSTMENT
Refer to figure 1. The electrical switch units “G” and “H” are shown with the contact positions assumed when the cams are not actuating the switch units.
When the cam rotates and actuates the switch, the “B” (closed) contact opens and the “A” (open) contact closes. Each precision switch has (1) one independent adjustable cam.
|
| Nominal Input Shaft to Cam Ratio |
Turns of Input Shaft
|
|
Maximum
|
Minimum
|
Over Travel
|
To Reset
|
|
5:1
10:1
20:1
30:1
40:1
60:1
80:1
120:1
|
4
8-1/2
17
26
35
53
72
108
|
1/8
1/4
1/2
1
1
2
2-1/2
3
|
1/8
1/4
1/2
3/4
1
2
2-1/2
3
|
1/16
1/8
1/4
3/8
1/2
3/4
1
1-1/2
|
RENEWAL PARTS
When ordering Renewal Parts give this form No. PF-047, Item No., Description, Part No., Quantity, and the Complete Unit Number stamped on the label. Reference FIG. #1 and FIG. #2 above.
| ITEM |
DESCRIPTION |
PART NUMBER |
QTY. |
1
2
3
4
5
6
7
8
9
10
11
12
13
14 |
Case and Shaft assembly
5:1 Ratio
10:1 Ratio
20:1 Ratio
30:1 Ratio
40:1 Ratio
60:1 Ratio
80:1 Ratio
120:1 Ratio
Cam block & Worm Gear assy.
5:1 Ratio
10:1 Ratio
20:1 Ratio
30:1 Ratio
40:1 Ratio
60:1 Ratio
80:1 Ratio
120:1 Ratio
Shim Cam Block (.080 THK.)
Shim Cam Block (.020 THK.)
Shim Cam Block (.016 THK.)
Limit Switch Standard S.P.D.T.
Optional D.P.D.T.
Optional S.M.S.B.
Adjusting Bracket Assembly
Gear and Roller Assembly
Spring, Compression
Lever Assembly
Cover
Cover Gasket
Spacer Center Post
Woodruff Key (#404) |
PSD-0092400-DN
PSD-0092500-DN
PSD-0092600-DN
PSD-0092700-DN
PSD-0092800-DN
PSD-0092900-DN
PSD-0093000-DN
PSD-0093100-DN
PSD-0093500-DN
PSD-0093600-DN
PSD-0093700-DN
PSD-0093800-DN
PSD-0093900-DN
PSD-0094000-DN
PSD-0094100-DN
PSD-0094200-DN
PS-0003300-A
PS-0000800-A
PS-0003200-A
1950-1-B-A-DO
1950-4-B-A-DO
1950-1408
PSD-0024700-B
PSD-00904-00-A
PM-001 8000-A
PSD-0024500-A
PC-0069200-A
PS-0001 000-A
M-0073000-A
04-56401 9-DN |
1
....
....
....
....
....
....
....
....
1
....
....
....
....
....
....
....
....
1
1
3
4
....
....
1
4
4
2
1
1
1
1 |
|
TO ADJUST SWITCH "H"
- Loosen Green Set Screw
- Turn "D" to Trip "H"
- Tighten Green Set Screw
|
TO ADJUST SWITCH "G"
- Loosen Yellow Set Screw
- Turn "C" to Trip "G"
- Tighten Yellow Set Screw
|
WARNING:
LOOSEN CAM SET SCREW BEFORE ADJUSTING OR DAMAGE OF CAMS WILL OCCUR |
|
|
Contact positions shown are when cams ARE NOT actuating levers.
DESCRIPTION
This rotary limit switch is designed to control the limits of travel of rotating reversing equipment. The limit switch input shaft is connected to a worm gear. Adjustable self-lubricating nylon roller cams are concentrically mounted to the worm gear. These adjustable cams actuate the precision limit switches by utilizing a lever assembly.
INSTALLATION
This limit switch maybe mounted in any convenient position. When installed this limit switch will provide long life with a minimum amount of service maintenance.
The following recommendations will prove helpful.
- Install the limit switch so that the shaft load will not exceed (5) live pounds.
- A flexible coupling is recommended for all installation other than gear drive application.
- Coupling should be employed in a manner that results in a minimum of thrust loading on the shaft. If switches are mounted with the shaft up or down, some additional thrust loading resulting from the weight of the shaft plus a very light coupling is permissible.
- Whenever possible, a separate support bearing for the drive sprocket should be used.
- Permissible speed of the input shaft 2000 R.P.M.
LUBRICATION
This limit switch was lubricated at the factory and should not require lubrication for the life of the switch.
ADJUSTMENT
Refer to figure 1. The electrical switch units “G”, “H' , “L” AND “M” are shown with the contact positions assumed when the cams ARE NOT actuating the switch units.
When the cam rotates and actuates the switch, the “B” (closed) contact opens and the “A” (open) contact closes. Each precision switch has (1) one independent adjustable cam.
|
| Nominal Input Shaft to Cam Ratio |
Turns of Input Shaft
|
|
Maximum
|
Minimum
|
Over Travel
|
To Reset
|
|
5:1
10:1
20:1
30:1
40:1
60:1
80:1
120:1
|
4
8-1/2
17
26
35
53
72
108
|
1/8
1/4
1/2
1
1
2
2-1/2
3
|
1/8
1/4
1/2
3/4
1
2
2-1/2
3
|
1/16
1/8
1/4
3/8
1/2
3/4
1
1-1/2
|
RENEWAL PARTS
When ordering Renewal Parts give this form No. PF-047, Item No., Description, Part No., Quantity, and the Complete Unit Number stamped on the label. Reference FIG. #1 and FIG. #2 above.
| ITEM |
DESCRIPTION |
PART NUMBER |
QTY. |
1
2
3
4
5
6
7
8
9
10
11
12
13
14 |
Case and Shaft assembly
5:1 Ratio
10:1 Ratio
20:1 Ratio
30:1 Ratio
40:1 Ratio
60:1 Ratio
80:1 Ratio
120:1 Ratio
Cam block & Worm Gear assy.
5:1 Ratio
10:1 Ratio
20:1 Ratio
30:1 Ratio
40:1 Ratio
60:1 Ratio
80:1 Ratio
120:1 Ratio
Shim Cam Block (.080 THK.)
Shim Cam Block (.020 THK.)
Shim Cam Block (.016 THK.)
Limit Switch Standard S.P.D.T.
Optional D.P.D.T.
Optional S.M.S.B.
Adjusting Bracket Assembly
Gear and Roller Assembly
Spring, Compression
Lever Assembly
Cover
Cover Gasket
Spacer Center Post
Woodruff Key (#404) |
PSD-0092400-DN
PSD-0092500-DN
PSD-0092600-DN
PSD-0092700-DN
PSD-0092800-DN
PSD-0092900-DN
PSD-0093000-DN
PSD-0093100-DN
PSD-0093500-DN
PSD-0093600-DN
PSD-0093700-DN
PSD-0093800-DN
PSD-0093900-DN
PSD-0094000-DN
PSD-0094100-DN
PSD-0094200-DN
PS-0003300-A
PS-0000800-A
PS-0003200-A
1950-1-B-A-DO
1950-4-B-A-DO
1950-1408
PSD-0024700-B
PSD-00904-00-A
PM-001 8000-A
PSD-0024500-A
PC-0069200-A
PS-0001 000-A
M-0073000-A
04-56401 9-DN |
1
....
....
....
....
....
....
....
....
1
....
....
....
....
....
....
....
....
1
1
3
4
....
....
1
4
4
2
1
1
1
1 |
|
TO ADJUST SWITCH "M"
- Loosen Red Set Screw
- Turn "K" to Trip "M"
- Tighten Red Set Screw
|
TO ADJUST SWITCH "L"
- Loosen Blue Set Screw
- Turn "J" to Trip "L"
- Tighten Blue Set Screw
|
|
TO ADJUST SWITCH "H"
- Loosen Green Set Screw
- Turn "D" to Trip "H"
- Tighten Green Set Screw
|
TO ADJUST SWITCH "G"
- Loosen Yellow Set Screw
- Turn "C" to Trip "G"
- Tighten Yellow Set Screw
|
WARNING:
LOOSEN CAM SET SCREW BEFORE ADJUSTING OR DAMAGE OF CAMS WILL OCCUR |
|
|
Special Gemco Rotary Limit Switches
To Meet Your Specific Applications
|
Two Circuit Rotary Limit Switch with a Special Mounting Bracket and Integral Right Angle Worm Gear for Mounting in a Power Jack. |
Special NEMA 4 Four Circuit Rotary Limit Switch with a Potentiometer for mounting on a rotary valve. |
|
Special Two Circuit Open Type Rotary Limit Swithch with a Single Turn Potentiometer. |
Special Three Circuit Rotary Limit Swithch used on a Mobile Man Lift. |
Rotary Limit Switches
|
WORM GEAR TYPE
Ratios from 5:1 to 5333.3:1 |
SPUR GEAR TYPE
Ratios from .5:1 to 3:1 |
HEAVY DUTY TYPE
Ratios from 5:1 to 3000:1 |
CATALOG SECTION 2006
TYPE K TORATY LIMIT SWITCH |
2 CIRCUIT
WORM GREAR TYPE
Ratios from 5:1 to 1080:1 |
4 CIRCUIT
WORM GREAR TYPE
Ratios from 5:1 to 1080:1 |
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