111032 Rev --
Page 3
Effective 9/97
REPEAT ACCURACY
The type of operating head used on an assembled limit
switch determines repeat accuracy for the switch assembly.
Assembled limit switches, without rollers used on operating
heads or levers, have a repeat accuracy as listed in Table 1
only.
Assembled limit switches with rollers used on operating
heads or levers have a repeat accuracy determined as
follows: add the repeat accuracy tolerance of Table 1 for the
type of operating head used to the concentricity tolerance of
Table 2 for the type of roller used on the lever or operator.
The combination of these two tolerances is the limit switch
repeat accuracy.
Operating Data —Nominal
Operating
Travel To
Travel To
Force To
Minimum
Temp.
Catalog
Operate
Reset
Total
Operate
Return
Range
No.
Contacts
Contacts
Travel
Contacts
Force
(See Table)
5°
2°
90°
3 in.-lbs.
4.5 in.-oz.
A
E50DR1
5°
2°
90°
3 in.-lbs.
4.5 in.-oz.
D
E50DR19
15°
6°
90°
1.5 in.-lbs.
2.5 in.-oz.
A
E50DL1
50°
50°
90°
3 in.-lbs.
—
B
E50DM1
0.065 in.
0.030 in. 0.290 in.
4 lbs.
8 oz.
B
E50DS1
0.065 in.
0.030 in. 0.290 in.
4 lbs.
8 oz.
B
E50DS2
0.065 in.
0.030 in. 0.290 in.
4 lbs.
8 oz.
B
E50DS3
0.200 in.
0.130 in. 0.320 in.
5 lbs.
5 lbs.
B
E50DH1
0.040 in.
0.020 in. 0.280 in.
4 lbs.
8 oz.
C
E50DT1
0.040 in.
0.020 in. 0.280 in.
4 lbs.
8 oz.
C
E50DT2
0.040 in.
0.020 in. 0.280 in.
4 lbs.
8 oz.
C
E50DT3
10°
6°
15°
2 in.-lbs.
2.4 in.-oz.
C
E50DW1
10°
6°
15°
2 in.-lbs.
2.4 in.-oz.
C
E50DW2
Standard
Spring Return
Low Temperature
Spring Return
Low Force
Spring Return
Maintained
Two position
Pushbutton
Spring Return
Pushbutton Adjustable
Spring Return
Push Roller
Spring Return
Pushbutton
Maintained
Pushbutton
Spring Return
Pushbutton Adjustable
Spring Return
Push Roller
Spring Return
Standard
Spring
Duty
Return
Heavy
Duty
Description
Operating Heads
Side Rotary
Side Push
Top Push
Wobble Head
OPERATING HEAD DATA
TABLE 1
Operating Head
Repeat Accuracy
1
Side Operated
Standard Construction
within 0.0012”
Low Operating Force
within 0.0024”
Two-Step
within 0.006”
Neutral Position
within 0.006”
Side Push
within 0.003”
Top Operated
Top Push
within 0.002”
1
Measured along arc for 1-1/2” lever or measured along push operator axis.
TABLE 2
Type
Diameter
Width
Concentricity Tolerance
Lever Roller Type
Nylon
3/4”
5/16”
+/-0.002”
Metal
3/4”
5/16”
+/-0.001”
Nylon
3/4”
1”
+/-0.005”
Ball Brg.
11/16”
1/4”
+/-0.002”
Nylon
1-1/2”
9/32
+/-0.005”
Push Roller Type
Metal
7/16”
5/32”
+/-0.002”
Metal
3/4”
5/32”
+/-0.005”
