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c. Remove the lock bar from the ½" hex of the gearmotor output shaft (use the 5/16"
wrench to rotate the brake end of the motor as necessary, to relieve pressure from the
lock bar).
d. Release the motor brake by removing the 5/16" inch wrench. The Gate arm will
descend to the horizontal position in a controlled manner.
e. Reapply power to the gate mechanism by closing the test links on Terminals 4 and 5 (if
previously removed).
The following table provides counterweight and torque guidelines for fiberglass/aluminum gate arms.
Table 4-2 Fiberglass/Aluminum Gate Arm Counterweights and Vertical Torque
Gate Arm
Length (ft)
Counterweights
12' – 15'
mounted on one
Support Arm
16' – 20'
21' – 22'
23' – 27'
28' – 32'
Counterweights
33' – 36'
mounted on two
Support Arms
37' – 40'
SIG-QG-21-01
Version: A
Counterweights
Required
Std.
Short
1
3
2
5
3
7
4
10
5
10
6
13
7
17
The values listed in the table above are approximate as there are differences
between various gate arm manufacturers.
Due to variations in gate arm cross sections, arm material, gate arm lights,
and gate arm adapters, torque must be checked. Table 4-2 is a rough
approximation when using a conversion bracket.
ENTRANCE GATE INSTALLATION AND SETUP
Stud Plate
Gear Motor Output
NYK: 070757
Std.
Short
-26X
-30X
-26X
-30X
-26X
-30X
-26X
-30X
-26X
-30X
-26X(2)
-30X(2)
-26X(2)
-30X(2)
NOTE
NOTE
4-11
Main Shaft
Shaft Torque
Torque
(inch-pounds)
(foot-pounds)
Min
Max
Min
64
75
175
64
77
175
64
77
175
70
84
190
86
96
235
96
110
260
110
129
300
NOVEMBER 2021
Max
205
210
210
230
260
300
350
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