SERIES 90 MODUTROL IV
™
 MOTORS
3 63-2631—07
Fig. 1. Stroke.
Fig. 2. Modutrol IV Motor mounting dimensions in inches (mm).
Stroke: Models available with field adjustable stroke from 90° to 160° (See Settings and Adjustments figure 11).
FULLY OPEN
90 DEGREE STROKE 160 DEGREE STROKE
M31079
VERTICAL
REFERENCE
FULLY CLOSED
160 
10 
VERTICAL
REFERENCE
FULLY CLOSED
90 
10 
FULLY OPEN
VERTICAL
REFERENCE
VERTICAL
REFERENCE
FULLY CLOSED
FULLY OPEN
FULLY 
CLOSED
FULLY 
OPEN
90 DEGREE STROKE 160 DEGREE STROKE
NON-SPRING RETURN MOTORS
160  
10  
90  
45  
SPRING RETURN MOTORS AND NON-SPRING RETURN MOTORS
ASYMMETRICAL MOTORS
 SYMMETRICAL MOTORS
M18998D
4-7/8
(124)
5-1/2
(140)
13/16
(20)
4-1/16 (103)
1/4
(7)
1-1/2 (37)
5-1/2 (140)
JUNCTION
BOX
MOTOR
AUXILIARY
END
POWER
END
ADAPTER
BRACKET
2-9/16
(66)
5-3/8
(137)
6-7/16
(164)
9/16 (15)
3/4
(19)
TOP VIEW OF BRACKET TOP VIEW
4-5/8
(116)
4-1/4
(107)
2-5/16
(58)
11/16
(17)
4-7/8 (124)
5-9/16 (141)
1/4 (7)
5-13/16
(148)
1
POWER END
2
3
1-1/2 (37)
3/4
(19)
SPRING RETURN MODEL SHOWN
FOR 60 LB-IN. SPRING RETURN MODELS 8-3/4 (222). 
FOR NON-SPRING RETURN MODELS 7-5/16 (185).
FOR 60 LB-IN. SPRING RETURN MODELS (SHOWN).
FOR NON-SPRING RETURN MODELS.
1
2
3
13/16
(20)