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Installing the Actuator for Three-Point Mounting
The ML6275 Direct Coupled Actuator is designed with
removable hub sleeves to accommodate specific damper
shaft sizes. Proper sleeve selection is necessary when three-
point mounting is used to avoid excessive strain on the output
gear. Most ML6275 Actuators are shipped with a 1/2 in. hub
sleeve. For field use, several hub sleeve sizes are available.
See the Accessories listing in the Specifications section. Shaft
sizes are stamped on the sleeves.
The ML6275 Direct Coupled Actuator can be mounted directly
on the motor shaft with the actuator in any position when the
actuator housing is parallel with the damper housing or frame.
(See Fig. 7.)
2
ML6275 SPRING RETURN DIRECT COUPLED ROTARY ACTUATOR
The ML6275 Direct Coupled Actuator has a reversible output
hub. The hub is factory-mounted on the top of the actuator
gear housing. When attaching to damper shafts less than 3.5
in. (76 mm) long, or for ease of mounting, the output hub can
be mounted to the inside of the actuator gear housing. See
Fig. 3. Be careful when removing the retaining ring that
secures the output hub to the actuator housing. Use a
flatheaded screwdriver to pry the ring loose.
Other possible mounting configurations and standard
connections are shown in Fig. 4 through 7.
6
1
3
6 0
3 0
9 0
6 0
3 0
0
Fig. 3. Mounting hub to inside of actuator.
5
DETENT
INSERT
4
5
INDICATOR
DETENTS
M7228
63-2493—1
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