ABB RHD Series - Rhd1250; Motor; Motor Assignment and Tightening Torque

RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/RHD250/4000-EN REV. A 13
RHD1250... RHD4000
1
Hood fastening screw
2
O-ring
3
Hood
4
Sealing ring
5
Shaft
6
Hexagon screw
7
Pinion
Figure 11:
In order to change the O-ring
2 and the sealing ring 4, firstly
remove the position sensor Dismounting on page 27 and
proceed as follows:
1. Make sure that the oil level is below the O-ring
2
2. Drain the oil if necessary (Mounting position on page 6 for
details).
3. Loosen the hexagon screw
6 and pull apart the pinion 7
4. Undo hood fastening screws
1
5. Pull the hood
3 with sealing ring 4 carefully from the
shaft
5 and put it aside
6. Replace the O-ring
2
7. Pull the old sealing ring
4 out of the groove
8. Grease the new sealing ring slightly with oil and put it in
9. Clean the shaft and the contact surfaces of the hood
10. Push carefully the hood
3 with O-ring 2 and sealing
ring
4 on the shaft; take care that the shaft end does not
damage the sealing ring
11. Fasten the hood
3 and thighten the screws 1 crosswise
with 23 Nm (17 ft-lbs)
12. Fasten the pinion
7 and tighten the hexagon screw 6 with
42 Nm (31 ft-lbs)
Motor
By the time of printing this document Contrac actuators use two
basic motor series.
Motor type MC..71..... MC..100 of the series 1 feature a ‘C’ at the
end of the name code, motor type MC..71..... MC..100 of the
series 2 feature a ‘D’.
Motor type MC..112 of the series 1 features a ‘B’ at the end of the
name code, motor type MC..112....of the series 2 features a ‘C’.
See 4.6.1 for details.
Both series differ in minor details which are named where
applicable.
Motor assignment and tightening torque
Tightening torque for motor screws
Actuator
Motor
Add. flange
Tightening
torque
RHD250-10
MCS 71 BA / MCSS71BA
—
20 Nm (15 ft-lbs)
RHD500
-10
MCS 71 BA / MCSS71BA
—
20 Nm (15 ft-
lbs)
RHD800-10
MCS 80 BA / MCSS80BA
—
20 Nm (15 ft-lbs)
RHD1250
-12
MCS 80 BA/ MCSS80BA
—
20 Nm (15 ft-
lbs)
RHD2500-10
MC 90 BA
46 Nm (34 ft-lbs)
40 Nm (30 ft-lbs)
RHD2500
-25
MCS 80 BA
—
20 Nm (15 ft-
lbs)
RHD4000-10
MC 100 BA
79 Nm (58 ft-lbs)
69 Nm (50 ft-lbs)
RHD4000
-40
MC 90 BA
46 Nm (34 ft-
lbs)
40 Nm (30 ft-
lbs)