ABB RHD Series Service Instruction

18 RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/RHD250/4000-EN REV. A
… 4 Maintenance
… Motor
1
Retaining ring pliers
2
Front flange
Figure 28:
18. Use appropriate retaining ring pliers
1 to remove the
bearing retaining ring out of the front flange
2.
19. Pull the shaft out of the flange.
Exchange of motor bearings
1
Extraction tool
2
Tool claws
3
Inner ball bearing ring
Figure 29: Removal of motor ball bearing (exemplified; illustration applies to all motors)
1. Use an appropriate extraction tool
1 for bearing removal.
2. Make sure that the extraction tool claws
2 pull at the inner
ball bearing ring
3.
Exchange of motor shaft sealing ring
A
Sealing ring seat with shoulder
B
sealing ring seat without
shoulder
C
Oil
1
Sealing ring
2
shoulder
3
Sleeve
4
Motor flange
Figure 30: Inside of the motor flange
1. Take the old sealing ring out
2. Grease the new sealing ring and press it in the flange as
shown in Figure 30; make sure that the ‘open’ Part of the
sealing ring points towards the oil (when the motor is
mounted to the actuator); see Figure 30.
3. Assemble in reverse order; use a customary sealant for both
motor flanges
4. Check the brake gap after re-assembly; see Brake
adjustment on page 19 for details.
1
Sleeve
2
Sealing ring
3
Flange
Figure 31: Mounting the sealing ring

ABB RHD Series Specifications

General

Brand	ABB
Model	RHD Series
Category	Controller
Language	English