Install the V ring
1. Grease the axial sealing surface. The shaft seating remains ungreased.
① V ring
② Mounting aid washer
③ Protective ring
Figure 9-6 Install the V ring
2. Push the V ring ① onto the shaft using an assembly disk ②.
The V ring is in the correct axial position when the face surface is flush with the outer edge
of the V ring.
Install the protective ring for IP56 degree of protection
For degree of protection IP56, the V ring for the outer bearing seal is fitted with a sheet steel
protective ring ③ in the bearing cover.
1. Push the protective ring onto the shaft.
2. Verify that the ring is sufficiently pretensioned. Replace the protective ring, if necessary.
3. Position the protective ring so that one of the longitudinal grooves meets the corresponding
water separation groove at the bottom in the bearing cover flange or end shield.
9.2.3.6 Installing felt rings for the inner bearing seal
Depending on the particular version, the motor is equipped with a felt ring in the inner bearing
cover. The felt ring prevents dust and grease from entering the interior of the machine.
Procedure
● Before installing new felt rings in the bearing cover, soak them in hot oil (approximately
80°C), such as DIN 51517‑C100 lubricating oil.
● Place the felt ring into its notch on the bearing cap and push the bearing cap onto the shaft.
Maintenance
9.2 Corrective Maintenance
SIMOTICS HV M 1RN76308PR900CG0-Z
106 Operating Instructions 07/2018
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