Siemens 1LA8 - Installing the V Ring (Increased Degree of Protection Option)

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 9-5 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 degree of protection IP56 (non-heavy-sea)
For degree of protection IP56 (non-heavy-sea), the V ring for the outer bearing seal is fitted
with a protective ring ③ in the bearing cover made of sheet metal.
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.
9.2.8.6 Installing the V ring ("Increased degree of protection" option)
The grease chamber of the labyrinth sealing ring together with the V ring ensures compliance
with degree of protection IP65.
Maintenance
9.2 Corrective Maintenance
SIMOTICS TN Series N-compact 1LA8
126 Operating Instructions 08/2017