Bolted Connections - Siemens 1PH728 Series Operating Instructions Manual

Bild 7-5
(1) Bearing cap end face
(2) Rotary shaft seal
(3) Shaft seat
The correct axial position of the rotary shaft seal is reached when the outer edges
of the bearing cap end face (1) and rotary shaft seal (2) are flush.
See also
Lubrication
7.3.4

Bolted connections

Tightening torques for screw and bolt connections
The bolted connections with metal contact surfaces (end shields, bearing cartridge
parts, terminal box parts bolted onto the stator frame) should be tightened to the
following torques, depending on the thread size.
Tightening torques (Nm, with a ± 10% tolerance) for a thread size of
M6
8
Please refer to the relevant sections and drawings for all other tightening torques
(electrical connections and bolted connections for parts with flat gaskets).
Bolt locking devices
Nuts or bolts that are mounted together with locking, resilient and/or force-
distributing elements (e.g. tab washers, spring lock washers, etc.) must be refitted
together with identical, fully functional elements.
Always renew positive-action locking elements!
SIEMENS AG - Operating Instructions
Three-phase induction motor 1PH728.
(1)
(2)
(3)
Installing the rotary shaft seal
[ → Page 7-3]
M8 M10
20 40 70
M12 M16 M20
170 340
Maintenance
M24
360 Nm
7-15