Concrete Foundations; Concrete Foundation With Foundation Blocks - VEM W41 Series Installation, Operating And Maintenance Instructions

Installation, Operating and Maintenance Instructions (Translation)

After the motor has again been placed on the steel foundation the exact alignment can start immediately
(see chapter 8).

7.7 Concrete foundations

The used concrete must have a minimum quality complying with strength class C20/25 according to EN 206-1 or
C20/25 according to DIN 1045-2. Before starting the work the raw foundations must be compared with the infor-
mation on the dimensional drawing.
The term „anchor bolt" is used in the following for anchor screws, stone bolts and T-head bolts.
In the following figures the anchor bolts are used shortened. The length depends on the constructional details.
Tightening torques
The tightening torques are only valid for anchor bolts in concrete foundations. For tightening torques for motor
screws refer to chapter 11.
Threads lubricated
with MoS2 compound
(=0,11)
Dimension Assembly
[Nm]
M24 148
M30 296
M36 509
M42 826

7.7.1 Concrete foundation with foundation blocks

Procedure:

The foundation blocks (4) are screwed on centred to the through bores of the machine feet (10) without the
shims (9). To ensure exact centring the hexagonal head screws (12) can be covered with pieces of card-
board.

The motor is placed on the prepared raw foundation (1) were the holes for the foundation blocks (4) are al-
ready available.

The motor must be aligned roughly. During this process a uniform gap (for exact dimension refer to the
coupling manufacturer or plant project) between the coupling and the work machine must be kept. The di-
mension of the gap must be measured right and left. The difference should not be bigger than 0.5 mm. The
motor must stand 3-4 mm lower than the work machine so that it is possible to do exact alignments with
shims.

With a water level the horizontal alignment in longitudinal and transversal direction is checked. For the lon-
gitudinal check the water level is placed on the cylindrical shaft end or the clutch hub; for the transversal
check it is placed on the housing. If necessary the above listed steps must be repeated.

The bores of the foundation blocks must be wetted and if necessary excess water must be removed.
.
VEM motors GmbH-2013
Threads slightly oiled
(=0,14)
Test Assembly
[Nm] [Nm]
126 182
252 366
433 631
702 1025
1 Raw foundation
2 Cast concrete
3 Sprue
4 Foundation block
9 Shims for exact alignment
10 Foot of machine
11 Washer, reinforced
12 Hexagonal head screw ISO 4017
Test
[Nm]
155
311
536
871
11
English