The Utile Engineering Co. Ltd.
15/08/06
Irthlingborough, Northamptonshire. England
Tel: +44 (0) 1933 650216
Fax: +44 (0) 1933 652738
6 IC183
Foundation
Simple slab type foundations, designed for static loadings only are satisfactory. The foundations should raise the
machine to a reasonable height above the floor for convenient service and inspection. The use of anti-vibration
mounts between the base and foundation are recommended, these absorb the vibrations generated by the rotating
parts of the machine and insulate it against any vibration in the surrounding environment. Ensure that the anti-
vibration mounts are evenly loaded. Foundation bolts should fix the base.
Electrical Supply and Connection
Check the voltage rating of the supply is compatible with the fittings. Electrical installation must be carried out by a
qualified electrician and in accordance with current regulations and within the framework of the Electricity of Work
Regulation 1990. Check security of all electrical connections, plugs, sockets before switching the power supply on.
Drive Alignment
The rotor shaft must always be horizontal. There are three basis modes of misalignment; these are angular, parallel
and axial (shown in fig. 4).
Pulleys and couplings should be bored to our standard limits and fitted on the shaft with a screwing motion. On no
account should they be driven on. Tapping of fitments onto the machine shaft with a hammer or mallet, causes
bearing damage. This results in increased bearing noise and a significant reduction in bearing life.
Flexible Coupling
1.
Remove any dirt, oil, etc. from all mating surfaces. Place bush in hub and
match half holes on both shafts.
2.
Place setscrews loosely in threaded holes. Mount assembly in desired
position on shafts.
3.
Tighten setscrews. Place disc/flexible coupling in position, and bring the
shafts together obtaining the manufacturers assembled length for the
coupling given in their instructions.
4.
To check for angular alignment: (see fig. 5)
Rotate the coupling through 90
°
and measure the distance between the
faces. Repeat adjusting the shafts until four identical measurements are
obtained.
To check for parallel alignment: (see fig. 5)
Place a straight edge across the coupling. The hubs will be in correct
alignment when the straight edge contacts the 4 points squarely.
Drive Belts
1.
Remove any dirt, oil, etc. from all mating surfaces. Place bush in hub and
match half holes on both shafts.
2.
Mount assembly in desired position on shafts ensuring both shafts are
parallel and in correct alignment, use a straight edge, a correctly aligned
drive will contact both pulleys squarely (see fig. 6).
3.
Fit driving belts. Measure span of belts between tangent points of the two
pulleys. A deflection of 1.5mm is obtained for
every 100mm of the measured span. Compare
the deflection force required with the table. If
the force required is according to the table
then the tension is suitable. Too little force
indicates under-tension and visa-versa.
4.
The belts should be tensioned towards the
high side, to allow for the tension drop after the belts have been run-in. Belt
tension should be checked daily in the first week after installation/renewal.
Belts, which become charged electrostatically, must not be used in hazardous atmospheres.
Installation
Belt
Section
Force Required to
deflect belt 1.5mm per
100mm span (kgf)
SPZ
0.5 to 0.8
SPA
1.0 to 1.5
SPB
2.0 to 3.1
SPC
4.1 to 6.1
Parallel Alignment Check
Angular Alignment Check
Fig. 5
Angular Misalignment
Parallel Misalignment
Axial Misalignment
Fig. 4
Correct pulley alignment
Span Distance
Fig. 6
