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11.4 The table insert
The table insert on a bandsaw is a consumable item Fig.11.9 and will
therefore need replacing periodically. This procedure should be carried out
with the bandsaw blade removed. To replace the table insert simply push
the old insert out from underneath the table and fit the new one
into position.
11.5 The bandwheel tyres
The bandwheels on this machine have rubber tyres fitted to the outer rim
of the wheel Fig.11.10 to protect the set of the blade when in use, also to
provide drive and to stop the blade slipping. As part of your regular service
schedule inspect the tyres for wear and damage and replace if necessary.
Again this is a consumable part of the bandsaw and will need replacing
periodically depending on usage.
First remove the blade from the bandsaw, then remove the bandwheel.
Gently ease the existing tyre from the rim taking care not to damage the
bandwheel. To fit the new tyre it is a good idea to heat the tyre first in
hot water, this softens the rubber up and makes it easier to stretch it over
the bandwheel. The tyres before stretching are much smaller than the
bandwheel and a good deal of stretching is required to make them fit. It is
advisable to get help from a second person who can insert the wheel into
the tyre while it is fully stretched. It is easier to replace the tyre with the
wheels removed.
11.6 The bandwheel bearings
The bandwheel bearings are sealed for life units which will need replacing
periodically depending on usage.
To replace the bearings; first ensure that there is no blade fitted. Remove
the circlip from the hub and remove the bandwheel, you will notice that
there are two separate bearings fitted in the hub pressed up against each
other. Take a brass drift (or similar) and tap one of the bearings out, the
second bearing should now be able to be pushed out.
When fitting the new bearings; position by hand in the wheel hub and tap
in until the bearing seats against the ridge in the casting. Fig.11.11.
11.7 Cleaning the table
The table is ground from cast iron and if cared for properly will provide
smooth accurate performance. Obviously when machining wood a certain
amount of resin will be deposited on the surface, to ensure optimum
performance the table needs to be properly cleaned at regular intervals.
Firstly brush off all loose particles, then wipe clean with white spirit
ensuring that any resin build up is dispersed and removed. Once the
table has been thoroughly cleaned it can now be treated with CWA195
silicone spray or wax. If these guidelines are followed the timber will glide
smoothly and accurately across the table.
11.8 The bandwheel brush
The purpose of this brush is to remove any excess sawdust and resin
from the bandwheel and tyre Fig.11.12. This brush will need adjusting
periodically depending on usage. Before each use inspect the brush and
make sure it is making sufficient contact with the bandwheel to remove
sawdust from the tyre. The brush should be touching but not applying
pressure to the wheel. If it isn’t, loosen the fixing and adjust accordingly so
it makes contact with the wheel. When the brush cannot be adjusted any
nearer the wheel due to the bristles being worn, then it must be replaced.
Periodically the brush may also become clogged up with resin (this is
especially common when cutting a long run of soft wood) if this occurs this
resin must be scraped off, as performance of the brush will be reduced.
11. Maintenance
Fig.11.9
TABLE INSERT
Fig.11.10
BANDWHEEL TYRE
Fig.11.11
Fig.11.12
BANDWHEEL BRUSH
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