Before ordering, please read the following carefully:
The ideal installation for any machine tool is an Betalon-Multiply belt - made either endless, or supplied as a DIY kit length with the ends scarfed and the glue, the resulting joint being smooth and tremendously strong.. These belts are light in weight but immensely strong and stretch resistant. They absorb shock loads well, have a high coefficient of friction, enjoy a proven record of reliable industrial service and can be made in almost any combination of length and width.
Of course, if the belt is made for you as a loop, as with an ordinary V belt, you may have to dismantle pulleys, etc., to fit it, but the trouble taken will be well worth while - the drive to your machine will be quieter, smoother and much more reliable. For belts with a clip fastening click here
When you order a DIY kit you, must, of course, measure the finished length you need very carefully* - all we need is the required finished length. Don't add anything for the overlap, we take care of that.
What do we mean by "finished length" ? It means the length of the belt cut, laid flat on a table and measured from one end to the other. If in doubt about any aspect of this (we also supply belts in other materials) just phone 01298-871633 (09:00 to 23:00) for advice....
MEASURING THE LENGTH
*Most - but not all - belt-drives have a tensioning mechanism. As belts stretch slightly in service, before measuring set any adjustment to get the pulleys nearly, but not quite, as close together as possible. Click here for additional detailed advice on finding the right length.
Tensioning systems include:
1) one or more jockey pulleys that press on the back of the belt
2) the motor mounted on an adjustable plate
3) to set the final tension possibly an "over-centre" lever with a screwed-rod and turn-buckle
4) grinding machines sometimes have a weighted jockey pulley. To get the correct length lift the weight and pull the measuring tape (or old belt) straight between the pulleys.
Measure using a non-stretch (e.g. dress-maker's) tape. If two people measure independently mistakes are less likely.
Width:In general belts can be to the full width of the pulley less 2 mm - but if the pulley has flanges reduce the belt width by 4 mm to allow a small gap at each side.