| Installing Expanding Adaptors |
| See also Fitting Instructions Expanding Adaptors and the Price List for more info. |
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When you purchase
your castors from Fallshaw, the adaptor set is already assembled to the
castor. Due to the greater offset, expanding adaptors are not recommended for use on 175 or 200mm castors. If you do use expanding adaptors on these larger sizes be sure to fit a bolt 18mm A/F hex (and branded M8.8). |
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| Mounting
axis must be vertical ![]() |
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| If
a weld bead is present inside the tube, align one of the slots in the adaptor
sleeve with the bead. Try the fit of the cone/sleeve with the bead, it should
be a neat sliding fit. If not screw the cone/sleeve down a little and try
again. Repeat this process until it is a neat fit. NOTE: The cone is not shown for clarity. |
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Insert
the adaptor fully onto the tube. Line up the notches of the expanding fitting with the slots on the castor rivet. Put slight sideways pressure on the castor to help the fittings grip, then tighten the pintle up firmly to '3 finger tightness' i.e. the amount of torque you can get onto a standard spanner using your 3 middle fingers (25-30N/m). On round tubing some bellowing between 0.5 to 1.0mm will occur, while on square tubing the bellowing is 1.0 to 1.5mm, |
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and can be used as an indication as to whether you have achieved the correct
amount of torque. (NOTE: if you over tighten this may split the tube (dangerous!),
and may distort the fittings making them difficult to reuse. However, if
you under tighten the fittings they will not grip the tube sufficiently
and the castor may drop out (also dangerous!)). Use the right amount of torque - 3 finger tightness, and use the sign of bellowing as a guide. If you haven't already done so, you can now assemble the wheel to the castor. |
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| Maintenance You should retighten the adaptors after 3 months of use, and then every 12 months after that - remember the 3 finger rule, i.e. the amount of torque you can get onto a standard spanner using your 3 middle fingers (25-30N/m). To remove the castor - loosen the bolt, and then tap the head - this will drive the cone up out of the sleeve, and then the castor can be easily removed from the tube. A small amount of crushing of the cone is normal and proper (it prevents the bolt unscrewing unintentionally). The cone can be reused if not damaged. If damaged by excessive tightening the cone should be replaced. If the sleeve has been damaged, it also must be replaced. |
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Warped
trolleys You can compensate for a warped trolley by adding up to 8mm in washers, or by using a similar piece of tubing to that of the trolley. |
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