Alpine

[500e]

Have an Alpine A-13 bench drill sold by Graham Engineering of Birmingham (long gone) made it Taiwan
The 2 belts are showing their age one is an M32 Other is M33 the length is about correct but the form seems strange with is 9.5mm 375 Th, depth is 5.5mm 220Th these are aprox as belt is worn but not that much, this does not fit any form I can see
The M supposedly changed to a Z section or a 3VX may be any one with this drill like to have a look, it looks like an older Clark but their belts are same length don't know form
Please, or is the lock-down affecting me already

 

[timgunn1962]

Unless it’s an unusually shallow-grooved pulley, an SPZ or XPZ cogged/moulded-notch belt “should” work fine. I think the old m-section belts were sized on outside length, where the later belts are sized on pitch length. If there’s any adjustment available, the length shouldn’t be critical to within a few mm and the difference between outside and pitch length will only be around 6-8mm.

32” is 812mm and 33” is 838mm. I would try an XPZ812 and an XPZ837. If there is not enough adjustment to take out the slack, changing the XPZ837 for a shorter belt should do it. The next size down is 825.

 

[Agroshield]

Please have a look at the diagram posted here:

https://www.model-engineer.co.uk/forums/postings.asp?th=107443

I think from your measurements, it is a Z-section (left side, lower line of diagram)

 

[nickk]

This is mine ,it’s the first driver ,from the motor,can’t get the second driver off as the slim bolt heads have rounded,but pretty sure it’s a Z.

 

[500e]

The Z seems to be closest to the measurements Thanks All