Myford ml7 “parting off”and “max working size”

[noel shelleyParticipant @noelshelley55608]

Hi Van Dutch, I would only use a link belt if it was impossible to fit a normal V belt ! If the lathe is an ML7 then the belt for the headstock is A23/A620. removing the mandrel is easy though the counter shaft is a little more trouble. Check that your pulleys are not badly worn, this could be the cause of your trouble. The link belt may be bottoming in the groove and slipping. Good luck Noel

[von dutchParticipant @vondutch]

Yes I think I will replace with a proper vee belt,I can change the chipped bull gear as well while I'm there.Thank you for everyone's input.

[Howard LewisParticipant @howardlewis46836]

The parting tool needs to be as rigid as possible, so minimise the overhang. My HSS blade is adjusted for minimum protrusion from the holder .

If parting off large diameters, I rig a gravity feed to a home made needle valve and jet held on a small magnetic post on the Cross Slide, so that the blade gets a steady drip, or flow of soluble oil.

The feed comes from a plastic "pump" bottle on a shelf above the lathe, with the feed tube being a length of plastic screen washer pipe pushed onto the spout from the pump. The pump is handy to prime the system and start the soluble oil syphoning down the tube to the workpiece.

Howard

[Author]

Posts