Hardinge mill is on the ground- motor pulley?

The TM ("toolroom mill") pulleys are usually fibre, whereas the quite similar TL ("toolroom lathe") pulleys are usually aluminum.

Four sheaves plus a two-speed motor gives eight speeds.

Sixteen speeds for the TL, as it has a backgear.

"Consequent pole" motors (six wires, single voltage, two speeds) are usually found on the TLs, and conventional motors (eighteen wires, dual voltage, two speeds) are usually found on the TMs.

(A UM is a TM with a rotating table).

"Consequent pole" motors have been seen on TMs, however.

The cabinet drive system of a mill is nearly the same as a lathe.

(HLV-H lathes still use some parts of the TL, and those parts are prefixed with "TL").

TM/UM, TL and split bed HCs all came from the same serial number sequence, from

The list of serial numbers, by year, was posted by me to the Yahoo! Hardinge_Lathe group.

Home-built arbors seem to be the rule rather than the exception. They are 5C on the spindle end.

Doh! No wonder the 'missing motor pulley sounded familiar!

:^)

Jim

The DSM lathes also use phenolic pulleys, interestingly. Or, at least mine does.

Jim

The drive collar didn't look exceptionally difficult to fabricate. However, Hardinge sold 5C stub arbors without the drive collar.

Kevin Gallimore

Yep, that's right. But the stub arbors are for driving smaller plain cutters, that mount on half inch diameter arbors. I guess what I was getting at is, it would be a mistake to simply take a 5C stub arbor, or plug chuck, and extend it out to full length with a one inch shank, and then try to take full depth cuts with a full size plain milling cutter. The drive key inside the spindle would shear real fast.

But you're correct, the drive dog setup would be easy to replicate.

Jim