- Power and phase
- Powermatic built the 1200 as an industrial drill press, and the 1997 list shows a 1-1/2 HP three-phase motor at 1,800 RPM as the standard variable-speed version. The motor plate in the listing photos will say what yours has. A three-phase one needs a VFD or a phase converter on house power.
- Motor and bearings
- The variable-speed head changes speed with cam-operated sheaves. Ask for a video of it running from low to high. The speed should change smoothly and the spindle shouldn't chatter.
- Runout
- The quill runs in two 6206-size ball bearings (SKF or equal in the 1966 manual), a standard size. Ask the seller to chuck a drill bit or a straight rod and spin it. It should run without visible wobble, and a dial indicator on a rod is the real check.
- Table and rust
- Ask for a photo of the table and base. Rust on the table cleans up, but cracks or a lot of drilled holes in the table are signs of hard use. The table should crank up and down the column and lock.
- Fence, guards and gauges
- A drill press has no fence of its own. Check the photos for the chuck and its key, and whether it has the production T-slot table or the power feed, both options Powermatic offered.
- Trunnions and adjustments
- The quill return spring and the feed handles are what you use every time. Ask the seller to feed the quill down its full 6 in and let go. It should return smoothly and stop at the top.
- Blades and knives
- The spindle takes No. 3 Morse taper tooling, which is still made, so chucks and drill bits are no trouble. Variable-speed belts and sheave parts are harder to find.
- Dating it
- Serials run N-1nnn for 1955 to 1964, NN-nnnn 1965 to 1968, N20X-nnnn 1968 to 1978 (X is V for variable speed or S for step) and NN20X-nnnn from 1978.
- Moving it
- The floor model is about 600 lb and tall and top-heavy. Lay it down only after taking the head off, or move it upright on a pallet strapped to the column. Never tip it by the head.
- Safety upgrades
- Check that the belt cover is on and the switch works. Clamp work to the table rather than holding it.
Check the listing photos against these lists, and ask the seller about anything you can’t see. A missing fence, guard or motor should come off the price.