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Home Workshop

For Sale: Or Swap - Harrison M300 CNC Lathe - Centroid Acorn

Wed 24th Apr '19

Advert ID: 35258

See all ads from Charl Tintinger

I have 2 CNC lathes since I bought a Hembrug lathe recently and would like to sell / swap my Harrison M300 CNC lathe. This runs off a 220V Single Phase supply.

I bought this lathe about a year ago, part converted to CNC. Mechanicals were done, steppers installed but it had no control board etc.

Ive since installed Centroid Acorn which I use exclusively on all my machines. This has the Centroid Acorn Pro license which allows, amongst others, rigid tapping, threading, full conversational CAM etc. More info about these boards can be found here -

The machine itself is in reasonable condition but looks a bit tatty. Ive just painted the drip tray as this had lost most of its paint over the years, looks better already. The rest could be painted without too much of a fuss.

The machine runs with an encoder which allows for tapping / threading etc. I have also replaced the spindle motor which burnt out which, from memory is a 2.2KW unit, similar what was on before.

The existing gearbox setup still works, Centroid is currently setup that I only use 1 ratio and with a VFD gives me from 0 to 2500 RPM. There is a higher gear and other gear ratios which can be programmed into Centroid to allow for gearing.

The bed looks fairly good, normal wear and tear marks. I took a dial guage and went across the bed, sweeping from one side to the 'V' on the other and was finding no more than 0.02mm of difference, likely small highspots which could be stoned out.

The stepper motors are fairly old but work OK. These could easily be upgraded for something more powerful / larger. The Stepper power supply is a Leadshine 70V unit, loads of grunt there, connected to some good Leadshine Stepper drives (EM806 from memory). The Z ballscrew is 16mm, I think X is similar.

The lathe had a small ATC but I found that it couldnt deal with load under parting, so have removed this and installed a Dickson QCTP and comes with 4 holders. Any new owner could easily swap this for the QCTP of their choice as needed. The machine weighs circa 600 kg, was delivered to me on a pallet, so is fairly easy to transport.

The lathe has a Pratt Burnerd 3 Jaw chuck, showing its age but certainly works OK. The through bore size for the Harrison is 39mm, there is no restriction in terms of access via the side of the machine as the encoder is mounted off a shaft adjacent to the main spindle.

There is a full flood coolant system which works. I just need to reconnect the VFD to power the small 3 phase motor for the coolant. It could run on single phase however the small VFDs are fairly cheap and controlled via the software without issue.

The machine has only had 2 home switches previously connected which Ive removed since installing the QCTP. I'm happy to reinstall these and wire up new limit switches. Ive got some switches, need to look for ideal mounting positions for them. The wiring will be tidied up once the 2nd VFD has been reinstalled for the coolant pump and the wiring completed for the limit / home switches.

Summary, good solid basic level toolroom Harrison M300 with CNC ability. Connected to the awesome Centroid Acorn system, comes with all licenses, a small Dell PC to run the system, preconfigured and working. It will also come with a 22 - 24inch monitor, mounted on a stand which will be included.

I'd like to sell for circa £3K which includes all the bits, PC, Centroid etc. The Windows 10 is not activated and would need a license (for it to be legal). Centroid only runs on Windows 10. You can also get an MPG for this however Ill include a shuttle controller which can be used as a MPG as this makes controlling the machine easier than via mouse / keyboard / touchscreen.

I'd also be open to offers for other hardware / tools / machines or a part trade, cash either way. Things I am looking for (no order of preference or priority) - these can be 3 phase as I can probably run most things off a VFD:

Surface Grinder
Radial Grinder (machine or mountable system)
Bench Grinder
Belt Grinder
Plasma cutter
Laser cutter
Horizontal Bandsaw
Wood Tablesaw
Plate bending machine
Pipe bending machine
Spark / Wire eroder

Ill upload some pics shortly. I am based in West London (near Uxbridge), only a few miles from the M40 / M25 crossover junction.
Price: £3,000.00
Collection or Delivery
Charl Tintinger
Or Swap - Harrison M300 CNC Lathe - Centroid AcornOr Swap - Harrison M300 CNC Lathe - Centroid AcornOr Swap - Harrison M300 CNC Lathe - Centroid AcornOr Swap - Harrison M300 CNC Lathe - Centroid Acorn


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