This is the Maho Sk250 as I bought it. It was on sale on ebay, but I noticed it to late. The buyer was willing to resell it to me. It came from Germany Remscheid. A tag on top stated that is was owned by:
Dr.Ing.h.c.F.Porsche KG.
Nr. 30031
The main reason to buy it was the low price and the included shaperhead. The outside looked awfull, the inside was unknown. Beside, I bought on Ebay another item by accident which had to be collected personally. This location was quite near to Remscheid so I had to make the trip anyway
For the ones interested in the hauling: I placed it on a flat trailer that was hooked to an normal sedan (net. weight 1500 kg, max. trailer weight 1350 kg). My biggest concern was the forward sliding in case of heavy breaking. I placed 2 pretty heavy straps to the back to fasten it (one at the top and one in the middle). There was one strap to the front as a counter pressure. To avoid sideward sliding i placed one strap around the bottom. It was a 300km drive home. One even roads no problems at 90 km/h ( I once drove 110 km/h without noticing it), on uneven roads the trailer behaved bumpy and I had to slow down to 70 km/h. The machine was loaded onto the trailer with a chainhoist (lucky me, not bringing a closed van) The machine was unloaded with a forklift.
Machine: MAHO Universal-Werkzeug-u.Gesenkfrasmaschine. SK250
Manufacturer: Prazisionsmechanik u. Maschinenbau Mayr, Hormann u. Cie., K.G. Pfronten-Steinach/Allgau
Machinenumber: 1388
Max. cutterdiam : The speed conversiontabel goes up to 90 mm diam
X-travel 380 mm (360 mm on scale)
Y travel 180 mm ?
Z travel knee 300 mm ?
Spindle 70 mm ?
Motor:
1400 rpm 2,0 kW
700 rpm 1,2 kW
V-belt motor: Optibelt VB SC plus
type: B1440 Ld/17x1400 L1 B55
vertical spindle speeds:
1400,1060,800,710, 600,530,450,
400,335,300, 250,224,190,170,125,95
horizontal spindle speeds:
1000,750,500,375,560,425,315,236,
180,132,280,212,160,118,90,67
The inspection of the "new" machine gave some unpleasant
results. In short: the whole transmission is a disaster.
-Drivebelts: are missing and wornout, belt pullys damaged, splines missing.
-Main gearbox: two gearing wheels very bad, the rest a lot of freeplay.
-The backgear: gearingwheels acceptable, but the shifting mechanismen
was fiddly.
-Headstockgearing: completely worn out.
-Horizontalspindle: rather good.
-Verticalspindleunit: casting broken at clampingpoint (verticalspindle
cannot be clamped).
-Collet: little cracks around the entrance.
-Wiring: fiddly (hazardous at connectionpoint with the motor)
-The vice is ot an original MAHO-vice
-The ram appaers to be in acceptable condition
Less important defects: handwheels broken and ugly repaired, tabletop very scorn, big chunk broken out of the front.
There has been an X and Z powerfeed in the past, but most of it is removed.
to replace the transmissionline with only an VFD-controlled motor on the top.
The new transmission line can connect
directly to the driveshaft that's already present at the side of the headstock.
The original belts are removed in that case.
