Metzingen, Germany
M 3-40-12


Power (kw):
3 spindles, in-process measuring
Taper (iso/mt):
Drilling-Ø (mm):
Honing machines


G E H R I N G (Germany)
3-Spindle Vertical Honing Machine
Model M 3 – 40 - 12 Serial No. 720-3837
Year 1986
Honing Ø, normal / maximum 2.5 - 12 / 40 mm
Honing depth, approx. 4 – 40 mm
Max. spindle stroke 40 mm
Distance between spindle and column 300 mm
Table size / Ø 750 mm
Height of table above floor 1,100 mm
Spindle speeds, infinitely variable 800 – 4,000 rpm
Stroke speed, infinitely variable 380 double stokes/min
Spindle drive 3 x 1 kW
Total electrical load 15 kW – 380 V – 50 Hz
Weight 5,000 kg
Accessories / Special Features
* Machine is set up for precision honing of a valve body for automobiles, approx. Ø 12 mm x height 40 mm; with a blind hole approx. Ø 8 mm x 20 mm.
Machine consists of:
* BOSCH SPS Control for programmable working process and Cylindromatic “S” Control .
* 8 Station Rotary Table , Model DH 750-45, Ø approx. 750 mm.
* Workpieces are loaded via a chute. Outside the table area is a duburring station, a pre-measuring station, and a reversing station.
* Pre-honing , followed by measuring station.
* Intermediate honing, followed by measuring station.
* Finish honing, followed by measuring station.
* Workpiece unloading device. Good workpieces are separated from faulty ones.
* Mechanical Automatic Honing Heads , Model MAZ-8-42 for expansion of honing tool.
* The three measuring stations work by an air measuring mandrel, which moves into the bore hole and transfers the appropriate correction values to the fine adjustment control of the spindle.
* Complete coolant device with band filter. * Separate switch cabinet.
* Separate hydraulic unit, etc.
Condition : Good to very good. Machine can soon be inspected under power.
Delivery : Ex stock, as inspected.
Payment : Net, after conclusion of contract.