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MWM Schmieranlagen official partner of Step-Tec in Italy

Starting from 1st September 2015 MWM Schmieranlagen is the official representative and technological partner of the Swiss brand Step-Tec in Italy.

Step-Tec AG has been developing and producing high speed motor spindles (HSC High Speed Cutting), high performance motor spindles (HPM High Performance Machining) and precision sub assemblies for machine tools since 1995. Since 2000 is part of the group GF (Georg Fischer). Today Step-Tec, with productive headquarters in Luterbach (Switzerland), builds some 70 different types of spindles in diameters ranging from 90 mm to 320 mm, covering a performance range of 1 to 82 kW, that deliver torques of up to 1200 Nm on its most powerful spindle. Both, induction motors with speeds up to 54.000 rpm and synchronous motors with highest power density and agility are available in our spindles depending on the application. The correct selection of a spindle’s speed, power and torque characteristic is essential for economic machining and an optimum working life.

Step-Tec has a broad experience in precision assembly, as well as in the design and layout of direct drive and bearing technology. Step-Tec facilities are equipped with all what is required for prototype manufacturing and testing. Step-Tec offers to participate as an engineering and manufacturing partner for sub-assemblies to the machine tool industry. Repair and service facilities are in Luterbach, Calgary for America (specified portfolio) and Changzhou for China (specified portfolio).

The main markets covered by Step-tec products are:

  • Mold & die
    • 3D mould cavity
    • mould frame components
  • Production
    • Automotive (motor housing, gear-box housing, gear, constant velocity joint, etc.)
    • Turbo machinery (energy, aeronautic etc.)
    • Precision machining (medical, dental, hydraulic, pneumatic, watch-making etc.)

Step-Tec product portfolio consists of:

  • 65 % milling spindles
  • 5 % project specific turning spindles
  • 5 % project specific grinding spindles
  • 25 % proprietary machine tool sub assemblies for gear milling and honing

Moreover Step-Tec offers a range of services to its customers, among which:

  • SEP – Spindle Exchange Program: 24 hour dispatch time for specified exchange spindles
  • SFR – Spindle Factory Repair: 10 day turnover time for spindle repair (excl. transport)
  • SOR – Spindle On Site Repair: repair of minor damages at customer’s site through either the after sales service of the machine manufacturer or the maintenance personnel of the machine operating company. The Step Tec Service Academy offers efficient trainings for after sales service personnel of the machine manufacturer or the endusers maintenance staff.
  • Service Academy: Training for maintenance staff (machine tool manufacturer or end-user)

Product Highlights

High Speed Cutting Spindles

  • 36.000, 42.000, 50/60.000 rpm -> HSC
  • HSK-E50, HSK-E40, HSK-E32 -> best possible axial repeatability of tool position
  • installed base 42.000 rpm spindle: over 3.900
  • unmatched torque / speed ratio -> rigid tapping
  • closed loop – vector controlled -> rigid tapping
  • Opti-COOL technology as a standard for even temperature distribution in contact surface
  • COOL-CORE technology available for 42.000 rpm spindle for highest thermal repeatability
  • repeatability of running temperature 0.4°C after spindle stop* -> easy to compensate
  • repeatability of running temperature 0.8°C over range of 100 spindles* -> easy to compensate
  • air-oil mist lubrication of bearings -> high working life at unlimited operation at high rotational speed
  • no oil leakage -> clean operation
  • intelliSTEP: sensor package available on all spindles

* reference: 42.000 rpm spindle

High Performance Cutting Spindles

  • 10.000, 12.000, 15.000, 24.000 rpm -> HPC
  • HSK-A63, HSK-A80, HSK-A100 -> high radial and axial stiffness, other interfaces possible
  • hydraulic preload available on selected models
  • Spindle Shaft Interlock (Hirth-System: 1°) available on selected models -> turning operations
  • excellent weight / performance ratio -> integration into swiveling heads or power reduction of linear motor axis drives
  • special small diameter design for automotive production with minimum chip-to-chip time and minimum maintenance
  • special design for high output production lathes
  • intelliSTEP: sensor package available on all spindles

intelliSTEP

  • integrated sensor technology for acceleration, temperature, axial movement etc.
  • operating parameter recording and storage
  • data for process optimization
  • increased tool service life
  • increased spindle service life
  • better surface finish of workpiece
  • Profibus or RS 485 connection to CNC or PC

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