Repair services

ZZN Transmission Plant in Stalowa Wola provide repairs services of powertrain components, mainly

  • gear boxes and power transmission for wheel loaders,
  • powertrains, steering drives and final drives for crawler dozer.

The company has high-quality universal test stands and test equipment allowing the testing of all type power units. Experienced and qualified staff guarantee the highest quality of service.

If you are interested in our offer please contact us.

Machining Services

We provide machining services using the following machines and equipment:

conventional lathes: max diameter – 800 mm, max length – 1500 mm
CNC lathes: max diameter – 1000 mm, max length – 450 mm
conventional boring machines: max diameter – 700 mm, max length – 800 mm
vertical lathes: max diameter – 1250 mm, max length – 550 mm
vertical and horizontal milling machines: milling max overall dimensions 1200 mm x 800 mm x 600 mm
planer mills: milling max overall dimensions 3000 mm x 1500 mm x 1000 mm
planer grinder with rectangular table and vertical spindle max overall machining capability 800 mm x 1800 mm x 600 mm
CNC boring machines and CNC flexible machining centers:

surface and groove slot milling using interpolation
hole boring
drilling and threading
surface machining – internal and external surfaces
max overall dimensions 1000 mm x 1000 mm x 1000 mm
accuracy class acc. to DIN 7

Heat treatment

Endothermic carburizing with quenching or press quenching

  • PKMH Elterma chamber furnace – heating chamber dimensions 900 mm x 820 mm x 1200 mm
  • ALLCASE Surface chamber furnace – chamber dimensions 914 mm x 914 mm x 1828 mm
  • RDLEs-3 Aichelin rotary-hearth furnace – pallet dimensions 760 mm x 660 mm x 900 mm
  • KSES Aichelin 90/90 process line – pallet dimensions 900 mm x 900 mm x 900 mm
  • quenching presses: GLEASON 36 – max diameter 914 mm, GLEASON 537 – max diameter 714 mm

Induction hardening

  • AEG hardening device for gears with a max diameter of 900 mm
  • FDF hardening device for gears and shafts with a max diameter of 1000 mm and a max length of 1200 mm (power 600 kW, frequency 8 kHz)
  • GSI-50 generator with feeder 1000 for the hardening of small module gears and shafts with a max diameter of 1000 mm (power 50 kW, frequency 440 kHz)

Heat treatment and volume hardening

  • soak, chamber and salt bath furnaces
  • furnace possibility of heath treatment of components with a max diameter of 660 mm and a max length of 1200 mm