Performance Spectrum 2021
We possess the knowledge in the production of parts by cold and hot metal working, heat treatment, galvanizing and assembly:
• Debiting
• Milling and centering of shaft ends
• Turning on soft (before heat treatment) and hard (after heat treatment) surfaces – up to 250 mm in diameter with or without driven tools
• Turning and internal grinding
• Drilling, reaming, threading
• Percussion marking
• Laser and DMC marking (Data matrix code)
• Inscription according to the template
• Simple or complex milling processing
• Broach grooves (up to 60 mm in diameter) and wedge channels
• Rolling outer grooves
• Rolling milling by straight or inclined cylindrical teeth, or cylindrical conical and grooves
• Rolling mortar by straight, outer or inner cylindrical teeth and grooves
• Tooth adjustment by grating, plastic deformation, or with abrasive bodies / particles
• Deburring
• Periere
• Press parts
• Surface protection before the cementing operation
• Heat treatments: cementation, nitrocarburization, CIF hardening (High frequency current hardening), strain relief
• Control on installations for the detection of microcracks (with fluorescent solutions)
• Sanding of finishing / cleaning and resistance to the foot of the tooth
• Pinion / axle straightening
• Toothache
• Inner rebuke
• Grinding by rolling straight or inclined cylindrical teeth, or cylindrical-conical, with or without changes on profiles and flank lines
• Internal rectification
• External rectification
• Flat grinding
• Grinding centering holes
• Washing and drying parts, with or without a degree of cleanliness
• Demagnetization of parts
• Manual installation, or on dedicated stands
• Protection of surfaces against oxidation – preservation by immersion, or in preservative mist
• Sharpening tools


Quality Management →

Descoperă știința din spatele produselor noastre

Star Transmission and Star Assembly are an important part of the global powertrain production network of Mercedes-Benz cars.
Transmissions for Mercedes-Benz are assembled in Sebeș.

Media Gallery → STC

The Cugir location hosts the production of wheels, axles, high pressure pipes and mechanically machined components for engines, transmissions and steering systems, as well as a technology center where, among other things, prototypes are produced.

Media Gallery → STA

In Star Assembly automatic eight-speed dual-clutch gearboxes, as well as nine-speed transmissions are assembled for Mercedes-Benz.

The production of the 9G-Tronic nine-speed automatic gearbox began in 2016, the 8-speed 8G-DCT in 2019, followed by the hybrid version in 2020.


Our transmissions operate in a silent way, and this is not happening by chance;
is due to the accuracy with which the gearbox components are made.

In 2018, the production facility dedicated to the remanufacturing of transmissions and electrohydraulic control units took place. In the production process, the remanufacturing of parts leads to a considerable saving of raw material and energy, the balance between technological desolation and natural resources being important to us.


9 speed transmission




8 speed transmission


8 speed, hybrid transmission


Cugir’s production portfolio includes the following parts / components:

1. Gears
2. Pinions
3. Axes – landmarks with revolutionary surfaces
4. Landmarks with complex geometries
5. Chain tensioner
6. High pressure pipes

Production of high pressure pipes:

• Plastic deformation;
• Relaxation;
• Bending;
• Labeling;
• Inductive welding (brazing);
• Leak check;
• Ultrasonic washing;
• Clamp assembly.

Technology Center:
Prototypes:

• Debiting
• 3 and 5 axis milling
• Turning
• Rectification

Small series production:

• Turning
• Milling
• Rectification