The cold-formed components we manufacture for the auto industry demonstrate superior strength and precision

At AIKOKU ALPHA, we maintain a powerful commitment to the precision of our cold-formed parts, producing inner races with grind-free track grooves, crowned sun gears, precision pinion shafts, and more.
We are proud of our environmentally friendly near-net shaping technology, which we use to satisfy the global demand for ever-more sophisticated components with higher added value.

AIKOKU ALPHA components are used in automobile drive trains and steering systems.

Spline shafts
Pinion shafts
Sun gear shafts
Inner CV joints

Products

  • Inner CV joints

    We make 20% of the world’s automotive inner CV joints.

  • Spline shafts

    Our spline shafts have superior strength and create minimal backlash against interconnected parts.

  • Cold-formed gears
    (Pinion shafts)

    AIKOKU ALPHA is celebrated as the first manufacturer to succeed in mass-producing a cold-formed pinion shaft while retaining superior gear precision.

  • Cold-formed gears
    (    Sun gears)

    Our cold-formed sun gears (helical gears) are renowned for their smooth forging surface and high tooth surface fatigue strength.