5. Transmission and Drivetrain Components

What it is: Gears, shafts, housings, and clutch assemblies require part numbers, heat-treatment batch codes, and assembly identification.

How lasers are used:

• Fiber laser engraving on hardened steel components
• Rotary attachments for cylindrical parts (shafts, bearing races)
• 30–50W fiber for deep marks on hardened surfaces
• Annealed marks on finished gear teeth (where surface integrity is critical)