Key technical requirements for EV gears & transmissions
Electric vehicle transmissions place specific demands on gears and precision components, including:
- High torque and rotational speed: gears must withstand high and rapidly available torque while operating at elevated rotational speeds.
- Low NVH: precise gear geometry, surface quality and controlled manufacturing are essential to limit gear whine and other transmission-related noise.
- Efficiency and weight: compact, lightweight components must minimise mechanical losses while maintaining the required load capacity and durability.
- Surface and material performance: gear materials and heat treatments must provide the required hardness, fatigue resistance and wear behaviour under EV operating conditions.
- Dimensional accuracy: tight control of gear geometry and manufacturing tolerances is required to ensure consistent meshing and transmission performance.
CIMA combines precision gear manufacturing, machining and in-house heat treatment to produce components according to the specific requirements of each EV transmission project.