1. Introduction
The new energy motor shaft is a core transmission component in new energy systems—powering electric vehicles (EVs), wind turbines, energy storage generators, and hybrid electric vehicles (HEVs). Unlike traditional internal combustion engine (ICE) vehicle shafts, which primarily transmit moderate torque at low speeds, new energy motor shafts operate under extreme conditions: high rotational speeds (up to 20,000 RPM for EV motors), fluctuating torque loads (common in regenerative braking systems), and long-term exposure to moisture or temperature variations (e.g., under EV chassis or in offshore wind turbines). These demands require the shaft to possess exceptional mechanical strength, dimensional precision, and corrosion resistance.
With the global new energy industry expanding rapidly—EV sales are projected to reach 60% of global car sales by 2030, and wind power capacity is expected to double by 2030—traditional motor shaft manufacturing processes (designed for low-volume, low-precision ICE components) are struggling to meet the industry’s needs. Challenges such as high material waste, inconsistent precision, and slow production cycles have become bottlenecks for manufacturers. This article explores the unique requirements of new energy motor shaft manufacturing, identifies key challenges in current workflows, and proposes targeted manufacturing strategies to enhance quality, efficiency, and sustainability.
2. Key Requirements and Current Challenges in New Energy Motor Shaft Manufacturing
New energy motor shafts are not a “one-size-fits-all” component; their design and manufacturing vary by application (e.g., EV traction motors vs. wind turbine generators). However, all share core requirements—and face common manufacturing challenges.
