The Hub City HERA (High-Efficiency Right Angle) gear reducer is a direct replacement for worm gearing and offers 90% operating efficiency, which means it converts power from an electric motor into mechanical power with only a ten percent loss of energy.

https://www.regalrexnord.com/brands/hub-city/products/hera

WHY HERA® GEAR DRIVES?

• Up to 40% more efficient than standard worm gearing.
• Dimensionally interchangeable to up to 11 sizes of worm
  drives for inventory consolidation.
• Available with a variety of Marathon® premium efficiency
  motors for even more energy savings (recommended).
• Bronze bushing quill liner to prevent fretting and for easy
  motor removal (56C & 143TC).
• Increased torque density and efficiency allow for
  downsizing of units and motors.
• Filled with PAG460 premium synthetic lubricant for
  enhanced efficiency (Meets USDA H1).
• Viton* double lip seals protect against leaks at higher
  temperatures.
• Longer life expectancy than that of standard worm
  gearing.
• Rapid payback – Up to $550 savings per year with each
  increment of motor HP.
• Three year warranty.
• Models HERA35 and HERA45 also available in stainless
  steel.