OPENTECHNICAL PUBLICATION
OT-2026-000000710

Logarithmic hollow shaft speed reducer

Published: 2026-09-15T19:03:17.179137Z
Permanent URL: https://opentechnical.org/p/OT-2026-000000710
Categories: Industrial Motion & Power Transmission > Rotary Motion

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ABSTRACT

A logarithmic hollow shaft speed reducer comprising a compact, modular
two-stage rotary system with independently selectable coupling paths. The
first stage produces coaxial outputs directed to either the ring, sun, or
carrier of a standalone second-stage differential planetary gear. This
architecture enables multiple torque-speed modes—high-speed/low-torque,
balanced, and high-torque/low-speed—without altering drive element
configuration. The speed reducer's modularity and clarity support
cost-effective manufacturing and flexible deployment.

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OpenTechnical publication OT-2026-000000710
Published 2026-09-15T19:03:17.179137Z
https://opentechnical.org/p/OT-2026-000000710