Understanding ISO/TR 14179-2: Thermal Load-Carrying Capacity of Gears

A. Determination of Power Losses ($P_V$)

The document breaks down efficiency losses with granular detail:

Analytical Calculation: Offering an alternative method to calculate individual components of power loss and heat dissipation for all gearbox components.

  1. ISO Online Shop – www.iso.org (search for "ISO TR 14179-2")
  2. National standards bodies (e.g., ANSI, BSI, DIN, JSA, SAC)
  3. Engineering platforms (IHS Markit, Techstreet, SAI Global) – often faster for PDF downloads.
  4. University libraries – many have institutional subscriptions to standards databases.
  5. Company standards department – if you work in an engineering firm.

Software and Tools That Implement ISO TR 14179-2

Manually calculating thermal capacity with the PDF is tedious. Most modern gear design software includes this standard: