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While Part 1 focuses on rating gear drives at a fixed equilibrium temperature (95 °C), offers a more flexible method to determine the actual power loss and heat dissipation under practical operating conditions. Key Objectives
While (ISO/TR 14179-1) is based on an American proposal (AGMA) focused on a fixed 95 °C sump temperature, Part 2 is based on a German proposal that utilizes a more flexible iterative heat balance model. Go to product viewer dialog for this item. iso tr 14179-2 pdf
Accessing the official requires a legitimate purchase from an authorized standards vendor, but the investment is modest compared to the cost of gearbox failure caused by overlooked thermal constraints. For those applying the standard in production engineering, software tools such as KISSsoft, Romax, and TBK offer automation and integration with existing design workflows.
The primary objective of the document is to establish a between the power lost (converted into heat) during operation and the heat dissipated by the gearbox housing into the environment. By balancing these two sides of the equation, engineers can accurately predict:
Engineers use the standard to assign realistic power ratings to gearboxes, ensuring that a unit specified for 100 kW, for example, can indeed transmit that power continuously without the oil sump rising to damaging temperatures. This is essential for applications like conveyors, mixers, mills, and crushers where uptime is critical. Are you selecting a based on expected thermal limits
Many practical thermal rating exercises draw from both parts of the standard. Part 2, however, is often the document of choice when more accuracy or a more comprehensive analysis is required, particularly for non-standard housing geometries, forced cooling, or when in-situ measurements can be performed.
, titled "Gears — Thermal capacity — Part 2: Thermal load-carrying capacity," is a technical report published by the International Organization for Standardization.
: Determining power loss and heat dissipation on original gear units under real-world conditions. Go to product viewer dialog for this item
This comprehensive guide explores the core methodologies of ISO/TR 14179-2, its practical applications in mechanical engineering, and how to source official PDF documentation. What is ISO/TR 14179-2?
ISO/TR 14179-2:2001 is a published by the International Organization for Standardization (ISO). Its full title is Gears — Thermal capacity — Part 2: Thermal load-carrying capacity . First published on August 9, 2001 , and reaffirmed as current on October 11, 2013 , it remains an active and internationally recognized standard.
The standard is formally titled: It was published on August 9, 2001, spans 34 pages, and is available in both English and French. The document remains in current status and was last confirmed by ISO on October 11, 2013, with reconfirmation scheduled for 2026.
: Calculates the expected gear oil sump temperature for any given transmitted power.
This method utilizes base thermal capacities derived from standardized testing. It applies a series of modification factors to account for real-world variables like ambient temperature, air velocity, altitude, and duty cycles. It is often favored for catalog ratings and standard industrial applications. The Calculation Framework of Part 2