Face-to-face comparison with competitor’s products is not easy, because there is no standard way of presenting data.
When a gearbox is properly dimensioned for an application, the theoretical gearing lifetime is unlimited because the film of lubricant between the gears is protecting them from working "metal-against-metal", and because fatigue breakage will not happen under such conditions if they were calculated right.
The graph below illustrates how lifetime of a gear stage evolves together with the input torque. This graph is for information only, using the ISO 6336-2 calculation methodology, and does not take bearings or seals into consideration.
You may notice how sharp the decrease of lifetime is, after nominal torque is exceeded.
It should be noted that a planetary gearbox’s lifetime depends as well on seals, lubricant or bearings condition, and it can be affected by fast variations of torque or reversals (refer to the "application factors" section).
Reckon's published data results from dedicated software calculation, and products were tested in real-life conditions. We chose to follow the ISO 6336-2 calculation norm, as we consider it is a very safe method (it is used in the gear calculation of European space mechanisms). Our data is conservative, however it is important to note that indicated torque ratings or lifetimes can be affected by different factors:
As a conclusion, any published data should always be considered indicative because the data precisely corresponding to your application just does not exist.
Our engineers will give you an evaluation of your gearbox’s lifetime based on your application's real duty cycle and working conditions, using software calculation.
Find Reckon products in the 13th International Machine Tools located in the Exhibition Chennai Trade Centre, Chennai, Indiafrom 21st to 25th June 2018
In addition to the Ultimate range, Spirit is dedicated to weakly dynamic applications. This gearbox offers a rotating flange output that will save you space. Its price is very competitive thanks to the use of a straight toothing.
Access was developped to offer the lowest price on the market of low-backlash planetary gearboxes. Yet it features carburized and ground planets, 5 arc-min backlash, monobloc housing, NTN bearings and probably the best lubricant on the planet : our usual Sumico gear grease!