It represents the ratio between the input speed (Diesel engine speed) and the output speed (utilizer speed).
Ratios lower than 1 indicate a gearbox performing as speed increaser, higher than 1 as speed reducer.
Max input torque Me
It is the maximum torque wich may be transmitted on input, corresponding to a theoretical unlimited gear life and to a bearing life (L10) of 5000 hours at least, with an input speed of 2000 RPM.
For clutch/gearbox combination, the max input torque may be limited by the clutch capacity.
Max input speed Ne
It is the maximum speed at the input shaft. For clutch/gearbox combination, the max input speed may be limited by the clutch.
Max power P
It is the maximum power that may be transmitted under normal conditions, without an oil cooling system. The values shown are only indicative in so far as the external factors create much influence, such as: air temperature, possibility of air circulation, environment conditions.
When power is bigger than the listed value a cooling system is necessary.