Pump over gears are designed for connecting gear pumps to farm tractor power-take-offs. Input speed of power-take-offs is 540 R.P.M. and should be adjusted to proper running speeds of hydraulic pumps. Different input speeds can also be suitable, provided that over-gear output speed does not exceed 3000 rpm. Hidros offer serie 60000 pump over gears suitable to use with group 20 hydraulic pumps.