Hi friends,Can any one help me to find the electric motor with 40HP and 500RPM for my project. RPM upto max.1000RPM is acceptable. Please help me. The motor should be available in INDIA. Thanks in advance :)
AC motors in that HP range are usually available as three phase, at RPM's of 1200, 1800, 3600. 1800 RPM is standard speed, so that will be the cheapest. To get down to 500 RPM, you have several options: Reduce the speed using pulley ratios. This is the cheapest if your application will accept it. Use a bolt on gear reducer. This is the best and most popular solution if you only need one output speed. Both the solutions above give you the advantage of reducing the motor HP to around 15 HP since you are reducing the speed but tripling the torque to that of above 40 HP. At 15 HP, you can switch to single phase if you have too, but stick with 3 phase if you can because they are much more efficient motors. Other options which give you variable output speed are an AC motor speed control (very expensive), or switch to a DC motor and controller (very, very expensive, if they even make them that big.) Search Baldor, Emerson, Lincoln or Grainger for motors. See Emerson, Grove or Boston for gear reducers, pulleys. See Gates for belts.
