What does "series 4P" mean?
4P, that is, the 4 poles, is the series of motors.The number of poles reflects the synchronous speed of the motor, and the 4 pole synchronous speed is 1500r/min.And the series of reducer, just see how many drive it has. A pair of meshing gears for the first stage transmission, the first stage transmission is through a deceleration, the two stage transmission is through 2 times slow down.Reducer in the prime mover and working machine or actuator between the matching speed and torque transfer role, reducer is a relatively precise machine, the purpose of using it is to reduce speed, increase torque. According to transmission series can be divided into single and multi-stage reducer; gear wheel factory according to the shape can be divided into cylindrical gear reducer, bevel gear reducer and bevel gear-cylindrical gear guide wheel reducer; according to the arrangement of transmission can be divided into expansion, split and same shaft type speed reducer. The reducer is a kind of independent parts enclosed by a rigid shell gear, worm gear, gear - worm gear reducer, commonly used as a prime mover and work machine. It plays an important role in matching speed and transmitting torque between prime mover and working machine or actuator, and it is widely used in modern machinery.
Synchronous motor speed =60* frequency / pole logarithm (China's power frequency is 50Hz),Asynchronous motor speed = (60* frequency / pole count) * (1- slip)In addition, the motor of the same power, the greater the speed, the output torque is small.
You are not clear, I doubt you say the motor number, that is, the most common 4 pole motor output speed of 1450.If it is a series of reduction gears, it means that the four speed reduction is usually a big speed ratio, but generally not as you say
