The stator and rotor both are the parts of the electrical motor. The significant difference between the rotor and the stator is that the rotor is the rotating part of the motor whereas the stator is the stationary part of the motor. The other differences between the stator and rotor are shown below in the comparison chart.
The stator frame, the stator core and stator winding are the parts of the stator. The frame supports the core of the stator and protects their three-phase winding. The stator core carries the rotating magnetic field which induces because of the three-phase supply.
The rotor is situated inside the core of the stator. Squirrel cage and the phase wound rotor are the types of the rotor. The rotor winding is excited by the DC supply. The field winding induces the constant magnetic field in the core of the rotor.
Content: Stator Vs Rotor
Machine-Name Description; Rotor slotter for turbine (FCT) Dedicated milling machines for turbine rotors made-up of: one or two opposite unit milling machines, one workpiece line with two hydrostatic steadies for rotor rest, one high precision divider for high accuracy angular indexing. The amount of space available for the rotor slot is depend-ent on the stresses in the rotor teeth— the more area used for the slot, the higher the tooth stresses. The insulation system must be suffi-cient to protect the winding from ground faults and turn-to-turn shorts throughout the operating envelope.
Rotor Slot Milling Machine Harbor Freight
Function and features One operation, milling face, centre drilling and chamfer; Hydraulic self centring jigs; Multi spindle variants are available. Please see our Z82 range; Can be manually loaded or robotic pick and place options available; Full turn key packages are available on all our machines.
Comparison Chart
| Basis for Comparison | Stator | Rotor |
|---|---|---|
| Definition | It is a stationary part of the machine | It is the rotating part of the motor. |
| Parts | Outer frame, stator core and stator winding. | Rotor winding and Rotor core |
| Supply | Three-phase Supply | DC supply |
| Winding Arrangement | Complex | Easy |
| Insulation | Heavy | Less |
| Friction Loss | High | Low |
| Cooling | Easy | Difficult |
Definition of Stator
The stator is the static part of the motor. The main function of the stator is to generate the rotating magnetic field. The stator frame, stator core and stator winding are the three parts of the stator. The stator core support and protect the three-phase winding of the stator. High-grade silicon steel stamping makes the core of the stator.
Definition of Rotor
The rotating part of the motor is known as the rotor. The rotor core and the rotor winding are the part of the rotor. The winding of the rotor is excited by the DC supply. The squirrel cage and the phase wound are the types of the rotor.
The core of the squirrel cage rotor is made of the cylindrical iron core. The core has a semi-circular slot on their outer surface on which the copper or aluminium conductors are placed. The conductors are short-circuited at the ends with the help of the aluminium or copper rings.
Working of Rotor & Stator
The stator generates the rotating magnetic field because of the three-phase supply. If the rotor is in the standstill condition, then the electromagnetic force induces in them because of the electromagnetic induction phenomena.
The electromagnetic induction is the phenomena in which the emf induced in the current carrying conductor because of the variable magnetic field. The current induces in the rotor which causes the rotor to move.
Key Differences Between Stator and Rotor
- The stator is the stationary part of the machine, whereas the rotor is the movable part of the machine.
- The stator core, stator winding and the outer frame are the three parts of the stator whereas the rotor core and field winding are the parts of the rotor.
- The three-phase supply is given to the winding of the stator. The rotor is excited by the DC supply.
- The winding arrangement of the stator is more complex as compared to the rotor.
- The stator winding is highly insulated because high voltage induces in it. Whereas, the rotor has low insulation.
- The size of the stator winding is large for carrying the heavy current as compared to the field winding.
- The cooling system of the stator is good as compared to the rotor Because the stator is stationary.
- The friction loss is less in the rotor as compared to the stator because of its low weight.
Conclusion
The static part of the machine is known stator. And the rotating part of the machine is known as the rotor. The rotor is placed inside the core of the stator. The three-phase is supplied to the stator winding which produces the rotating magnetic field. The rotor rotates inside the rotating magnetic field. Thus, an emf is induced because of the interaction of magnetic field of rotor and stator.
Related terms:
EX Series - Helical Milling Machines
Holroyd EX Series CNC rotor milling machines have earned worldwide recognition for their high speed, accurate precision and unbeatable build quality. Our standard range of Holroyd EX series high speed CNC rotor milling machines can cut rotor or worm helix profiles in blanks up to 850mm (33') diameter.
Rotor Slot Milling Machine Tools
If 850mm (33') is still too small we can build a Holroyd 10EX miller that can perform the same functions on blanks exceeding 1m (40'). And all Holroyd EX rotor milling machines will deliver the same class leading performance and repeatability due in no small part to advanced technology. This includes our development of on-machine probing and a dry milling technique plus unrivalled build quality.
The flexibility of our EX series milling machines means that they are equally efficient at producing complex components with helical screw profiles and gear parts such as worm shafts. In all manufacturing environments they will improve productivity through a combination of high-speed operation, powerful menu-driven touchscreen CNC programming, quick-change tooling, high power spindles and unbeatable rigidity.
Key Features of the EX Series:
- Designed for vastly improved productivity
- Powerful, menu-driven touch screen CNC programming
- Quick chance tooling for accelerated set-up
- High-precision rotational accuracy
- High-efficiency, high-speed milling spindle
- Outstanding metal removal rates
- Hollow spindle option for longer components
- Range of chucking and work-holding options
- Engineered for complete integration with automated parts handling systems
The EX standard range includes:
- 1EX for parts up to 150mm (6') diameter
- 2EX for parts up to 250mm (9') diameter
- 3EX-R for parts up to 350mm (13') diameter
- 5EX for parts up to 550mm (21') diameter
- 6EX for parts up to 650mm (25') diameter
- 8EX for parts up to 850mm (33') diameter
Also available:
- 10EX for parts exceeding one metre (39') diameter