MAIN PARTS FOR DIFFERENT TYPES OF MOTORS
For a standard AC motor (squirrel-cage)
- Cooling fan
- Fan cover
- Drive end End-shield
- Non-drive end End-shield
- Drive end Flange (Flange shield)
- Terminal Block/Terminal strip/Terminal board/Terminal Bar
- Terminal Box (PVC/Metal Sheet/ Cast Iron)
- Terminal box top cover
For Slip-ring motor, additionally
- Slipring unit
- Carbon brushes
- Brush Holders
- Brush holder spindle
For DC Motors
- Commutator
- Filer unit
- Filter unit with Blower
- Filter unit with Blower and AC motor
- Other parts like Body, Shaft, Rotor with Shaft Oil seals, Bearings, O rings, Force cooling unit and FLP studs would also be available
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You may be having Motors of different makes in your manufacturing unit. Here are the few points worth considering
Minimum information required to float an enquiry
- Frame size with Prefix and suffix (e.g. ND100L or HX112M or PM132S…)
- KW
- Speed
- Make
- Machine no (if the motor is very old)
If the nameplate is not available
- Mention Make
- Give the centre height from shaft centre to base in mm (Standard frame size)
- Speed to be measured by Tachometer
- Name of the spare part (Cooling Fan/Fan Cover/End Cover/ Terminal Block …..)
- Dimensions
Important points to note:
- The parts are not interchangeable across different make (For example, Crompton fan cannot be used in Kirloskar motor)
- Parts are not interchangeable across different series of the same make (For example, ABB HX+160 Fan cannot be used in M2BA 160 of ABB)
- Fans differ for different speeds of the same Make/KW/Frame (especially for 2 pole and 4 poles)