Nema motors
| Power outputs | 0,5 - 100HP |
| Voltages | Up to 600V |
| Frames | NEMA FRAME 143 - 405 |
| Sectors | Industrial |
| Most common applications | Machine tools / Fans / Pumps / Handling and lifting systems |
We can supply NEMA motors for the US market, in standard configuration with couplings corresponding to the American measurement system, or in special configuration according to your requirements.
The series name identifies the combination of materials of the main mechanical components of the engine (case and endshields):
| Series name | 1B | 2B | 3B | 4B | 5B |
| D-End Endshield | Aluminum | Cast-Iron | Aluminum | Cast-Iron | |
| Case | Aluminum | Cast-Iron | |||
| N-End Endshield | Aluminum | Cast-Iron | |||
| Standard configuration | Special configuration | |
|---|---|---|
| Standards | NEMA MG1 + Applicable IEC EN 60034 | Specification on request |
| Polarity / Speed | Single | Double / Triple |
| Cooling method | IC 411 | IC 410 / IC 416 / IC 418 |
| IP Index of Protection | IP55 | IP56 / IP65 / IP66 |
| Insulaton Class | F | H |
| Temperature rise Class | B | F / H |
| Altitude | <1000m a.s.l. | up to 4000m a.s.l. |
| Power supply | Main | Frequency converter |
| Rotor | Squirrel cage | - |
| Material of the rotor windings | Aluminum | - |
| Duty | S1 | S2 … S9 |
| Ambient temperature | -20°C / +40°C | On request |
| Shaft extension | D-End | D-End + N-End |
| Shape of the shaft extension | Cylindric, with key | Conical / special |
| Material of the shaft | Steel C40 | 39NiCrMo3 / Stainless steel |
| Bearings | Ball | Roller / Angular |
| Seal ring | MIM | Labyrinth / Viton / Silicon |
| Material of the screws | Galvanised | Stainless steel |
| Vibration grade | A | B |
| Material of the fan | Polyamide | Aluminum |
| Material of the fan cover | Steel | - |
| Lifting eyebolt | From 100 frame and above | On request |
| Feet | Fixed | - |
| Terminal box - position | On the left side, when seen from D-End On top ( Aluminum) | On top / On the right / Flying leads |
| Terminal box - material | Aluminum(*) | - |
| Cable entry | On the right side | Rotatable in step of 90° |
| Q.ty of terminals (single polarity) | 6 | - |
| Q.ty of terminals (double polarity) | 6 | 12 |
| Q.ty of terminals (triple polarity) | 12 | - |
(*): cast-iron for NEMA frame 324-326 e 364-365
Windings
Insulation class H
Tropicalisation
Stator windings with enhanced insulation system for inverter
Special voltage and/or frequency
Double impregnation
Encapsulation of the windings
Protections
Bi-metal protection
PTC Thermistors
PT100 Thermo-resistances
PT1000 Thermo-resistances
Anticondensation heaters
Transducers
Arrangment for vibration detector
Arrangment for speed detector (toothed wheel)
Encoder
Tachometer
Painting and solutions for extreme environment
Special painting colour (std RAL5010)
Special painting process for agressive environment
Drainage hole
Solutions for low temperatures (down to -50°C)
Solutions for high temperatures ( up to +120°C)
Anti-rain canopy
IP56, IP65, IP66 protection degrees
Bearings
Sealed bearings
Roller bearings
Insulated bearings
Hybrid bearings
Bearings for low temperatures
Bearings for high temperatures
Angular bearings
Re-greasing systems
D-End fixed bearing
Rotating labyrinth
Viton ring
Silicon ring
Shaft and Fan
Special shaft extension
Second shaft extension
Non-ventilated motor (IC410)
Forced ventilation (IC416)
Non-ventilated motor, externally cooled (IC418)
Metallic fan
Vibration grade B
Terminal box
12 terminals
Position of terminal box
Direction of cable entry
Flying leads
Auxiliary terminal box