Nema motors

Power outputs0,5 - 100HP
VoltagesUp to 600V
FramesNEMA FRAME 143 - 405
Most common applicationsMachine 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 name1B2B3B4B5B
D-End EndshieldAluminumCast-IronAluminumCast-Iron
N-End EndshieldAluminumCast-Iron
5B Motor Series
 Standard configurationSpecial configuration
StandardsNEMA MG1 + Applicable IEC EN 60034Specification on request
Polarity / SpeedSingleDouble / Triple
Cooling methodIC 411IC 410 / IC 416 / IC 418
IP Index of ProtectionIP55IP56 / IP65 / IP66
Insulaton ClassFH
Temperature rise ClassBF / H
Altitude<1000m a.s.l.up to 4000m a.s.l.
Power supplyMainFrequency converter
RotorSquirrel cage-
Material of the rotor windingsAluminum-
DutyS1S2 … S9
Ambient temperature-20°C / +40°COn request
Shaft extensionD-EndD-End + N-End
Shape of the shaft extensionCylindric, with keyConical / special
Material of the shaftSteel C4039NiCrMo3 / Stainless steel
BearingsBallRoller / Angular
Seal ringMIMLabyrinth / Viton / Silicon
Material of the screwsGalvanisedStainless steel
Vibration gradeAB
Material of the fanPolyamideAluminum
Material of the fan coverSteel-
Lifting eyeboltFrom 100 frame and aboveOn request
Terminal box - positionOn the left side, when seen from D-End On top ( Aluminum)On top / On the right / Flying leads
Terminal box - materialAluminum(*)-
Cable entryOn the right sideRotatable in step of 90°
Q.ty of terminals (single polarity)6-
Q.ty of terminals (double polarity)612
Q.ty of terminals (triple polarity)12-

(*): cast-iron for NEMA frame 324-326 e 364-365 

Special solutions

Insulation class H
Stator windings with enhanced insulation system for inverter
Special voltage and/or frequency
Double impregnation
Encapsulation of the windings

Bi-metal protection
PTC Thermistors
PT100 Thermo-resistances
PT1000 Thermo-resistances
Anticondensation heaters

Arrangment for vibration detector
Arrangment for speed detector (toothed wheel)

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

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

Download PDF sheet

Industria Scientifica Generale Elettromeccanica Vicenza (I.S.G.E.V.) S.p.A.
Reg. Cap. € 520.000 fully paid up
REA 87642/VI
Reg. Imp. Vicenza n. 3803
No VAT: 00170430243

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