Construction Features
Motors in frame sizes 90 to 180 L have for close-grained grey cast iron motor housings and end covers. Frame 90 motors can be supplied with Alluminium motor housings on request. Motors in frame 71 and 80 are supplied with Pressure Die Cast Alluminium housings as a standard feature. However, motors in these two frames can also be supplied with Cast Iron housings on request. Motors in frame 63 are available with Pressure Die Cast motor housings as well as end covers.
Terminal Box Position
Motors in frame 90 to 160 L have terminal box on right hand side, which can be changed to left hand side by simple reverse assembly. Frame sizes 63, 71, 80 and 90 (with Pressure Die Cast Housings) have terminal box on top. Frame 180 L motors have terminal box on top, which can be changed on request to terminal box on either side.
Bearing Arrangements
Motors up to frame 132 are supplied with shielded bearings of high dynamic capacity without inner bearing cover. Frame 160 and 180 are supplied with open type bearings with separate inner and outer bearing covers.
Motor Rating vs Available Frame size
Frame Size
Mountings
Motors can be used in any of the standard mountings as shown in figure attached as per IS 1231 and IS 2253.
Foot cum Flange mounted or Foot cum Face mounted motors can also be supplied.
Face Mounting
Foot Mounting
Flange Mounting
Foot Mounting Frame Dimensions All dimensions in mm