D.C. Electric Motor

For self cooled motors, the maximum air fetcher fan is provided which also reduces the noise generated by the machine.

Cooling Provision:

The lubricant corrects the functioning of the bearing. Frictional wear and any abrasion are minimized. Also lubricant serves as anti-corrosive and sealant element. Proper measure yet should be provided that external element like dirt, water do not influence the lubricant adversely.

Bearing Lubrication:

Where possible, the ball bearing are used sealed on one/both, side/s and are greased for life by the bearing manufacturers.

Bearing seals:

In Elco D.C. motors, only high quality, medium duty rolling elements bearing are used. These are designed to have a fatigue like of at least 50,000 operating hours. Since most present day applications use coupling drives for the load, the additional radial stressing on the motor shaft is minimized and ball bearing are incorporated at both the ends in standard designs. These bearing also have increased radial and axial clearances. Where heavy pulley drives, overhung gear wheels mounted directly on the shaft.

Bearing Protection:

The terminal boxes are made of sheet and manufactured in our well equipped press tools division, the terminal box may have a higher level of ingress protection.

The terminal box:

The feet are of substantial steel plate, welded to the frame.

 Foot construction:

The end covers are of cast iron or fabricated which both statically and dynamically have excellent mechanical properties. The end covers are equipped with long spigots At least 2% of the end plates diameter and small flange width for fastening to the frame, to avoid misalignment and angular errors.

End-Covers:     

is made rigid, thanks to its Special design! The fully laminated Elco D.C. motors are especially suitable for application on thyristor rectifier supplies (also for four quadrant drives) with a rate of current rise (di/dt) greater than 200 in/s.

against the prevalent M.S. solid yoke D.C.Motors. The frame

Smaller and compact frame; for a particular horse power;

            (b.2)     the yoke is made of special laminations. Thus enabling

yoke.

Cornet of the ends of the plate imparts heavy strength to the

(b.1)     made of fabricated mild steel. The V weld at the meeting

 (b) Laminated Plates Fully laminated Elco D.C. Motors.

 (a) Fabricated mild steel Partly laminated Elco D.C. Motors.

The stator frame - Yoke: Solid and Laminated

foot mounting holes in the axial direction resulting in a good weight distribution to avoid undue loading of the motor feet and possible damage to the machine in the transport, if it tips.

Industrial applications present a strong necessity for a high degree of mechanical strength. This implied that the motor frame should be considerably resistant to deformation and of rugged design. This is a normal practice with standard Elco industrial motors. The Elco D.C. machine is such designed that the vertical line through the centre of gravity falls between the

Frame:

Construction of the Elco D.C. Motors

minimum unquiet environment with motors designed for a low noise level.

with a product line flexible over a wide range of industrial environment. The

maintenance and long working life. The adverse performing conditions capability

operating hours should be Long and uninterrupted with a minimum of

specification beyond the requirements generally laid down! This includes; the

The D.C. Electric Motor drives for industrial applications; nowadays; demand