Daulat Ram Industries - Synergising ideas and integrating skills

Daulat Ram Industries (DRI) is a leading manufacturer and supplier of rail transport industry. It manufactures various kinds of dynamic braking solutions for diesel, diesel-electric and electric locomotives, in addition to a variety of resistors, AC and DC motors, and blowers for force cooling solutions and fabricated structures.

DRI also provides complete HVAC solutions for passenger coaches, freight wagons and locomotives. It is now making a foray into the field of green toilets, state-of-the art pantry car equipment and fabricated bogie frames for passenger coaches as well as locomotives.

Dynamic braking solutions

Daulat Ram Industries has been manufacturing various kinds of dynamic braking solutions for the last two decades for diesel, diesel electric and electric locomotives. Our force-cooled dynamic braking modules comprise resistor grids, motors, fans, cables, high-temperature resistant insulators, cables and steel fabricated covers. Our dynamic braking solutions are designed for more than 900 amps and resistance tolerances as high as +/- 2%. We have adopted an approach of maximum backward integration and that is why today DRI offers the flexibility to customise dynamic braking solutions to suit customers' needs at a prudent price.

Resistors for various applications in locomotives

Daulat Ram Industries manufactures a variety of resistors for locomotive applications such as:

  • permanent field diverter resistors
  • field weakening resistors
  • pre-charge resistors
  • damping resistors
  • resistors for over voltage protection
  • crow bar resistors
  • snubber resistors
  • field shunting resistors
  • main starting resistors
  • harmonic filter resistors.

All the resistors are designed to reduce life cycle costs for the user. Apart from this DRI manufactures many part numbers of resistors as per OEM designs.

HVAC solutions

A variety of roof-mounted package units air conditioners ranging from 1.5-10t capacity are manufactured by Daulat Ram Industries for applications in passenger coaches, locomotives and freight wagons. Our microprocessor-controlled monitoring system ensures comfortable cooling or heating, and also monitors high and low pressure voltage and current levels for efficient operation of the unit. R-407C refrigerant is used to maintain cooling while meeting all the environmental laws. Our design team has the capability to produce sub-base, sidewall and side mount designs of heaters and air conditioners as per customer demand.

Fan assemblies and motors

We build top-class motors to deliver more horsepower in smaller packages. They are designed to perform under stressful conditions at higher temperatures. Custom-designed heavy-steel-rolled frames or cast steel/iron frames provide top-class structural stability. Class H insulation materials are used, and coil and frame are varnish dipped and baked.

Our fans are designed as per the versatile principles of air engineering and are metallurgically stable. We adopt low pressure and pressure die-casting techniques to achieve highly integral and stable casting structures that pass top-level radiography tests.

We manufacture 54in radiator cooling fan assembly up to 52in braking grid fan motor assembly, oil cooling blowers and other customised fan motor assemblies for various applications.

Fabricated structures for locomotives, passenger coaches and freight wagons

Our fabrication abilities are endowed with superb skilled manpower backed up by a solid design team and state-of-the-art machinery that can handle fabrication of mild steel, stainless steel and aluminum with very high accuracy levels.

We build all our products from the design stage and they have in-built ruggedness to provide smooth performance at high speed and heavy vibrations.

Our design engineers use finite element analysis (FEA) and failure mode effect analysis (FMEA) to ensure reliability and predictability of our fabricated structures. Locomotive superstructures, under frames, side walls, roof assemblies and fuel tanks - along with austenitic stainless steel sidewalls and roof assemblies - are manufactured by us.

In addition to above, Daulat Ram Industries is going to start manufacturing fabricated bogie frames for EMD design 4500HP locomotives, ABB design 6000HP locomotives and, shortly, fiat bogies for passenger coaches.

Daulat Ram Industries, which was founded in the year 1973 in Bhopal, the capital of the central Indian state of Madhya Pradesh, now has seven manufacturing units in four cities. With a workforce of more than 350 people and a sales turnover of more than INR800 million, DRI has come a long way in last 40 years.

At DRI we are committed to provide world-class products and services to our customers as per their specifications. That is why we say that we believe in 'synergising ideas and integrating skills'.

Products and Services

Contact Details

Daulat Ram Industries
Industrial Area
462023 (MP)
Tel: (+91 755) 4085700 - 30
Fax: +(+91 755) 2783452
Email: [email protected]
URL: www.daulatram.in

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