Prag Group Of Industries Lucknow, Uttar Pradesh

The brake cylinders are equipped with integral double-acting slack adjusters, which maintain constant piston stroke, resulting in uniform and efficient braking performance.A Load Sensing Device [EL-60] – UIC approved design – senses loaded or empty conditions of the freight wagons, and provides a visual indicator showing brake cylinder pressure proportioning, and also sends out pneumatic signals which govern the magnitude of braking forces. This helps protect the wheels by reducing empty-car braking forces that can result in costly wheel skidding, especially under adverse weather or track conditions.

Prag’s range of Locomotive Draft Gears include both Rubber as well as Polymer based Draft Gears with Yoke Assemblies and are built to perform continuously in the harshest of operating and environmental conditions. PAC and MAC Draft Gears with laminated-rubber spring elements, designed for use on EMD locomotives, are engineered to perform in the heaviest of traction applications and offer adequate protection in draw as well as buff modes while absorbing huge amounts of energy. The DG70N Draft Gear is a Non-Friction Heavy Duty Soft Draft Gear designed for use in Alco & Electric Locomotives. It is fitted with a 70 kJ Polspa Polymer Spring Pack, offering years of maintenance-free performance and ensuring much superior riding comfort and safety, as compared to rubber-spring based draft gears.

Rubber moulding and Rubber-metal bonding has been Prag’s forte since the very beginning. Today, range of rubber products offered is amongst the most extensive in the industry and caters to Oilfield, Industrial, Automotive and Railroad applications. Our energy management rubber products include a range of rubber buffer, draft gear and side bearer springs for use on locomotives, passenger cars and freight wagons. We also manufacture a range of shear pads, compression mounts, spherical bearings, rubber springs, and bushes for use in EMD Locomotive and LHB Fiat Bogie suspension.

Prag AES-APU [Automatic Engine Shutdown and Auxiliary Power Unit] system is designed to provide substantial fuel saving and reduce emissions of Diesel-Electric Locomotives by automatically shutting-down of main locomotive engine on idling along with continuous monitoring of critical parameters. The system includes a small diesel engine coupled with a low capacity compressor and alternator that perform the function of maintaining main reservoir air pressure and keeping the locomotive batteries charged while the main engine is shutdown. The equipment is supplied complete with controls, sensors, accessories, and application software. It is estimated that by preventing unwanted locomotive idling the Prag AES-APU would provide fuel saving of up to 150 – 200 Litres per locomotive per day, which translates to more than US$ 30, 000 per locomotive per annum in addition to reducing idling emissions by more than 25%.

Unique parallelogram design brake system is manufactured under the license of and transfer-of-technology from M/s Knorr Bremse India Pvt. Ltd. This highly reliable design is AAR approved and is designed to minimize weight and deliver optimum braking performance, which results in uniform shoe and wheel wear. Over 5, 000 freight wagons fitted with Prag Air Brake System are in active service in the Indian Railways. The brake cylinders are equipped with integral double-acting slack adjusters, which maintain constant piston stroke, resulting in uniform and efficient braking performance. A Load Sensing Device [EL-60] – UIC approved design – senses loaded or empty conditions of the freight wagons, and provides a visual indicator showing brake cylinder pressure proportioning, and also sends out pneumatic signals which govern the magnitude of braking forces. This helps protect the wheels by reducing empty-car braking forces that can result in costly wheel skidding, especially under adverse weather or track conditions.