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About Us

M/s. Involute Engineers & Industries (M/s. IEI) has been engaged in manufacture and indigenous development of Electro-mechanical & Electro-pneumatic equipment for Railway transportation, since its inception in 1984. Major thrust of its activity has been the import substitution in above mentioned field.

M/s. Involute has rendered a considerable and meaningful contribution by indigenously developing among others a variety of critical spares & sub-assemblies for N-32 Tap Changer. N-32 Tap Changer is a vital equipment in A/c Electric Locomotive. IEI has been a major supplier of Railway Components like Railway Camshafts, Precision Gearbox to M/s. Bombardier, Adtranz, Baroda (formerly M/s. Asea Brown Boveri Ltd.) and OEM for N-32 Tap Changer. Presently, M/s. IEI caters to the maintenance demand for Tap Changer & Circuit Breaker spares to all the Electric Loco Sheds in India under various Zonal Railways.

In 1995, M/s. BHEL had entrusted M/s. IEI to develop and supply complete SMSC i.e. an equipment also known as D.C. Controller for fitting in WCAM2, WCAM3 & WCAG1 Electric Locomotives (AC/DC) within a limited time frame. These equipments were earlier being imported from Switzerland. IEI met the challenge successfully. Presently, 170 pieces of such equipments are functioning satisfactorily in Mumbai area under Western & Central Railways. We Have also developed Eddy Current Clutches suitable for application in 3100/3300 HP Diesel Electric locomotives for DLW/Varanasi.

Our Promoter

Involute Engineers & Industries has been promoted by
Sri Mrityunjoy Hazra, a Post Graduate Mechanical Engineer, with training abroad under Confederation of British Industries Overseas Scholarship (UK).

Quality

IEI's quality assurance department is equipped with sophisticated and modern measuring instruments, including a Standard Room. IEI maintains a well equipped precision workshop with imported Spur & Bevel Gear generating machines including Gear Testers. IEI assures delivery of avant-garde Railway Components like Precision Gearbox, Railway Camshafts, and others.

IEI is an ISO-9001:2008 certified concern. We have been approved by Research Designs & Standards Organization, Lucknow - Ministry of Railways as regular source for manufacture & supply of the above Locomotive items.

Our Customers

We have delivered Railway Components like Railway Camshafts, Precision Gearbox and others to many client's according to their requirements. They have appreciated the rust resistant and durable construction of all the products. Our major customers are: 

  • Eastern Railway, Fairlie Place, Kolkata - 700001
  • South Eastern Railway, Garden Reach, Kolkata - 700043
  • Central Railway, C.S.T. Mumbai - 400001
  • Western Railway, Church Gate, Mumbai - 400020
  • Southern Railway, Park Town, Chennai - 600003
  • South Central Railway, Rail Nilayam, Secunderabad-500071
  • Northern Railway, Baroda House, New Delhi - 110001
  • Metro Railway, Metro Rail Bhawan, 33/1 Chowringhee Road, Kolkata - 700071
  • Bharat Heavy Electricals Ltd., P.O.- BHEL, Jhansi - 284129
  • Bharat Heavy Electricals Ltd., Piplani, Bhopal- 462022
  • Bombardier Transportation India Ltd., Maneja, Vadodara - 390013
  • Diesel Locomotive Works, Varanasi



Push Rods & Journal Pins
Push Rods & Journal Pins
Grating Plate Complete
Grating Plate Complete
GR Oil Pump Pneumatic
GR Oil Pump Pneumatic
Sector Lever Assembly
Sector Lever Assembly
Servo Motor Cum Servo Controller For A.C- D.C Loc
Servo Motor Cum Servo Controller For A.C- D.C Loc
Contact Lever Assembly
Contact Lever Assembly
Intermediate Gears
Intermediate Gears
Camshaft With Planetary Gearing
Camshaft With Planetary Gearing
Load Switch Shaft
Load Switch Shaft
Contact Pins
Contact Pins
Eddy Current Clutch
Eddy Current Clutch
Control Cylinder Assembly
Control Cylinder Assembly
Control Block Assembly
Control Block Assembly
Drive Wheel
Drive Wheel
3 Way Solenoid Air Valves
3 Way Solenoid Air Valves




Contact Details
INVOLUTE ENGINEERS AND INDUSTRIES
Sadananda Smriti Path, Baltikuri, Howrah - 711113, West Bengal, India
Phone:91-33-26530750/26531352
Fax:91-33-26533150
Email Us : involute_eng@yahoo.co.in
Send SMS
Key Personnel
Mr. M. Hazra (Proprietor)
Mobile:+919830265393


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