CLW manufactures electric locomotives -- 25 kv ac loco with three phase ac drive, 25kv ac locomotive with dc drive. it is one of the largest Electric Locomotive manufacturer in the world. CLW also manufactures AC & DC Traction motors, Switch gears/Control gears, Bogies cast & fabricated, Wheel sets & Steel casting. Chittaranjan Locomotive Works (CLW) has been named after the great freedom fighter, leader and statesmen Deshbandhu Chittaranjan Das .
The production activity started on 26th January, 1950 the day when India became Republic. The initial product of Chittaranjan Locomotive Works was Steam Locomotive . In the period 1950-1972 Chittaranjan Locomotive Works turned out a total number of 2351 Steam Locomotives.