| Indian locomotive class WCM-4 | |
| Powertype: | Electric |
| Designer: | Hitachi |
| Builder: | Hitachi |
| Ordernumber: | 59/459/1/RS(F) |
| Buildmodel: | EM/4 |
| Builddate: | 18 April 1959 |
| Totalproduction: | 7 |
| Aarwheels: | C-C |
| Uicclass: | Co′Co′ |
| Britishclass: | Co-Co |
| Bogies: | 3 Axle fabricated frame, Swing bolster with Equalizer beams |
| Wheeldiameter: | New: 12200NaN0, Half worn: 1182abbr=onNaNabbr=on and Full worn: 11440NaN0 |
| Wheelbase: | 23800NaN0 |
| Over Couplers: | 20abbr=onNaNabbr=on |
| Body: | 18.68abbr=onNaNabbr=on |
| Width: | 3.05abbr=onNaNabbr=on |
| Height: | 4.282abbr=onNaNabbr=on |
| Frametype: | 3 Axle fabricated frame |
| Sandcap: | 16 sandboxes each |
| Powersupply: | 110 V DC |
| Electricsystem: | 1.5 kV DC Overhead |
| Collectionmethod: | Pantograph |
| Tractionmotors: | HS-373-BR |
| T/M Amps 1 Hr: | 765A |
| T/M Amps Cont: | 620A |
| Gear Ratio: | 16:73 |
| Multipleworking: | Not possible |
| Locobrakes: | Air/Hand, Regenerative braking |
| Trainbrakes: | Vacuum |
| Compressorcap: | 7kg/cm² |
| Safety: | Slip control, Over voltage relay, No volt relay, Low pressure governor, Vacuum governor Train parting alarms, and Brake cylinder cutoff valve |
| Maxspeed: | 120.50NaN0 |
| Poweroutput Start: | Max: 4000-1NaN-1 |
| Poweroutput 1 Hr: | Max: 4000-1NaN-1 |
| Poweroutput Cont: | Max: 3290-1NaN-1 |
| T/E Starting: | 31250-1NaN-1 |
| T/E 1 Hr: | 25300-1NaN-1 |
| T/E Continuous: | 18700-1NaN-1 |
| Factorofadhesion: | 0.25 |
| Operator: | Indian Railways |
| Operatorclass: | EM/4 |
| Fleetnumbers: | 20076-20082 |
| Locale: | Central Railways |
| Deliverydate: | 1959 |
| Firstrundate: | 1959 |
| Lastrundate: | January 2000 |
| Retiredate: | Early 2000s |
| Withdrawndate: | Early 2000s |
| Preservedunits: | none |
| Disposition: | All scrapped. |
The Indian locomotive class WCM-4 was a class of 1.5 kV DC electric locomotives developed in the late 1950s by Hitachi for Indian Railways. The model name stands for broad gauge (W), Direct Current (C), Mixed traffic (M) engine, 4th generation (4). A total of 7 WCM-4 locomotives were built in Japan in 1959 for Central Railways.
Indian Railways decided to procure seven locomotives from Hitachi. They were manufactured in Japan and shipped to India in 1959. These locomotives had now-common Co-Co wheel arrangement.[1] Initially the WCM-4 class were known as EM/4 class.[2]