20 Tone Diesel Crane is a Rail Mounted, Diesel operated, BG (Broad Gauge) transportation crane. The crane is extensively used by Mechanical Department of Indian Railway in sick lines for maintenance of wagons/coaches and Transportation Department Indian Railway for handling of Goods.
First 20T Diesel Crane was manufactured in 1980-81, and total 4 nos. were manufactured upto 82-83 with mechanical control system.
Later the control system was changed to Pneumatic as per RDSO Specification No. CR.D.122/90. Since 89-90 the shop has been manufacturing the 20 Tonne cranes as per this specification and has manufactured many such crane.
There are a total of 16 20T cranes sanctioned in the RSP. Out of these 8 nos. for ER has already been taken under manufacture and is scheduled to be turned out during 2002-05.
For the rest cranes a design of 20T Hydraulic crane has already been finalized by Jamalpur in consultation with RDSO. All future production of the cranes will be done as per the new design subject to success of prototype of the first crane.
|Load free on rail:|
To lift 10 T on 5 m radius
To lift 8.5 T on 5.5 m radius
To lift 6.5T on 6 m radius
To lift 6 T on 7 m radius
To lift 5.5 T on 7.5 m radius
To lift 5 T on 8 m radius
To lift 4.5 T on 8.5 m radius
|Axle load in running order||16 Tonnes|
|Wheel dia||915 mm|
|Tail radius||3.5 meters|
|Block up base width across the track||4 meters|
(a) FORE - 1.17 meters
(b) AFT - 1.17 meters
|Range of lift at 5 meter radius||7 meters above rail level to the inside of the hook and 2 meters below the rail level.|
|Operating speeds:|| |
|Hoisting speed with capacity load||15 meters per minute|
|Max. travelling speed with 10T load at the hook under its own power||6 kmph|
|Normal travelling speed under its own power||10 kmph|
|Slewing speed||2 RPM|
|Derricking speed||from running height to min. radius in 1 minute|
|Hauling speed||75 kmph|
|Maximum super elevation||140 mm|
|Tare weight||60 T approximate|
|Jib radius||9145 mm|
|Wheel base||5080 mm|
|Diesel Engine||Ashoke Leyland Type ALU-680, 6 cylinders, 140HP, 1800 RPM|
|Torque covertor||KPC make type 6-S-1512-1|
|Cardon shaft||C B W 307. 40 -series|
|Brake||Pneumatic and hand brake|