1) Between Howrah and Asansol , it's Max Speed is around 127 - 128 Kmph .
2) Between Asansol and Mughalsarai via Madhupur - Jasidih - Patna - Buxar , it's Max Speed is not more than 110 Kmph .
3) Between Mughalsarai and New Delhi , it's Max Speed is 130 Kmph .
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PS...
more... : Now even this train has got LHB Coaches capable of a Max Speed of 160 Kmph BUT it is following the above mentioned speeds which are permitted by Commission of Railway Safety , after observing the track conditions on various sections . Thanks.