Kenneth Conley, 39, formerly of Tinley Park, received the maximum sentencing for the May 13, 2011 robbery of MB Financial Bank in south suburban Homewood.
In imposing the sentence, U.S. District Judge Samuel Der-Yeghiayan found that Conley is a career offender under federal law, according to the U.S. Attorney's Office.
The office said Conley was ordered to pay $3,969 in restitution to the bank. Conley had pleaded guilty to bank robbery on Oct. 29, 2012, but the judge also found that Conley obstructed justice following his guilty plea and had not accepted responsibility.
During the robbery, Conley showed a teller what appeared to be the butt of a gun in his waistband. Officials say he threatened to shoot the teller in the head.
However, it was not a real gun, according to officials.
Conley is awaiting a separate trial for escaping from the Metropolitan Correctional Center on December 18, 2012. Authorities captured Conley in Palos Hills after 18 days on the run. He was ordered to be held without bond.
His accomplice in the jail break, Joseph "Jose" Banks, was caught after just two days on the run.
Together, Conley and Banks widened a narrow window in their cell and tied bed sheets to create a makeshift rope before climbing down the building.