LESS THAN STANDARD SEPARATION WHILE BEING VECTORED FOR VISUAL APCH ORD.

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WE WERE MAKING AN APCH TO RWY 27R AT ORD. THE F/O WAS FLYING. HDG E AT 6000' AT 210 KTS (ASSIGNED). NE OF ORD WE OBSERVED TFC TO OUR RIGHT (1 O'CLOCK) OVER LAKE MICHIGAN WBOUND. OUR NEXT CLRNC WAS TO 4000'; FOLLOWED BY A TURN TO 160 DEGS. AS WE WERE TURNING AND DSNDING WE WENT THROUGH SOME SCATTERED CLOUDS AND I LOST SIGHT OF THE TFC. ONCE BELOW THE CLOUDS THE TFC WAS SIGHTED IMMEDIATELY; BUT DID NOT APPEAR TO BE A FACTOR. WE WERE THEN CLRED TO 3000' AND CLRED TO TURN RIGHT TO 270 DEGS. THE TURN TOOK US THROUGH THE RWY 27R LOC AND CLOSE TO THE WBOUND TFC. NO EVASIVE ACTION WAS TAKEN; NOR WERE WE EVER ADVISED THAT THERE WAS CONFLICTING TFC. WE WERE THEN CLRED TO A 290 DEG HDG; TOLD TO SLOW TO 170 KTS; ASKED IF WE HAD THE FIELD IN SIGHT; AND CLRED FOR A VISUAL TO RWY 27R. I BELIEVE OUR ASSIGNED SPD OF 210 KTS AND A STRONG N WIND (30-40 KTS BTWN 4000-6000' PER PLT RPTS) MADE OUR TURN RADIUS TOO GREAT. THE CTLR ALSO HAD ANOTHER ACFT DSND TO THE WRONG ALT; SO HE WAS TRYING TO CORRECT THAT PROB AND WAS LATE IN TURNING; SLOWING AND DSNDING US. I COULD NOT TELL IF THE OTHER ACFT WAS CLBING OR DSNDING; BUT HE WAS MOVING TO THE REAR OF MY SIDE WINDOW SO I FELT WE WERE NOT GOING TO COLLIDE.