Patent ID: 8464863

Claim:
A machine comprising a frame and a drive roller assembly mounted in the frame, the machine further comprising a first and a second bearing for mounting the drive roller assembly, the drive roller assembly comprising a shaft having a first end and a second end, and on which a drive roller is mounted between the first end and the second end, the first end of the shaft being lodged in the first bearing and the second end of the shaft being lodged in the second bearing, the drive roller assembly also comprises a drive member attached to the second end of the shaft, wherein the drive roller assembly further comprises a split ring located on the first end of the shaft between the first bearing and the first end of the shaft, the split ring having a conical surface that positions the first end of the shaft relative to the first bearing, the second bearing being mounted in a housing, which is removably mounted on the frame, and wherein the conical surface of the split ring is an internal surface thereof, the first end of the shaft having a conical external surface part that engages with the conical internal surface of the split ring.