Patent ID: 8152378

Claim:
An automatic-positioning linear guide comprising: a stationary base having a pair of guiding rail sets provided at two lengthwise sides of a top surface thereof, wherein each guiding rail set has at least one guiding rail provided at one lengthwise lateral side of each guiding rail set and the at least one guiding rail has a roller contacting portion laterally jutting out of each guiding rail set; a driven body mounted on the stationary base, wherein at least one roller is provided at each of two sides of a bottom surface of the driven body and each at least one roller comprises two bearings and an axial shaft combining and fastening the two bearings to the driven body, wherein two outer bushes of the two bearings jointly define an annular sliding groove at an exterior of the at least one roller to receive the roller contacting portion of the guiding rail, whereby when the two outer bushes of the two bearings contact the roller contacting portions, an axis of the two bearings deflects; at least one groove formed on the bottom surface of the driven body between the at least one roller provided at each of the two sides of the driven body; and at least one lateral pressure adjusting member provided parallel to the two sides of the driven body and perpendicularly crossing the at least one groove.