Segmented sliding bearing arrangement for portable lathe

In a portable lathe having a first, non-rotatable ring member and a second ring member rotatable about a central longitudinal axis, the improved adjustable bearing means for locating and guiding the second ring member relative to the first ring member comprising:

• (a) circumferentially spaced apart bearing segments located on one of said first and second ring members such that an end thereof extends toward the other of the ring members;
• (b) a pair of first radial and thrust bearing surfaces defined on said one end of the bearing segments such that the first bearing surfaces converge toward each other;
• (c) a pair of second radial and thrust bearing surfaces defined by said other of the ring members, the second bearing surfaces converging toward each other and adapted to slidably contact the first bearing surfaces so as to locate and guide the respective ring members;
• and,
• (d) means for axially moving each bearing segment at least toward said other ring member in a direction generally parallel to the central longitudinal axis.