Bearing for mounting the drive shaft of a work apparatus in a guide tube, and work apparatus including the bearing

A work apparatus comprising:

• a housing;
• a drive motor having an output shaft and being arranged in said housing;
• a tool head having a tool;
• a guide tube extending between said housing and said tool head;
• a bearing arranged in said guide tube;
• a drive shaft extending through said bearing and being configured to provide an operative connection between said output shaft of said drive motor and said tool of said tool head;
• a bearing mounting said drive shaft in said guide tube;
• said bearing defining a central axis and including:
• a bearing tube having a continuous bearing opening for receiving said drive shaft of the work apparatus;
• said bearing opening defining an incircle and an inner wall and having at least one cross section whereat said bearing opening has a non-circular cross section;
• in said non-circular cross section, said bearing opening having first sections lying against said incircle of said bearing opening and having second sections lying in a circumferential direction between said first sections;
• said second sections lying at a distance (α) from said incircle;
• and,
• said first sections of said bearing opening being in a form of respective elevations whereat said inner wall of said bearing opening projects in a direction of said central axis.