Fishing reel comprising bearing

A device, comprising:

• a frame;
• a reel seat disposed in the frame and comprising a central through hole;
• a spool disposed on the reel seat and configured to receive a fishing line;
• a main shaft slidably disposed in the central through hole, the main shaft comprising a first end and a second end;
• a roller disposed on the first end of the main shaft, the roller comprising a pin hole;
• a first gear and a second gear both disposed on the second end of the main shaft, the first gear being engaged with the second gear and being greater than the second gear in diameter, and the second gear disposed around the main shaft and connected to the main shaft in a transmission way;
• a handle disposed on the frame and connected to the first gear in a transmission way;
• a release button disposed on the frame and configured to push the main shaft to move forward;
• a first pressure spring disposed between the second gear and the main shaft and configured to push the main shaft to abut against a control end of the release button;
• a line guide seat disposed on an inner end face of the roller;
• a line hanging rod disposed on the line guide seat and corresponding to the pin hole of the roller;
• an elastic member disposed between the line guide seat and the roller to drive the line hanging rod to retract into the roller;
• and
• a cam unit disposed on one end of the reel seat to drive the line guide seat to push the line hanging rod to extend out of the roller;
• wherein:
• the cam unit comprises a bearing and an end cover;
• the bearing is disposed on the one end of the reel seat and limited by the end cover;
• the end cover comprises a first end in threaded connection to the reel seat and a second end provided with a cam disposed on the bearing.