The small dc motor suppliers tells you that the permanent magnet DC motor frame three standards
The frame of the permanent magnet DC motor is divided into one left and right frame, which is a welded steel plate structure. After removing the welding stress, the frame has a roll bearing. Inside the frame there is a square fastening rod, and the upper end of the rod is articulated with the bearing seat at both ends of the upper roller.
Permanent magnet DC motor
Permanent magnet DC motor frame three standards:
1, sliding joint surface, its machining accuracy is not less than the 9th tolerance specified in GB/T1801; The vertical degree of its base end surface is not less than the level 8 tolerance specified in GB/T1184;
2, turn the axis of the hole, the vertical degree of its reference end surface is not less than the 8 tolerance specified in GB/T1184;
3, symmetric permanent magnet DC motor, the parallel degree of the axis of the two shaft holes, the symmetry of the center of the frame is not lower than the 9th tolerance specified in GB/T1184.
