Function: 1. Uses sophisticated production technology that is compact and robust, has high torsion and has a reduction ratio of 28:1.2. With self-locking, reverse self-locking can be realised, so that the engine does not have to apply another torsion to maintain the load.3. Can handle heavy torsion loads without worrying about rounding off or slipping of waves and holes, providing the robot with powerful and stable performance.4. One side of the gear is a circular slot and the other side is flat, which makes it easier to insert and attach the worm wheel.5. Can transfer the torsion generated by the gearbox motor to the output shaft and increase the range of use of the worm gear.Usage: the worm wheel has a module of 1.25 and a centre hole diameter of 14 mm. It has a 16mm robot common hole grid. One front side of the gear has a circular slot with a diameter of 32 mm and a depth of 2.5 mm, and the other face has four countersunk holes with a diameter of 8 mm. This construction is beneficial to reduce the weight of the gearbox without changing the strength of the gearbox, and to better work with the 3311 3312 series high speed shaft terminals and can also avoid the installation of fixed wheels. The overhang of the screw head prevents the flat surface of the