Servo motor

The utility model provides a servo motor, includes motor casing, stator, rotor, motor shaft, end cover and encoder, and the encoder is installed in motor shaft's rear end, and the end cover includes end cover body and bulge, and the shaft hole has been seted up to the bulge, and bearing cap mounting hole and bearing mounting hole have been seted up to the end cover body, install the bearing in the bearing mounting hole, bearing cap mounting hole internal stability is equipped with the bearing cap that covers the bearing, and the through -hole has been seted up at the center of bearing cap, and the inner wall of bearing cap has inside convex clamping ring, and the clamping ring stretches into the bearing mounting hole and support on the outer lane by inner wall at the bearing mounting hole and bearing, the end cover body has a convex turn -ups portion of axial, and a plurality of bayonet sockets have been seted up to the inner wall of end cover body, and motor casing's both ends are step portion, the inner wal