Horizontal driver

The horizontal driver comprises a shell and a rubber sleeve arranged on the outer side of the shell in a sleeving mode, the shell is provided with a through opening allowing a main shaft to penetrate through, at least two protruding blocks are fixed to the end face, provided with the through opening, of the shell, and grooves allowing the protruding blocks to be embedded in are formed in the inner wall of the rubber sleeve. The device has the advantages that the rubber sleeve is not prone to touching the main shaft, and interference is not prone to occurring. 本申请涉及一种水平驱动器，其括壳体和套于壳体外侧的橡胶套,所述壳体设有用于供主轴穿设的通口,所述壳体具有通口的端面固定有至少两个凸块,所述橡胶套的内壁设有供凸块嵌入的凹槽。本申请具有使橡胶套不易触碰主轴，不易发生干涉的效果。