Crown wheels are cast steel manufacture, heat treatment machines increases from each pulley roller bearings by the installation of the shafts, ensure good results.
Crown wheels are cast steel manufacture, heat treatment machines increases from each pulley roller bearings by the installation of the shafts, ensure good results.
天车轮均用合金铸钢制造，热处理后机加而成，每个滑轮都由滚子轴承安装在轴上，确保使用效果良好。