The BGS50CC uses a miniature DC servo motor with a motor mounted rotary encoder, a reduction gear and a belt drive in order to fold the motor. The result is a very small and lightweight package providing a very high resolution output and great minimum incremental motion capability. However, reversibility is compromised due to some backlash and hysteresis in the reduction gear and belt drive system. BG Series goniometric cradles rotate on a transverse axis above the platform. Compared to full 360 ° rotation stages, they offer maximum free access to the rotating part and allow construction of very compact multi-axis rotation assemblies. BG cradles are designed so that orthogonal mounting of two adjacent-size cradles (e.g., BGS50 and BGS80) provides two perpendicular rotational axes intersecting at about the same point in space. Mounting a rotation stage under the assembly adds a third orthogonal rotation axis through the same point. Precision rotation is ensured by a precision ground, hardened worm gear drive. Single row ball bearings and precision ground tool-steel races ensure smooth rotation with minimal wobble and eccentricity. A home switch, conveniently located at the center of travel, facilitates the return of the platform to a level position.


BGS50CC采用微型直流伺服电机，电机安装旋转编码器，减速齿轮和皮带传动，以折叠电机。结果是一个非常小的轻量级包，提供了非常高的分辨率输出和极大的最小增量运动能力。然而，由于减速齿轮和皮带传动系统中的一些间隙和迟滞，可逆性会受到影响。BG系列测角支架在平台上方的横轴上旋转。满360°旋转阶段相比,他们提供最大自由获取的转动部分,允许建设非常紧凑多轴旋转总成。BG支架的设计使得两个相邻尺寸的支架(例如BGS50和BGS80)的正交安装能够提供两个垂直的旋转轴，它们相交于空间中的同一点。安装在组件下的旋转台通过同一点添加第三个正交旋转轴。精密旋转由精密磨削、淬火蜗轮传动保证。单列滚珠轴承和精密的地面工具钢制滚道确保平稳旋转，最小的抖动和偏心。一个家庭开关，方便地位于旅行中心，促进平台返回到一个水平位置。