上下轴用滚珠轴承支承，同步齿形带传动。
The arm shaft shaft and hook shaft are supported by ball bearings.
道夫采用变频电机，同步齿形带传动，实现无级调速。
The doffer is driven by an inverter and a synchronous toothed belt which permits stepless variations of the speed.
所有传动部件改以往的链条传动为同步齿形带传动，其传动更平稳，噪声更小。
All transmissions part changes from chain drive structure to synchronized tooth belt, which has more smooth transmission and less noise.
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