GT D型上轮采用斜边光轮、该轮具有自定心的作用，可避免输送带跑偏。
GTD on wheels adopt bevel edge light type wheel, the wheel has a self-centering effect, can avoid the conveyor belt running deviation.
确保加工模具孔形的真圆度，该机又设计了稳定、高精度自定心的模座，从而提高模具的品质。
To ensure the degree of processing die's hole circle, it is also designed into a stable, high accurate self-centering mold base, thereby improving the dies quality.
渐开线花键在近跟处有最大的强度，(键齿)能精确分布和自定心，这样就有相同的支撑力和应力，同时能准确地配合和测量。
Involute splines have maximum strength at the base, can be accurately spaced and are self-centering, thus equalizing the bearing and stresses, and they can be measured and fitted accurately.
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