Periodically measure insulation resistance, inspect motor sheath grounding.

定期测量绝缘电阻，检查机壳接地情况。

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This is the replacement inner shaft for the (13305) Pro Craft Bench Top Motor. For a replacement outer sheath use (13328OS).

这是用于替换内部的轴杆状物为了（13305）的探针工艺的长椅子顶部有发动机。用来替换外部的插销用于（13328OS）。

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The lug boss can locate the lead sheath well. The lead sheath can prevent water, oil and so on from entering the interior of the electric motor from the wire outlet effectively.

凸台可很好地定位引线护套，通过引线护套和凸台的隔离， 可有效地防止水、油等从出线孔进入电机内部。

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