The reverse type differential shaft uses a spring mechanical mechanism to support the core, preventing tension instability caused by external factors. The key teeth are lowered using the highest air pressure. At this point, the core can be inserted, then the air pressure is reduced back to 0 kg and gradually increased from 0 kg to the optimal tension. The air pressure for restoring the key between 4 to 5.5 kg.
This shaft offers high stability and is used for winding tensions that are low or extremely low.
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.jpg "Reverse type differential shaft")
