● Installed an isolated cooling fan in the interior of motor to dissipate heat.Could be operated continuously,steady and durable.
● The vertical column is enlarged(60mm),vertical column is solid and treated by tempering to get rid of stress,surface is chrome plated,wear resisting and no rust.
● Motor is particular designed with automtic control loop.Function options of tiny holes, blind holes,and reduce costs. 
● Function options of tiny holes, blind holes, and perforated thread.
● It taps in clockwise & counter clockwise rotation while the spindle is running in high speed, it was being auto. exchange in low speed, the depth of tapping can get ±0.1mm accuracy.
● Free to exchange tiny pitch.
● Quick and easy to exchange.
● Gear drives with merely one side teeth without slots.
● Slow revolving, wear resisting
● Because one running is for each tapping thread, it can taps perfect thread's rings to let the tap enlarge the using life time, the accuracy gets the standard of the gauge, the working piece cannot pull jumping while the tapping is backing action, it can simplify the fixture, the working pieces don't pressure or holding, they only avoid anti-rotation to tapping job.

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