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Example：The following is the way to select the spindle speed at 115rpm:
Step Description
a. Stop the rotation of the spindle.
b. Press down the emergency button.
c. Check the speedometer and select the speed of 115 rpm.
d. Switch the two step speed changing lever to step 2. That’s to align the speed changing
lever (as mark c in the fig. 1) to the step 2. (as the mark b in the fig. 1)
e. Switch the three step speed changing lever to 115 and 80 (as the mark g in the fig. 2)
and align it to the reference point of the step 2 (as the mark e in the fig. 2)
f. Align the H of the Hi-lo speed changing lever to the Hi-lo speed indicator.
Ⅲ. Precaution to switch the rotation speed：
（Application model TPR-1600H/ TPR-2000H）
a. Rotating Spindle must be stopped when at changing rotation speed.
b. Please press down the emergency stop for safety.
c. Start to switch the rotation speed only when the spindle stops running.
Ⅳ. Precaution to switch the rotation speed：
（Application model TPR-1600H/ TPR-2000H）
1 2
H(Hi speed)
1890 1010 475 220 115 55
Rotation speed
（rpm）
L(Lo speed)
1330 715 335 155 80 35
Threading (metric)
Not suggested. M3-M6 M6-M16 M16-M20
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