Tailift TPR720A, Operation Manual

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5-23
5.11 Change the spindle speed.
Warning :
Spindle temperature will go up making operation in trouble when the
spindle speed is set at high rotation mode without movement of the
quill. So please do not set the spindle speed at high rotation mode
when no movement of the quill.
5.11.1 For TPR-720A, TPR-820A, TPR-920A
Ⅰ Ⅰ Ⅰ Ⅰ
. Speedometer
Two speed change lever
（
（ （
（
low speed
）
） ）
）
Speed change levels
Speed
（
（ （
（
rpm
）
） ）
）
88 154 282
Mild steel
∅ ∅ ∅ ∅
25-
∅ ∅ ∅ ∅
32
∅ ∅ ∅ ∅
19-
∅ ∅ ∅ ∅
25
∅ ∅ ∅ ∅
12-
∅ ∅ ∅ ∅
19
Suitable
drilling
diameter mm
Cast iron
∅
∅ ∅
∅
38-
∅
∅ ∅
∅
50
∅
∅ ∅
∅
28-
∅
∅ ∅
∅
38
∅
∅ ∅
∅
22-
∅
∅ ∅
∅
28
Threading (metric) M16-M22 M6-M16 M3-M6
Suitable automatic
feeding step.
1 2 3 1 2 3 1 2 3
Two speed change lever
（ （ （ （
high speed
） ） ） ）
Speed change levels
Speed
（ （ （ （
rpm
） ） ） ）
455 796 1500
Mild steel
∅
∅ ∅
∅
10-
∅
∅ ∅
∅
12
∅
∅ ∅
∅
6-
∅
∅ ∅
∅
10
∅
∅ ∅
∅
3-
∅
∅ ∅
∅
6
Suitable
drilling
diameter mm
Cast iron
∅ ∅ ∅ ∅
19-
∅ ∅ ∅ ∅
22
∅ ∅ ∅ ∅
10-
∅ ∅ ∅ ∅
19
∅ ∅ ∅ ∅
3-
∅ ∅ ∅ ∅
10
threading(metric) Not suggested. Not suggested. Not suggested.
Suitable automatic
feeding step.
1 2 3 1 2 3 1 2 3