emp [° C]
- Motor temperature
Vsp [Krpm] - Speed rotation
CONDITIO
1. General.
2. Still air cooling.
4. Water flow cooling.
No tool holder (wheel mount).
3. Air flow cooling.
Water Temperature 12 [°C].
Including sensor. Air Flow 40 LPM. Water Pressure 5 bar.
Ambient Temperature 22-24 [°C]. Air Pressure 5 bar. Cooling Water Flow 3.2 LPM.
Temp. Measurement - termistor.
.
.
.
.
.
.
.
.
.
.
.
.
25 24.737 23.303 22.665
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
55 53.934 49.293 47.413
60 66.379 58.965 56.181
P
1
=1ba
P
2
=3 ba
P
3
=5ba
Vsp [Krpm] - Speed rotation
Tm [° C]
- Motor temperature.
Pw[bar] - Water Pressure
f [° C]
- Temperature in the front area.
Tm [° C]
- Motor temperature.
s [° C]
- Temperature in the middle area.
r [° C]
- Temperature in the rear area.
CONDITIO
1. Driver - BDH - Hathaway. CONDITIO
2. Ambient Temperature 22-24 [°C]. 1. No cooling.
3. Ambient Humidity 60%. 2. Ambient Temperature 22-24 [°C].
4. Temp. Measurement termistor - SEMITEC 203GT-1. 3. Ambient Humidity 60%.
4. Air Pressure in entrance 5 bar.
mm
a
x
ens
on
s.
erm
s
or
es
s
ance
.
-
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
CONDITIO
1. Ambient Temperature 22-24 [°C].
2. End shaft extension.
3. Reaction time for temperature stabilization
in shaft ~ 5 min.
∆L[
µ
] - Shaft extension
R[
Ω
] - Termistor resistance
Tm [° C]
- Motor temperature
15
The Spindle Thermal Behavior
Motors Temperature Vs. Rotation Speed & Cooling System
Motor Temperature Vs. Water Pressure
T=22*P
W
-0.06
*e
0.02
SP
Temp = a*e
b*Vsp
T
W
= 18*e
0.02
SP
T
= 19*e
0.04
SP
T
S
= 20*e
0.055
SP
Tf =15.487*e
0.018*Tm
Ts = 15.92*e
0.019*Tm
Tr =17.58*e
0.013*Tm
∆L = 0.236*Tm-5.426
∆L= 16.442*℮
-0.142*Rmoto
Shaft Extension Vs. Motor Temp
0
50
100
150
0 1020304050607080
V
SP
[Krpm]
Temp[C]
10
20
30
40
50
60
70
80
0 102030405060708090
Tm [
o
C]
Tf,Ts,Tr [
o
C]
0
2
4
6
8
0 102030405060
Tm [
o
C]
∆
L
[µ]
0
3
6
9
12
0246810121416
R [ Ω]
∆
L [
µ
]
20
40
60
80
100
5 15253545556575
VSP[Krpm]
Temp[C]
