TH EN
TH | Data sheet
Critical speed The maximum linear speed of Rollon TH Series linear units depends on the critical speed of the screw (based on its diameter and length) and on the max. permissible speed of the ball screw nut used. On the below graphs, you can find the critical speed (in m/s) in function of the ball screw size and length of the unit (L).
Critical speed for TH70
0,40
Critical speed for TH70
0,00 0,10 0,05 0,05 0,15 0,10 0,10 0,20 0,15 0,15 0,25 0,20 0,20 0,30 0,25 0,25 0,35 0,30 0,30 0,40 0,35 0,35 0,40 0,05 0,00
08x2.5
Critical speed for TH70
08x2.5
08x2.5
Vmax [m/s]
Vmax [m/s]
Vmax [m/s]
L [mm]
150
350
550
250
650
300
450
500
200
700
600
400
Fig.33
L [mm]
0,00
150
350
550
250
650
300
450
500
200
700
600
400
Critical speed for TH90 L [mm]
150
350
550
250
650
300
450
500
200
700
600
400
1,20
Critical speed for TH90
12x10
1,00 1,20
Critical speed for TH90
0,20 0,60 0,40 0,40 0,80 0,60 0,60 1,00 0,80 0,80 1,20 1,00
12x10
12x10
12x05
Vmax [m/s]
12x05
12x05
0,00 0,40 Vmax [m/s] 0,20 Vmax [m/s]
0,20 0,00
L [mm]
350
550
250
750
650
300
450
500
700
600
800
400
0,00
L [mm]
350
550
250
750
650
300
450
500
700
600
800
400
L [mm]
Fig.34
350
Critical speed for TH110 450 500 550
250
750
650
300
700
600
800
400
0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40 1,60 1,80 0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40 1,60 1,80 0,00 0,20 0,40 0,60 0,80 1,00 1,20 1,40 1,60 1,80
16x16
Critical speed for TH110
Critical speed for TH110
16x16
16x10 16x16
16x10
16x05 16x10
Vmax [m/s]
16x05
Vmax [m/s]
16x05
Vmax [m/s]
L [mm]
300
500
200
700
600
900
800
400
1100
1300
1500
1200
1600
1400
1000
L [mm]
300
500
200
700
600
900
800
400
1100
1300
1500
1200
1600
1400
1000
L [mm]
300
500
200
700
600
900
800
400
1100
1300
1500
1200
Critical speed TH145
1600
1400
1000
0,80 1,00 1,20 1,40 1,60 1,80 1,40 1,60 1,80 1,20 1,40 1,60 1,80
Fig.35
20x20
Critical speed TH145
Critical speed TH145
20x20
rollon.com
26
20x20
ax [m/s] s]
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