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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