Maximum Speed

The DN value does not take lead and ball size into consideration. In general, ball screws with very small balls have somewhat lower speed limits than screws with larger balls. We strongly recommend observing the speeds in the three tables below instead of DN values.

Steinmeyer has however the ability to increase speed ratings beyond these values. Please inquire.

Maximum speeds [rpm] ground ball screws nominal diameter 3 - 16 mm (rolled ball screws 30% lower)

P

d 3mm

d 5mm

d 6mm

d 8mm

d 10mm

d 12mm

d 16mm

0,5

4500

2900

2900

1800

-

-

-

1

4500

4500

4500

3000

2000

2000

-

1,5

-

4500

4500

3500

2500

2500

-

2

-

4500

4500

4500

3700

3700

2800

2,5

-

4500

4500

4500

4000

4000

3500

3

-

4500

4500

4500

4500

4500

4000

4

-

-

4500

4500

4500

4500

4300

5

-

-

4500

4500

4500

4500

4300

6

-

-

4500

4500

4500

4500

4300

8

-

-

-

4500

4500

4500

4300

10

-

-

-

-

4500

4500

4300

12

-

-

-

-

-

4500

4300

15

-

-

-

-

-

4500

4300

20

-

-

-

-

-

4500

4300

25

-

-

-

-

-

-

4300

30

-

-

-

-

-

-

4300

Maximum speeds [rpm] ground ball screws nominal diameter 20 - 125 mm (rolled ball screws 30% lower)

First number: Maximum speed with internal ball return (1XXX)
Second number: Maximum speed with external ball return (3XXX)

P

d 20mm

d 25mm

d 28mm

d 32mm

d 36mm

d 40mm

d 50mm

d 60mm

d 63mm

2

2200

1800

-

-

-

-

-

-

-

2,5

4100

2500

-

-

-

-

-

-

-

3

4100

3000

-

-

-

-

-

-

-

4

4100

3600

-

2800

-

-

-

-

-

5

4100

3800

3800

3300

3300

2600

2100

-

1700

6

4100

3800

3800

3400

3400

3000

2200

-

1700

8

4100

3800

3800

3400

3400

3000

2400

-

1800

10

4100

3800

3800

3400

3400

3000

2500

-

2000

12

4100

3800

3800

3500

3500

3000

2500

-

2000

15

4100

3800

3800

3600

3600

3000

2500

-

2000

20

4100

4000

4000

4000

4000

3000/4000

2500/3000

-

2000/2500

25

4100

4000

4000

4000

4000

4000

3000

2500

2000

30

4100

4000

4000

4000

4000

4000

3000

2500

2000

35

4100

4000

-

-

-

4000

3000

2500

2000

40

4100

4000

-

-

-

4000

3000

2500

2000

50

-

4000

-

-

-

-

3000

2500

-

P

d 80mm

d 100mm

d 125mm

2

-

-

-

2,5

-

-

-

3

-

-

-

4

-

-

-

5

1200

1000

800

6

1200

1000

800

8

1200

1000

800

10

1500

1200

1000

12

1500

1200

1000

15

1500

1200

1000

20

1500

1600

1000

25

2000

1600

1200

30

2000

1600

1200

35

2000

1600

1200

40

2000

1600

1200

50

2000

1600

-

Maximum speeds for UltraThrust ball screws diameter 32 - 125 mm [rpm]

P

d 32mm

d 36mm

d 40mm

d 50mm

d 63mm

d 80mm

d 100mm

d 125mm

10

3000

3000

3000

2500

-

-

-

-

12

3000

-

3000

2500

-

-

-

-

16

-

-

-

2500

2000

-

-

-

20

-

-

-

-

2000

1500

1200

1000

25

2000

1500

1200

1000

       

30

-

-

3500

-

-

-

-

-

40

-

-

-

2800

2200

1800

1400

1100

50

-

-

-

-

-

1800

1400

1100

Technical Tip

DN values only yield a preliminary idea of the maximum speed, because there are more factors than just the nominal diameter and the type of ball return that affect speed rating. Specifically the mass of balls plays an important role, which is not reflected in DN ratings. Also, the DN method to determine maximum speeds is not applicable for very small screws.