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FAFNIR BALLSCREW SUPPORT BEARINGS

Ball Screw Support Series

The recommended maximum limitations on ballscrew bearing speed limits are based on 50% active duty cycle and a ten minute total cycle period. Speed limitations may be increased somewhat with lighter duty cycles. Please consult our Engineering Department regarding bearing speeds and duty cycles.

d

D

C (WIDTH) X 4

Quadruplex Mounting

lbs(per set)

N

1400 1400 1400

6230 6230 6230

1200

5400

2000 2000 2000

8900 8900 8900

2800 2800 2800 2800

12450 12450 12450 12450

3000 3000

13340 13340

3600 3600 3600 3600

16010 16010 16010 16010

5800 5800 5800 5800

25800 25800 25800 25800

4400 4400

19570 19570

7000 7000

31140 31140

9600 9600

42700 42700

12000

53380

MM9310WI2HQUH

0.62

0.281

20,400

90,700

13,200

58,700

2,100

14.4

2520

7.78

0.879

MM30BS72QUH

0.70

0.317

20,400

90,700

13,200

58,700

2,100

14.4

2520

7.78

0.879

MM35BS72QUH

0.63

0.287

20,400

90,700

13,200

58,700

2,100

14.4

2520

7.78

0.879

MM40BS72QUH

0.56

0.252

20,400

90,700

13,200

58,700

2,100

14.4

2520

7.78

0.879

MM9306WI2HQUH

0.28

0.129

11,200

49,800

9,100

40,500

MM17BS47QUH

0.29

0.132

11,200

49,800

9,100

40,500

MM20BS47QUH

0.27

0.122

11,200

49,800

9,100

40,500

MM35BS100QUH

1.90

0.862

42,000

186,800

26,000

115,600

MM40BS100QUH

1.80

0.816

42,000

186,800

26,000

115,600

MM45BS100QUH

1.68

0.763

42,000

186,800

26,000

115,600

MM50BS100QUH

1.55

0.705

42,000

186,800

26,000

115,600

3,700

8.6

1510

5.66

0.639

3,700

8.6

1510

5.66

0.639

3,700

8.6

1510

5.66

0.639

1,400

20.0

3500

18.06

2.040

1,400

20.0

3500

18.06

2.040

1,400

20.0

3500

18.06

2.040

1,400

20.0

3500

18.06

2.040

Bearing

Weight

Static Limiting Thrust

Extended Thrust

Number

Per Bearing

Capacity

Dynamic Axial

MM9308WI2HQUH

0.56

0.252

16,000

71,200

10,900

48,500

MM25BS62QUH

0.51

0.233

16,000

71,200

10,900

48,500

MM30BS62QUH

0.46

0.208

16,000

71,200

10,900

48,500

MM9313WI5HQUH

0.80

0.361

MM40BS90QUH

1.09

0.496

MM50BS90QUH

0.91

0.413

MM55BS90QUH

0.80

0.364

MM9321WI3QUH

2.60

1.178

MM100BS150QUH

2.83

1.284

27,400

121,900

15,100

67,200

27,400

121,900

15,100

67,200

27,400

121,900

15,100

67,200

27,400

121,900

15,100

67,200

60,000

266,900

27,600

122,800

60,000

266,900

27,600

122,800

2,700

12.0

2100

7.78

0.879

2,700

12.0

2100

7.78

0.879

2,700

12.0

2100

7.78

0.879

1,700

19.0

3330

14.52

1.640

1,700

19.0

3330

14.52

1.640

1,700

19.0

3330

14.52

1.640

1,700

19.0

3330

14.52

1.640

1,200

24.6

4310

24.08

2.721

1,200

24.6

4310

24.08

2.721

MM25BS52QUH

0.31

0.140

12,200

54,300

9,500

42,300

MM9311WI3HQUH

0.63

0.284

MM45BS75QUH

0.55

0.248

MM55BS120QUH

2.49

1.128

MM60BS120QUH

2.33

1.058

22,800

101,400

14,100

62,700

22,800

101,400

14,100

62,700

52,000

231,300

21,000

93,400

52,000

231,300

21,000

93,400

RPM

106 lbs/in

106 N/m

in-lbs

N-m

3,700

8.9

1560

4.34

0.490

1,800

15.8

2770

9.92

1.121

1,800

15.8

2770

9.92

1.121

900

38.8

6790

38.60

4.361

900

38.8

6790

38.60

4.361

PHYSICAL CHARACTERISTICS – LOAD RATINGS

MM9326WI6HQUH

3.85

1.748

  • *

    Heavy preload is the standard.

84,000

373,600

34,400

153,000

600

41.4

7250

70.20

7.931

MM9316WI3HQUH

1.04

0.472

MM75BS110QUH

1.02

0.463

34,600

153,900

16,200

72,100

34,600

153,900

16,200

72,100

1,200

23.8

4170

17.70

2.000

1,200

23.8

4170

17.70

2.000

Quadruplex

Heavy (QUH)

RADIAL LOAD RATING AT 33 13 RPM

lbs

Load Ratings

Based on 1500 hour

s L10

Life and Permissible Speed

kg

N

Maximum

Axial Spring

Speed

Constant

N

lbs

Cae

Drag Torque of Preloaded Set

Preload *

lbs

Tl

90

102800

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