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FAFNIR BALLSCREW SUPPORT BEARINGS

BSBU D Standard and Heavy Duty Bearings

The BSBU D series of bearing cartridge units were designed and developed to give the machine manufacturer a ready made unit providing excellent stiffness and accuracy in ballscrew applications. The unit incorporates a flange enabling it to be bolted to a flat surface perpendicular to the ballscrew axis.

These units combine the features of MM-BS-DU (Duplex) ballscrew bearings with an accurately manufactured housing and laminar ring seals.

Each unit is prepacked with a measured quantity of high quality bearing grease and requires no further lubrication.

Units are supplied with the bearings in pairs or quad sets mounted in the “DB” (“O”) arrangement. Other bearing arrange- ments can be accommodated if required and in these cases please contact us with details of your requirements.

Consult our Engineering Department for recommended shaft and housing fits.

STANDARD SERIES – DIMENSIONAL TOLERANCES 0.005" (.13 MM) UNLESS OTHERWISE STATED.

Shaft

Unit

Diam.

Number

mm 17

BSBU17D60

C

d

d1

in. mm

in. mm

in. mm

1.85

0.6693 0.6691 17.000 16.996

0.17

47.0

4.3

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

in. mm

lbs. kg

0.26

1.42

2.3622 2.3617 60.000 59.987

1.02

2.52

3.54

1.742 1.702 44.26 43.24

1.67

1.26

0.51

2.99

1.26

2.42

6.6

36.0

26.0

64.0

90.0

42.5

32.0

13.0

76.0

32.0

1.1

d2

d3

D

D1

D

2

D

3

E

F

K

L

N

P

Wt.

20

BSBU20D60

1.85

0.7874 0.7872 20.000 19.996

0.17

0.26

1.42

2.3622 2.3617 60.000 59.987

1.02

2.52

3.54

1.742 1.702 44.26 43.24

1.67

1.26

0.51

2.99

1.26

2.42

47.0

4.3

6.6

36.0

26.0

64.0

90.0

42.5

32.0

13.0

76.0

32.0

1.1

25

BSBU25D80

30

BSBU30D80

35

BSBU35D90

40

BSBU40D90

2.05

0.9842 0.9841 25.000 24.996

0.17

52.0

4.3

2.05

1.1811 1.1809 30.000 29.996

0.17

52.0

4.3

2.05

1.378 1.3778 35.000 34.995

0.17

52.0

4.3

2.05

1.5748 1.5746 40.000 39.995

0.17

52.0

4.3

0.36

1.97

9.2

50.0

0.36

1.97

9.2

50.0

0.36

2.36

9.2

60

0.36

2.36

9.2

60.0

3.1496 3.1491 80.000 79.987

1.57

40.0

3.1496 3.1491 80.000 79.987

1.57

40.0

3.5433 3.5427 90.000 89.985

3.5433 3.5427 90.000 89.985

1.81

46

1.81

46.0

3.46

4.72

88.0

120.0

3.46

4.72

88.0

120.0

3.86

5.12

98

130

3.86

5.12

98

130.0

1.979 1.938 50.26 49.24

2.34

59.5

1.979 1.938 50.26 49.24

2.34

59.5

1.979 1.938 50.26 49.24

1.979 1.938 50.26 49.24

2.62

66.5

2.62

66.5

1.26

0.59

4.02

1.73

5.06

32.0

15.0

102.0

44.0

2.3

1.26

0.59

4.02

1.73

4.84

32.0

15.0

102.0

44.0

2.2

1.26

0.59

4.45

1.93

7.04

32.0

15.0

113.0

49

3.2

1.26

0.59

4.45

1.93

6.82

32.0

15.0

113.0

49

3.1

92

102800

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