Timken Super Precision Bearings for Machine Tool Applications

SUPER PRECISION
2
C
BALL SCREW SUPPORT BEARING
CARTRIDGE UNITS
BSBU D – STANDARD AND HEAVY-DUTY BEARINGS
• Designed and developed to give the machine manufacturer
a ready-made unit providing excellent stiffness and accuracy
in ball screw applications.
• Units combine the features of MM-BS-DU (Duplex) ball screw
support 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 mounted in the
“DB” (“O”) arrangement.
• Other bearing arrangements can be accommodated if required.
Please consult your Timken representative with details of your
requirements or for suggested shaft and housing fits.
• For load and speed ratings, refer to bearing data on page 203.
STANDARD SERIES – DIMENSIONAL TOLERANCES ± 0.13 mm ( ± 0.005 in.) UNLESS OTHERWISE STATED.
P
45˚
80
Q
30
10 HOLES 'd2' EQUISPACED ON 'N' B.C. DIA.
4 HOLES 'd1' EQUISPACED ON 'F' B.C. DIA.
BSBU
30˚
0.0002
0.0004
A
1 x 45˚
D
D 1
d
A
A
K
L
E
C
d 3
D 2
D 3
Shaft
Dia.
Unit Number
(Bearing Set) C d d 1 d 2 d 3 D D 1 D 2 D 3 E F K L N P Wt.
mm mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
17 BSBU17D60 47.0 17.000 4.3 6.6 36.0 60.000 26.0 64.0 90.0 44.26 42.5 32.0 13.0 76.0 32 1.1
16.996 59.987 43.24
(MM17BS47DUH) 1.85 0.6693 0.17 0.26 1.42 2.3622 1.02 2.52 3.54 1.742 1.67 1.26 0.51 2.99 1.26 2.42
0.6691 2.3617 1.702
20 BSBU20D60 47.0 20.000 4.3 6.6 36.0 60.000 26.0 64.0 90.0 44.26 42.5 32.0 13.0 76.0 32 1.1
19.996 59.987 43.24
(MM20BS47DUH) 1.85 0.7874 0.17 0.26 1.42 2.3622 1.02 2.52 3.54 1.742 1.67 1.26 0.51 2.99 1.26 2.42
0.7872 2.3617 1.702
25 BSBU25D80 52.0 25.000 4.3 9.2 50.0 80.000 40.0 88.0 120.0 50.26 59.5 32.0 15.0 102.0 44 2.3
24.996 79.987 49.24
(MM25BS62DUH) 2.05 0.9842 0.17 0.36 1.97 3.1496 1.57 3.46 4.72 1.979 2.34 1.26 0.59 4.02 1.73 5.06
0.9841 3.1491 1.938
30 BSBU30D80 52.0 30.000 4.3 9.2 50.0 80.000 40.0 88.0 120.0 50.26 59.5 32.0 15.0 102.0 44 2.2
29.996 79.987 49.24
(MM30BS62DUH) 2.05 1.1811 0.17 0.36 1.97 3.1496 1.57 3.46 4.72 1.979 2.34 1.26 0.59 4.02 1.73 4.84
1.1809 3.1491 1.938
35 BSBU35D90 52.0 35.000 4.3 9.2 60.0 90.000 46.0 98.0 130.0 50.26 66.5 32.0 15.0 113.0 49 3.2
34.995 89.985 49.24
(MM35BS72DUH) 2.05 1.378 0.17 0.36 2.36 3.5433 1.81 3.86 5.12 1.979 2.62 1.26 0.59 4.45 1.93 7.04
1.3778 3.5427 1.938
40 BSBU40D90 52.0 40.000 4.3 9.2 60.0 90.000 46.0 98.0 130.0 50.26 66.5 32.0 15.0 113.0 49 3.1
39.995 89.985 49.24
(MM40BS72DUH) 2.05 1.5748 0.17 0.36 2.36 3.5433 1.81 3.86 5.12 1.979 2.62 1.26 0.59 4.45 1.93 6.82
1.5746 3.5427 1.938
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
in.
kg
lbs.
A
HEAVY-DUTY SERIES
35 BSBU35D124 66.0 35.000 5.3 11.4 76.0 124.000 66.0 128.0 165.0 64.26 90.0 43.5 17.0 146.0 64 6.3
34.995 123.982 63.24
(MM35BS100DUH) 2.60 1.3780 0.21 0.45 2.99 4.8819 2.60 5.04 6.50 2.530 3.54 1.71 0.67 5.75 2.52 13.86
1.3778 4.8812 2.490
40 BSBU40D124 66.0 40.000 5.3 11.4 76.0 124.000 66.0 128.0 165.0 64.26 90.0 43.5 17.0 146.0 64 6.1
39.995 123.982 63.24
(MM40BS100DUH) 2.60 1.5748 0.21 0.45 2.99 4.8819 2.60 5.04 6.50 2.530 3.54 1.71 0.67 5.75 2.52 13.42
1.5746 4.8812 2.490
45 BSBU45D124 66.0 45.000 5.3 11.4 76.0 124.000 66.0 128.0 165.0 64.26 90.0 43.5 17.0 146.0 64 6.0
44.995 123.982 63.24
(MM45BS100DUH) 2.60 1.7716 0.21 0.45 2.99 4.8819 2.60 5.04 6.50 2.530 3.54 1.71 0.67 5.75 2.52 13.20
1.7714 4.8812 2.490
50 BSBU50D124 66.0 50.000 5.3 11.4 76.0 124.000 66.0 128.0 165.0 64.26 90.0 43.5 17.0 146.0 64 5.9
49.995 123.982 63.24
(MM50BS100DUH) 2.60 1.9685 0.21 0.45 2.99 4.8819 2.60 5.04 6.50 2.530 3.54 1.71 0.67 5.75 2.52 12.89
1.9683 4.8812 2.490
206 TIMKEN MACHINE TOOL CATALOG