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MACHINE TOOL SPINDLE SPINDLE BEARINGS
Ball Screw Support Bearings - Inch Series
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Notes:
- Standard Preload: Heavy
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Add “DU” for Universal Duplex, “TU” for
Triplex, or "QU" for Quadruplex sets as a
suffix to basic part number.
- All bearings are universally ground D and can be
mounted DU (Universal), DF (Face-to-Face, or DB
(Back-to-Back), in pairs or in various combinations —
three, four or more bearings as required (see bottom of
page for diagrams).
- For Duplex, Triplex and Quadruplex sets, multiply
width and preload indicated by 2, 3, or 4 respectively.
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Click on part number to check availability.
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BALL SCREW SUPPORT - INCH SERIES |
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Bore
"d" |
OD
"D" |
Width
"B" |
Alpine Bearing
Part No. |
Load Ratings
Lbs |
Speed Ratings RPM |
Standard Preload lbs |
|
Static |
Dynamic |
| 0.78740 |
1.85039 |
0.6250 |
BS-078 |
5600 |
5600 |
3600 |
700 |
| 0.93750 |
2.44094 |
0.6250 |
BS-093 |
8000 |
6500 |
2800 |
1000 |
| 0.98425 |
2.44094 |
0.6250 |
BS-098 |
8000 |
6500 |
2800 |
1000 |
| 1.50000 |
2.83465 |
0.6250 |
BS-150 |
10000 |
8000 |
2400 |
1400 |
| 1.75000 |
3.00000 |
0.6250 |
BS-175 |
11500 |
8500 |
2100 |
1500 |
| 2.25000 |
3.54331 |
0.6250 |
BS-225 |
13500 |
9100 |
1700 |
1800 |
| 3.00000 |
4.33071 |
0.6250 |
BS-300 |
17000 |
10000 |
1300 |
2200 |
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BALL SCREW SUPPORT - INCH SERIES |
Interchange Information
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ALPINE |
BARDEN |
FAFNIR |
NHBB |
NSK |
RHP |
SKF |
| BS-078 |
L078H |
MM9306WI-2H |
BS-078 |
20 TAC 47X |
BSB078 |
BDAB634200 |
| BS-093 |
L093H |
MM9308WI-2H |
BS-093 |
23 TAC 62A |
BSB093 |
BDAB634201 |
| BS-098 |
- |
- |
BS-098 |
- |
- |
- |
| BS-150 |
L150H |
MM9310WI-2H |
BS-150 |
38 TAC 72A |
BSB150 |
BDAB634202 |
| BS-175 |
L175H |
MM9311WI-3H |
BS-175 |
44 TAC 76A |
BSB175 |
BDAB634203 |
| BS-225 |
L225H |
MM9313WI-5H |
BS-225 |
57 TAC 90A |
BSB225 |
BDAB634204 |
| BS-300 |
L300H |
MM9316WI-3H |
BS-300 |
 76 TAC
110A |
BSB300 |
BDAB634205 |
Diagrams
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