Timken Super Precision Bearings for Machine Tool Applications

SUPER PRECISION
B
TSF STYLE
PRECISION LEVEL 3 (1)
Dimensional Sizes – INCH
• Flanged outer ring facilitates axial location.
• Features to enhance spindle operation:
• Matched components.
• Runout high point markings.
• Bearing setting adjustment.
r
D
Db
d a
d
T 1
c 2
c
R
B
d b
D a
D 1
a
d
Bore
mm
in.
D
O.D.
mm
in.
T 1
Offset
mm
in.
C o
Static
kN
lbs.
Load Ratings
C 1
Dynamic (3) C 90
Dynamic (4)
kN
lbs.
kN
lbs.
C a90
Dynamic (4)
kN
lbs.
D 1
Flange
Dia.
mm
in.
C 2
Flange
Width
mm
in.
B
Cone
Width
mm
in.
C
Cup
Width
mm
in.
a
Eff.
Center (2)
mm
in.
Inner-Outer
Part Number
46.038 85.000 9.525 117.0 86.4 22.4 13.3 89.8 4.8 25.608 20.638 -6.4 2984 - 2924-B
1.8125 3.3465 0.3750 26200 19400 5040 2980 3.53 0.19 1.0082 0.8125 -0.25 0.0
66.675 112.712 11.112 191.0 129.0 33.3 22.9 117.4 4.8 30.048 23.812 -4.6 3984 - 3920-B 2.
2.6250 4.4375 0.4375 43000 28900 7490 5160 4.62 0.19 1.1830 0.9375 -0.18 0.0
69.850 120.000 11.095 186.0 133.0 34.4 22.7 125.4 5.5 29.007 24.237 -4.1 482 - 472-B 2.
2.7500 4.7244 0.4368 41900 29900 7740 5100 4.94 0.22 1.1420 0.9542 -0.16 0.0
69.850 127.000 14.288 262.0 182.0 47.1 29.4 133.2 6.4 36.170 28.575 -8.1 566 - 563-B 2.
2.7500 5.0000 0.5625 58900 40900 10600 6600 5.25 0.25 1.4240 1.1250 -0.32 0.0
73.025 117.475 11.112 197.0 128.0 33.2 24.8 122.1 4.8 30.162 23.812 -2.8 33287 - 33462-B 3.
2.8750 4.6250 0.4375 44300 28800 7470 5570 4.81 0.19 1.1875 0.9375 -0.11 0.1
83.345 125.412 10.317 178.0 109.0 28.1 20.0 130.1 4.8 25.400 19.845 0.5 27690 - 27620-B 3.
3.2813 4.9375 0.4062 39900 24400 6320 4500 5.12 0.19 1.0000 0.7813 0.02 0.1
88.900 149.225 12.700 241.0 151.0 39.1 33.0 154.7 5.6 28.971 24.608 3.0 42350 - 42587-B 3.
3.5000 5.8750 0.5000 54300 33900 8790 7410 6.09 0.22 1.1406 0.9688 0.12 0.1
95.250 168.275 18.255 386.0 245.0 63.5 51.2 175.3 7.1 41.275 30.162 -2.8 683 - 672-B 3.
3.7500 6.6250 0.7187 86700 55100 14300 11500 6.90 0.28 1.6250 1.1875 -0.11 0.1
101.600 168.275 18.255 386.0 245.0 63.5 51.2 175.3 7.1 41.275 30.162 -2.8 687 - 672-B 3.
4.0000 6.6250 0.7187 86700 55100 14300 11500 6.90 0.28 1.6250 1.1875 -0.11 0.1
114.300 190.500 20.638 543.0 337.0 87.3 62.2 198.3 7.9 49.212 34.925 -6.6 71450 - 71750-B 3.
4.5000 7.5000 0.8125 122000 75700 19600 14000 7.81 0.31 1.9375 1.3750 -0.26 0.1
(1) Tighter tolerances are possible on any of the part numbers shown for higher precision requirements.
(2) Negative value indicates effective center within the backface of the cone.
(3) The Timken Company calculation based on one million revolutions for L 10 life.
(4) The Timken Company life calculations based on 90 million revolutions for L 10 life. C 90 is radial load component force; C a90 is axial component.
(5) For synthetic high-speed grease in appropriate fill quantities with service interval and appropriate setting. Other methods may further improve speed by as much as 60 percent or more.
(6) For explanation of spindle system characteristics, please refer to pages 31-34 of the Engineering Section.
118 TIMKEN MACHINE TOOL CATALOG