High Precision Ball Bearings - Kraftmek
High Precision Ball Bearings - Kraftmek
High Precision Ball Bearings - Kraftmek
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Spindle bearings<br />
The following notations are used in the bearing tables:<br />
d [mm] Bore diameter<br />
D [mm] Outer diameter<br />
B [mm] Width single bearing<br />
r s min [mm] Chamfer<br />
r’ s min [mm] Chamfer<br />
open side (spindle bearing)<br />
a [mm] Width of ring groove for SMI-lubrication<br />
D w [mm] <strong>Ball</strong> diameter<br />
Z pieces <strong>Ball</strong> complement<br />
m [kg] Weight of bearing<br />
d 1 [mm] Outer diameter inner ring<br />
d 2 [mm] Land inner ring, open side<br />
d k [mm] Cage bore<br />
d m [mm] Pitch circle diameter<br />
D 1 [mm] Bore outer ring<br />
D 2 [mm] Bore outer ring<br />
(open side)<br />
n [1/min] Speed value<br />
C [N] Dynamic load rating<br />
C 0 [N] Static load rating<br />
F v [N] Preload<br />
F a max [N] Lift off force<br />
C ax [N/micron] Axial rigidity (pair)<br />
F f [N] Minimum spring preload<br />
0 [°] Contact angle<br />
D<br />
D1<br />
dm<br />
d<br />
rs<br />
B<br />
r s r’ s<br />
KH…<br />
0<br />
r’s<br />
d1<br />
dk<br />
S618…; S619…; S60…; S62…<br />
r s<br />
D2<br />
Minimum depth of ring groove 0.5 mm<br />
B<br />
r’ s<br />
B<br />
r s<br />
r s<br />
r’ s<br />
0<br />
0<br />
r’ s<br />
d2<br />
rs<br />
rs<br />
r s<br />
D<br />
d<br />
D<br />
SMI 60…<br />
rs<br />
D1<br />
dm<br />
d2<br />
d<br />
a<br />
0<br />
0<br />
r’s<br />
d1<br />
dk<br />
D2<br />
Spindle bearings<br />
d2<br />
BHT60…; BNT62…<br />
BHT…X<br />
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