NTN - Precision Rolling Bearings

Main Spindle Bearings
ras
ras
daDa
ras
r1as
dbDa
Dynamic equivalent radial load
PrXFrYFa
Single row / Tandem Back-to-back / Face-to-face
ifoFa
e FaFre FaFre FaFre FaFre
Cor
X Y X Y X Y X Y
0.178 0.35
0.357 0.36
0.714 0.38
1.57
1.53
1.46
1.76
1.71
1.64
2.56
2.48
2.38
1.07 0.4
1.42 1.59 2.31
1.43 0.41 1 0 0.44 1.38 1 1.55 0.72 2.25
2.14
3.57
5.35
7.14
0.43
0.44
0.47
0.49
1.33
1.25
1.18
1.13
1.49
1.4
1.32
1.26
2.16
2.03
1.92
1.83
Back-to-back
(DB)
Face-to-face
(DF)
Static equivalent radial load
PorXo FrYo Fa
Single row / Tandem Back-to-back / Face-to-face
Xo
0.52
Yo Xo Yo
0.54 1.04 1.08
When Por Fr with single-row or tandem
arrangement, Por Fr.
Load Mass Reference dimensions Abutment and fillet dimensions Part
center
number
mm kg mm
Single-row da db Da ras r1as
a (approx.) d1 d2 D1 min min max max max
14.2 0.14 56.9 56.0 65.0 54.5 52.5 67.5 0.6 0.3 5S-2LA-BNS910CLLB
15.6 0.18 62.6 61.7 72.1 60.5 59.5 74.5 1 0.6 5S-2LA-BNS911CLLB
16.3 0.20 67.6 66.7 77.1 65.5 64.5 79.5 1 0.6 5S-2LA-BNS912CLLB
16.9 0.21 72.6 71.7 82.1 70.5 69.5 84.5 1 0.6 5S-2LA-BNS913CLLB
19.5 0.36 79.2 78.3 90.2 75.5 74.5 94.5 1 0.6 5S-2LA-BNS914CLLB
20.1 0.37 84.2 83.3 95.2 80.5 79.5 99.5 1 0.6 5S-2LA-BNS915CLLB
20.8 0.39 89.2 88.3 100.2 85.5 84.5 104.5 1 0.6 5S-2LA-BNS916CLLB
22.8 0.57 96.0 95.0 108.6 92 89.5 113 1 0.6 5S-2LA-BNS917CLLB
23.5 0.59 100.9 100.0 113.6 97 94.5 118 1 0.6 5S-2LA-BNS918CLLB
24.2 0.62 105.9 105.0 118.6 102 99.5 123 1 0.6 5S-2LA-BNS919CLLB
26.2 0.82 111.9 110.9 127.3 107 104.5 133 1 0.6 5S-2LA-BNS920CLLB
179