NTN - Precision Rolling Bearings

Main Spindle Bearings
ras
ras
ras
daDa
r1as
dbDa
Dynamic equivalent radial loadPrXFrYFa
Single row / Tandem Back-to-back / Face-to-face
e Fa Fre Fa Fre Fa Fre Fa Fre
X Y X Y X Y X Y
0.68 1 0 0.41 0.87 1 0.92 0.67 1.41
Back-to-back
(DB)
Face-to-face
(DF)
Static equivalent radial loadPorXo FrYo Fa
Single row / Tandem Back-to-back / Face-to-face
Xo Yo Xo Yo
0.5 0.38 1 0.76
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
22.1 0.26 54.1 53.3 65.0 50.5 49.5 69.5 1 0.6 2LA-BNS009ADLLB
23.3 0.28 58.4 57.6 70.5 55.5 54.5 74.5 1 0.6 2LA-BNS010ADLLB
26.0 0.41 65.2 64.2 78.7 62 59.5 83 1 0.6 2LA-BNS011ADLLB
27.2 0.44 70.1 69.2 83.5 67 64.5 88 1 0.6 2LA-BNS012ADLLB
28.4 0.47 75.2 74.2 88.2 72 69.5 93 1 0.6 2LA-BNS013ADLLB
31.1 0.66 81.9 80.9 96.8 77 74.5 103 1 0.6 2LA-BNS014ADLLB
32.3 0.69 86.8 85.9 102.2 82 79.5 108 1 0.6 2LA-BNS015ADLLB
35.1 0.94 93.7 92.6 110.2 87 84.5 118 1 0.6 2LA-BNS016ADLLB
36.2 0.98 98.6 97.6 115.4 92 89.5 123 1 0.6 2LA-BNS017ADLLB
39.0 1.29 105.3 104.2 123.2 98.5 95.5 131.5 1.5 1 2LA-BNS018ADLLB
40.2 1.34 110.4 109.2 128.1 103.5 100.5 136.5 1.5 1 2LA-BNS019ADLLB
41.3 1.40 115.4 114.2 132.7 108.5 105.5 141.5 1.5 1 2LA-BNS020ADLLB
177