Ball and Roller Bearings - Ntn-snr.com

High Speed Single and Duplex Arrangements
Db
r1a
ra
da
Da
ra
ra
da
Equivalent bearing load
dynamic
PrXFrYFa
Single, DT
DB, DF
Fa
e FaFre FaFre FaFre FaFre
Cor X Y X Y X Y X Y
0.010 0.37
0.020 0.39
0.040 0.41
0.070 0.44
1.51
1.45
1.36
1.28
1.70
1.62
1.52
1.43
2.46
2.35
2.21
2.08
0.10 0.46 1 0 0.44 1.22 1 1.37 0.72 1.98
0.15
0.20
0.30
0.40
0.50
0.49
0.51
0.55
0.56
0.56
1.15
1.10
1.02
1.00
1.00
1.29
1.23
1.15
1.12
1.12
1.87
1.78
1.66
1.63
1.63
static
PorXo FrYo Fa
Single, DT
Xo
0.5
DB, DF
Yo Xo Yo
0.46 1 0.92
For single and DT arrangement,
When PorFr use PorFr
Basic load ratings Limiting speeds 1 Bearing numbers Abutment and fillet dimensions
dynamic static dynamic static (duplex)
(duplex) (duplex) mm
kN kgf rpm
DB DF DT
d a D a D b r as r 1as
C r C or C r C or grease oil min max max max max
80.0 64.5 8,150 6,600 10,000 13,000 DB DF DT 48.5 81.5 84.5 1.5 1
12.3 14.8 1,260 1,510 13,000 17,000 DB DF DT 47.5 55.5 56.8 0.3 0.15
28.1 28.1 2,870 2,870 12,000 16,000 DB DF DT 49.5 63.5 65.5 0.6 0.3
39.5 38.5 4,050 3,950 11,000 15,000 DB DF DT 50.5 69.5 70.5 1 0.6
66.5 57.5 6,750 5,850 10,000 13,000 DB DF DT 52 78 80.5 1 0.6
104 86.0 10,600 8,800 9,000 12,000 DB DF DT 53.5 91.5 94.5 1.5 1
12.8 16.1 1,300 1,640 11,000 15,000 DB DF DT 52.5 62.5 63.8 0.3 0.15
29.8 31.5 3,050 3,250 11,000 14,000 DB DF DT 54.5 67.5 69.5 0.6 0.3
42.0 44.0 4,300 4,450 10,000 13,000 DB DF DT 55.5 74.5 75.5 1 0.6
69.5 63.5 7,100 6,450 9,100 12,000 DB DF DT 57 83 85.5 1 0.6
122 103 12,400 10,500 8,200 11,000 DB DF DT 60 100 104.5 2 1
21.2 25.5 2,160 2,600 10,000 14,000 DB DF DT 57.5 69.5 70.8 0.3 0.15
31.0 35.5 3,150 3,600 9,800 13,000 DB DF DT 60.5 74.5 75.5 1 0.6
55.5 57.5 5,650 5,850 9,200 12,000 DB DF DT 62 83 85.5 1 0.6
86.0 80.0 8,750 8,150 8,300 11,000 DB DF DT 63.5 91.5 94.5 1.5 1
141 121 14,400 12,400 7,500 9,900 DB DF DT 65 110 114.5 2 1
21.8 27.2 2,230 2,770 9,600 13,000 DB DF DT 62.5 75.5 76.8 0.3 0.15
32.5 39.0 3,300 4,000 9,000 12,000 DB DF DT 65.5 79.5 80.5 1 0.6
57.0 61.5 5,800 6,250 8,400 11,000 DB DF DT 67 88 90.5 1 0.6
104 99.0 10,600 10,100 7,700 10,000 DB DF DT 68.5 101.5 104.5 1.5 1
161 141 16,400 14,300 6,900 9,200 DB DF DT 72 118 123 2 1
22.9 29.9 2,340 3,050 8,900 12,000 DB DF DT 69.5 80.5 82.5 0.6 0.3
33.0 40.5 3,350 4,150 8,400 11,000 DB DF DT 70.5 84.5 85.5 1 0.6
60.5 68.5 6,150 7,000 7,800 10,000 DB DF DT 72 93 95.5 1 0.6
113 110 11,600 11,200 7,100 9,500 DB DF DT 73.5 111.5 114.5 1.5 1
182 161 18,600 16,400 6,400 8,500 DB DF DT 77 128 133 2 1
23.5 31.5 2,390 3,250 8,200 11,000 DB DF DT 74.5 85.5 87.5 0.6 0.3
47.0 58.0 4,800 5,900 7,800 10,000 DB DF DT 75.5 94.5 95.5 1 0.6
76.0 86.0 7,750 8,750 7,300 9,700 DB DF DT 77 103 105.5 1 0.6
123 120 12,600 12,300 6,600 8,800 DB DF DT 78.5 116.5 119.5 1.5 1
205 184 20,900 18,700 5,900 7,900 DB DF DT 82 138 143 2 1
24.0 33.5 2,450 3,400 7,700 10,000 DB DF DT 79.5 90.5 92.5 0.6 0.3
47.5 61.0 4,850 6,200 7,300 9,700 DB DF DT 80.5 99.5 100.5 1 0.6
3 For back-to-back and face-to-face duplex arrangements, find with the formula 2F / C .
Note: This bearing has a contact angle of 15and is manufactured with accuracies of JIS Class 5 or higher.
B-59