Ball and Roller Bearings - Ntn-snr.com

Multi-Row Cylindrical Roller Bearings
B
r
B
r
r
r
D
d FW
d
D
Ew
d
d
Type NNU
Cylindrical bore Tapered bore
taper 1:12
Type NN
Cylindrical bore Tapered bore
taper 1:12
d 25110mm
Boundary dimensions Basic load ratings Limiting speeds Bearing
dynamic static dynamic static
mm kN kgf rpm type NNU
cylindrical tapered 1
2
d D B r s min C r C or C r C or grease oil bore bore
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
47 16 0.6 25.8 30.0 2,630 3,050 14,000 17,000
55 19 1 31.0 37.0 3,150 3,800 12,000 15,000
62 20 1 38.0 47.5 3,850 4,850 11,000 13,000
68 21 1 43.5 55.5 4,400 5,650 9,700 11,000
75 23 1 52.0 68.5 5,300 7,000 8,800 10,000
80 23 1 53.0 72.5 5,400 7,400 8,000 9,400
90 26 1.1 69.5 96.5 7,050 9,850 7,300 8,600
95 26 1.1 71.0 102 7,250 10,400 6,700 7,900
100 26 1.1 75.0 111 7,650 11,400 6,200 7,300
110 30 1.1 94.5 143 9,650 14,600 5,800 6,800
115 30 1.1 96.5 149 9,850 15,200 5,400 6,300
125 34 1.1 116 179 11,800 18,200 5,100 5,900
130 34 1.1 122 194 12,400 19,800 4,800 5,600
140 37 1.5 143 228 14,600 23,200 4,500 5,300
145 37 1.5 146 238 14,900 24,200 4,300 5,000
140 40 1.1 131 260 13,300 26,500 4,300 5,100 NNU4920 NNU4920K
150 37 1.5 153 256 15,600 26,100 4,000 4,800
145 40 1.1 133 268 13,500 27,400 4,100 4,800 NNU4921 NNU4921K
160 41 2 198 320 20,200 33,000 3,800 4,500
150 40 1.1 137 284 14,000 28,900 3,900 4,600 NNU4922 NNU4922K
170 45 2 229 375 23,300 38,000 3,600 4,300
1 "K" indicates bearings have tapered bore with a taper ratio of 1: 12. 2 Smallest allowable dimension for chamfer dimension r.
B-114