Scanned from the manufacturer catalogue page listing this part number. All part numbers printed on that table share the same drawing.
Scale cross-section
Blue = inner / outer ring, yellow = rolling element. Drawn to scale from this part's own
dimensions for selection reference only - not a manufacturing or assembly drawing.
Dimension table (mm / inch)
Symbol
Dimension
mm
inch
d
Bore diameter
55
2.1654
D
Outside diameter
120
4.7244
B
Inner-ring / bearing width
29
1.1417
T
Overall assembly width
31.5
1.2402
C
Cup / outer-ring width
21
0.8268
r
Chamfer (min)
2
0.0787
Notes
Weights are given in kg. Load ratings are shown in both the original catalogue units and the converted value (1 N = 0.2248 lbf). Data is provided for selection reference only - confirm against the latest official catalogue before ordering.
Main dimensions
Bore d (mm)
55
Outside dia. D (mm)
120
Width B (mm)
29
Overall width T (mm)
31.5
Cup width C (mm)
21
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
36194
Basic static load rating Cor (lbs)
34396
Basic dynamic load rating Cr (N)
161000
Basic static load rating C0r (N)
153000
Limiting speed - grease (rpm)
2,800
Effective load centre a (mm)
2.5
Weight
Weight (kg)
1.58
Mounting dimensions (fillets / shoulders)
Housing fillet r max (mm)
2
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 900 rpm
4
40,250
102
1,881
6
26,833
392
7,268
8
20,125
1,024
18,963
10
16,100
2,154
39,897
15
10,733
8,323
154,138
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 161,000 N. Hours = L10 x 106 / (60n). Life-modification factors for lubrication, contamination and temperature (aISO) are not included.
Source & traceability
Brand
NSK
Source catalogue
NSK CAT. No. E1103 (metric)
Catalogue page
p.264 (dimensions)
Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.
Send us the quantity you need and we will come back with price and
lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.
