HR30309C is a NSK tapered roller bearing, bore 45 mm, O.D. 100 mm, width 25 mm, dynamic rating 23,200 lbs. Dimensions, drawing, interchanges and price.
Original catalogue drawing - NSK catalogue, page 127
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
45
1.7717
D
Outside diameter
100
3.937
B
Inner-ring / bearing width
25
0.9843
T
Overall assembly width
27.25
1.0728
C
Cup / outer-ring width
19
0.748
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)
45
Bore d (in)
1.7717
Outside dia. D (mm)
100
Outside dia. D (in)
3.9370
Width B (mm)
25
Width B (in)
0.9843
Overall width T (mm)
27.25
Overall width T (in)
1.0728
Cup width C (mm)
19
Cup width C (in)
0.7480
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
23200
Basic static load rating Cor (lbs)
26300
Limiting speed - grease (rpm)
3,600
Limiting speed - oil (rpm)
5,000
Weight
Weight (kg)
0.984
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.059
Shaft shoulder da min (in)
2.246
Housing shoulder Da max (in)
3.583
Shaft shoulder db max (in)
2.246
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,200 rpm
4
25,800
102
1,411
6
17,200
392
5,451
8
12,900
1,024
14,222
10
10,320
2,154
29,923
15
6,880
8,323
115,604
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 103,199 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 inch product catalogue
Catalogue page
p.129 (dimensions) / p.130 (ratings)
Dimensions in inches and millimetres, load ratings in lbs.
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.
