HR303/32C is a NSK tapered roller bearing, bore 32 mm, O.D. 75 mm, width 20 mm, dynamic rating 13,400 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
32
1.2598
D
Outside diameter
75
2.9528
B
Inner-ring / bearing width
20
0.7874
T
Overall assembly width
21.75
0.8563
C
Cup / outer-ring width
16
0.6299
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)
32
Bore d (in)
1.2598
Outside dia. D (mm)
75
Outside dia. D (in)
2.9528
Width B (mm)
20
Width B (in)
0.7874
Overall width T (mm)
21.75
Overall width T (in)
0.8563
Cup width C (mm)
16
Cup width C (in)
0.6299
Load ratings & speeds
Basic dynamic load rating Cr (lbs)
13400
Basic static load rating Cor (lbs)
15400
Limiting speed - grease (rpm)
5,000
Limiting speed - oil (rpm)
6,700
Weight
Weight (kg)
0.445
Mounting dimensions (fillets / shoulders)
Chamfer r (in)
0.039
Shaft shoulder da min (in)
1.694
Housing shoulder Da max (in)
2.600
Shaft shoulder db max (in)
1.694
Bearing life (ISO 281 basic rating life)
C / P
Equivalent load P (N)
L10 (106 rev)
L10h at 1,600 rpm
4
14,902
102
1,058
6
9,934
392
4,089
8
7,451
1,024
10,667
10
5,961
2,154
22,442
15
3,974
8,323
86,703
Basic rating life per ISO 281: L10 = (C/P)10/3 with C = 59,606 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.
