HR303/22CNSKTapered Roller

Name: NSK HR303/22C Tapered Roller Bearing
Brand: NSK
SKU: HR303/22C

HR303/22C is a NSK tapered roller bearing, bore 22 mm, O.D. 56 mm, width 16 mm, dynamic rating 7,760 lbs. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d22mm

Outside dia. D56mm

Width B16mm

Dynamic Cr7,760lbs

Static C0r7,640lbs

Limiting speed6,700rpm

Weight0.2kg

Cr / C0r1.02

Mean dia. dm39mm

Original catalogue drawing - NSK catalogue, page 127

HR303/22C NSK Tapered Roller bearing catalogue drawing

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	22	0.8661
D	Outside diameter	56	2.2047
B	Inner-ring / bearing width	16	0.6299
T	Overall assembly width	17.25	0.6791
C	Cup / outer-ring width	13	0.5118

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)	22
Bore d (in)	0.8661
Outside dia. D (mm)	56
Outside dia. D (in)	2.2047
Width B (mm)	16
Width B (in)	0.6299
Overall width T (mm)	17.25
Overall width T (in)	0.6791
Cup width C (mm)	13
Cup width C (in)	0.5118

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	7760
Basic static load rating Cor (lbs)	7640
Limiting speed - grease (rpm)	6,700
Limiting speed - oil (rpm)	9,500

Weight

Weight (kg)	0.2

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	1.300
Housing shoulder Da max (in)	1.852
Shaft shoulder db max (in)	1.182

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,200 rpm
4	8,630	102	770
6	5,753	392	2,973
8	4,315	1,024	7,758
10	3,452	2,154	16,321
15	2,301	8,323	63,057

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 34,518 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) 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.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
303/22	FAG	Tapered Roller	22	56	16	38 kN	0.21

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
63/22	NSK	Ball	22	56	16	20.2 kN	0.179
HR303/22	NSK	Tapered Roller	22	56	16	8,320 lbs	0.209

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR303/22	NSK	Tapered Roller	22	56	16	8,320 lbs	0.209
HR303/28	NSK	Tapered Roller	28	68	18	12,400 lbs	0.34
HR303/28C	NSK	Tapered Roller	28	68	18	11,100 lbs	0.336
HR303/32	NSK	Tapered Roller	32	75	20	14,600 lbs	0.445
HR303/32C	NSK	Tapered Roller	32	75	20	13,400 lbs	0.445

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR302/22C	NSK	Tapered Roller	22	50	14	6,110 lbs	0.138
HR320/22XJ	NSK	Tapered Roller	22	44	15	25,600 lbs	0.104
HR322/22	NSK	Tapered Roller	22	50	18	8,210 lbs	0.181
HR322/22C	NSK	Tapered Roller	22	50	18	7,530 lbs	0.177
LM12749/LM12710	NSK	Tapered Roller	22	45.24	16.64	6,570 lbs	0.113
LM12749/LM12711	NSK	Tapered Roller	22	46	16.64	6,570 lbs	0.118
07087/07196	NSK	Tapered Roller	22.23	50.01	14.26	10,000 lbs	0.127
M12649/M12610	NSK	Tapered Roller	21.43	50.01	18.29	8,680 lbs	0.168

Request a quotation for HR303/22C

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.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516