HR32221NSKTapered Roller

Name: NSK HR32221 Tapered Roller Bearing
Brand: NSK
SKU: HR32221

HR32221 is a NSK tapered roller bearing, bore 105 mm, O.D. 190 mm, width 50 mm, dynamic rating 445 kN. Dimensions, drawing, interchanges and price.

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Bore d105mm

Outside dia. D190mm

Width B50mm

Dynamic Cr445kN

Static C0r510kN

Limiting speed1,900rpm

Weight6.25kg

Cr / C0r0.87

Mean dia. dm147.5mm

Original catalogue drawing - NSK E1103, page 267

HR32221 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	105	4.1339
D	Outside diameter	190	7.4803
B	Inner-ring / bearing width	50	1.9685
T	Overall assembly width	53	2.0866
C	Cup / outer-ring width	43	1.6929
r	Chamfer (min)	2.5	0.0984

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)	105
Outside dia. D (mm)	190
Width B (mm)	50
Overall width T (mm)	53
Cup width C (mm)	43

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	100040
Basic static load rating Cor (lbs)	114653
Basic dynamic load rating Cr (N)	445000
Basic static load rating C0r (N)	510000
Limiting speed - grease (rpm)	1,900
Effective load centre a (mm)	3

Weight

Weight (kg)	6.25

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	2.5

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 600 rpm
4	111,250	102	2,822
6	74,167	392	10,903
8	55,625	1,024	28,444
10	44,500	2,154	59,845
15	29,667	8,323	231,207

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 445,000 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 CAT. No. E1103 (metric)
Catalogue page	p.267 (dimensions)

Load ratings in newtons, weights in kg, limiting speeds for grease and oil lubrication.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
32221-A	FAG	Tapered Roller	105	190	50	385 kN	6.07
32221-XL	FAG	Tapered Roller	105	190	50	455 kN	6.3
32221	Timken	Tapered Roller	105	190	50	398 kN	5.94

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
2221	NSK	Ball	105	190	50	120 kN	5.73
HR32221J	NSK	Tapered Roller	105	190	50	80,900 lbs	6.251

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR30221	NSK	Tapered Roller	105	190	36	345 kN	4.51
HR30221J	NSK	Tapered Roller	105	190	36	62,900 lbs	4.509
HR30321	NSK	Tapered Roller	105	225	49	560 kN	9.52
HR30321J	NSK	Tapered Roller	105	225	49	102,000 lbs	9.525
HR31321	NSK	Tapered Roller	105	225	53	510 kN	10
HR31321J	NSK	Tapered Roller	105	225	49	76,400 lbs	10.043
HR32021	NSK	Tapered Roller	105	160	35	250 kN	2.48
HR32021XJ	NSK	Tapered Roller	105	160	35	204,000 lbs	2.481

Request a quotation for HR32221

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