HR32321JNSKTapered Roller

Name: NSK HR32321J Tapered Roller Bearing
Brand: NSK
SKU: HR32321J

HR32321J is a NSK tapered roller bearing, bore 105 mm, O.D. 225 mm, width 77 mm. Dimensions, drawing, interchanges and price.

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Bore d105mm

Outside dia. D225mm

Width B77mm

Dynamic Cr151,000lbs

Static C0r205,000lbs

Limiting speed1,700rpm

Weight14.515kg

Cr / C0r0.74

Mean dia. dm165mm

Original catalogue drawing - NSK catalogue, page 115

HR32321J 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	225	8.8583
B	Inner-ring / bearing width	77	3.0315
T	Overall assembly width	81.5	3.2087
C	Cup / outer-ring width	63	2.4803

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
Bore d (in)	4.1339
Outside dia. D (mm)	225
Outside dia. D (in)	8.8583
Width B (mm)	77
Width B (in)	3.0315
Overall width T (mm)	81.5
Overall width T (in)	3.2087
Cup width C (mm)	63
Cup width C (in)	2.4803

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	151000
Basic static load rating Cor (lbs)	205000
Limiting speed - grease (rpm)	1,700
Limiting speed - oil (rpm)	2,200

Weight

Weight (kg)	14.515

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.12
Shaft shoulder da min (in)	5.118
Housing shoulder Da max (in)	8.465
Shaft shoulder db max (in)	5.039

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	167,920	102	3,386
6	111,947	392	13,083
8	83,960	1,024	34,133
10	67,168	2,154	71,814
15	44,779	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 671,681 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.117 (dimensions) / p.118 (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
32321-A	FAG	Tapered Roller	105	225	77	670 kN	15.1
32321	Timken	Tapered Roller	105	225	77	726 kN	13.99

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 HR32321J

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