HR32938NSKTapered Roller

Name: NSK HR32938 Tapered Roller Bearing
Brand: NSK
SKU: HR32938

HR32938 is a NSK tapered roller bearing, bore 190 mm, O.D. 260 mm, width 45 mm, dynamic rating 445 kN. Dimensions, drawing, interchanges and price.

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Bore d190mm

Outside dia. D260mm

Width B45mm

Dynamic Cr445kN

Static C0r715kN

Limiting speed1,200rpm

Weight6.83kg

Cr / C0r0.62

Mean dia. dm225mm

Original catalogue drawing - NSK E1103, page 269

HR32938 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	190	7.4803
D	Outside diameter	260	10.2362
B	Inner-ring / bearing width	45	1.7717
T	Overall assembly width	45	1.7717
C	Cup / outer-ring width	34	1.3386
r	Chamfer (min)	2	0.0787

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)	190
Outside dia. D (mm)	260
Width B (mm)	45
Overall width T (mm)	45
Cup width C (mm)	34

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	100040
Basic static load rating Cor (lbs)	160738
Basic dynamic load rating Cr (N)	445000
Basic static load rating C0r (N)	715000
Limiting speed - grease (rpm)	1,200
Effective load centre a (mm)	2.5

Weight

Weight (kg)	6.83

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	2

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 400 rpm
4	111,250	102	4,233
6	74,167	392	16,354
8	55,625	1,024	42,667
10	44,500	2,154	89,768
15	29,667	8,323	346,811

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.269 (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
32938	FAG	Tapered Roller	190	260	45	370 kN	7.55
32938	Timken	Tapered Roller	190	260	45	398 kN	6.91

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR32938J	NSK	Tapered Roller	190	260	45	82,100 lbs	6.831

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30238	NSK	Tapered Roller	190	340	55	130,000 lbs	20.103
30338	NSK	Tapered Roller	190	400	78	227,000 lbs	46.008
32338	NSK	Tapered Roller	190	400	132	2040 kN	78.9
HR30238	NSK	Tapered Roller	190	340	55	880 kN	21.4
HR32038	NSK	Tapered Roller	190	290	64	800 kN	14.9
HR32038XJ	NSK	Tapered Roller	190	290	64	650,000 lbs	14.901
HR32238	NSK	Tapered Roller	190	340	92	1370 kN	35.2
HR32238J	NSK	Tapered Roller	190	340	92	250,000 lbs	35.181

Request a quotation for HR32938

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