HR32948NSKTapered Roller

Name: NSK HR32948 Tapered Roller Bearing
Brand: NSK
SKU: HR32948

HR32948 is a NSK tapered roller bearing, bore 240 mm, O.D. 320 mm, width 51 mm, dynamic rating 615 kN. Dimensions, drawing, interchanges and price.

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Bore d240mm

Outside dia. D320mm

Width B51mm

Dynamic Cr615kN

Static C0r1040kN

Limiting speed950rpm

Weight11.1kg

Cr / C0r0.59

Mean dia. dm280mm

Original catalogue drawing - NSK E1103, page 269

HR32948 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	240	9.4488
D	Outside diameter	320	12.5984
B	Inner-ring / bearing width	51	2.0079
T	Overall assembly width	51	2.0079
C	Cup / outer-ring width	39	1.5354
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)	240
Outside dia. D (mm)	320
Width B (mm)	51
Overall width T (mm)	51
Cup width C (mm)	39

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	138258
Basic static load rating Cor (lbs)	233801
Basic dynamic load rating Cr (N)	615000
Basic static load rating C0r (N)	1040000
Limiting speed - grease (rpm)	950
Effective load centre a (mm)	3

Weight

Weight (kg)	11.1

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 300 rpm
4	153,750	102	5,644
6	102,500	392	21,805
8	76,875	1,024	56,889
10	61,500	2,154	119,691
15	41,000	8,323	462,415

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 615,000 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
32948	FAG	Tapered Roller	240	320	51	510 kN	11
32948	Timken	Tapered Roller	240	320	51	571 kN	10.35

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR32948J	NSK	Tapered Roller	240	320	51	112,000 lbs	11.104

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30248	NSK	Tapered Roller	240	440	72	223,000 lbs	45.21
30348	NSK	Tapered Roller	240	500	95	373,000 lbs	92.614
32248	NSK	Tapered Roller	240	440	120	366,000 lbs	78.05
32348	NSK	Tapered Roller	240	500	155	567,000 lbs	145.027
HR32048	NSK	Tapered Roller	240	360	76	1130 kN	26.2
HR32048XJ	NSK	Tapered Roller	240	360	76	920,000 lbs	26.204
HR32948J	NSK	Tapered Roller	240	320	51	112,000 lbs	11.104

Request a quotation for HR32948

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