HR32956NSKTapered Roller

Name: NSK HR32956 Tapered Roller Bearing
Brand: NSK
SKU: HR32956

HR32956 is a NSK tapered roller bearing, bore 280 mm, O.D. 380 mm, width 63.5 mm, dynamic rating 945 kN. Dimensions, drawing, interchanges and price.

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Bore d280mm

Outside dia. D380mm

Width B63.5mm

Dynamic Cr945kN

Static C0r1580kN

Limiting speed800rpm

Weight20kg

Cr / C0r0.6

Mean dia. dm330mm

Original catalogue drawing - NSK E1103, page 270

HR32956 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	280	11.0236
D	Outside diameter	380	14.9606
B	Inner-ring / bearing width	63.5	2.5
T	Overall assembly width	63.5	2.5
C	Cup / outer-ring width	48	1.8898
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)	280
Outside dia. D (mm)	380
Width B (mm)	63.5
Overall width T (mm)	63.5
Cup width C (mm)	48

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	212444
Basic static load rating Cor (lbs)	355198
Basic dynamic load rating Cr (N)	945000
Basic static load rating C0r (N)	1580000
Limiting speed - grease (rpm)	800
Effective load centre a (mm)	3

Weight

Weight (kg)	20.0

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 200 rpm
4	236,250	102	8,466
6	157,500	392	32,708
8	118,125	1,024	85,333
10	94,500	2,154	179,536
15	63,000	8,323	693,622

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 945,000 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.270 (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
32956	FAG	Tapered Roller	280	380	63.5	740 kN	19.9
32956-XL	FAG	Tapered Roller	280	380	63.5	880 kN	19.8
32956	Timken	Tapered Roller	280	380	63.5	850 kN	19.81

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR32956J	NSK	Tapered Roller	280	380	63.5	172,000 lbs	20.003

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30256	NSK	Tapered Roller	280	500	80	279,000 lbs	66.311
32256	NSK	Tapered Roller	280	500	130	438,000 lbs	109.234
32356	NSK	Tapered Roller	280	580	175	4050 kN	224
HR32056	NSK	Tapered Roller	280	420	87	1450 kN	40.6
HR32056XJ	NSK	Tapered Roller	280	420	87	1,180,000 lbs	40.606
HR32956J	NSK	Tapered Roller	280	380	63.5	172,000 lbs	20.003

Request a quotation for HR32956

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