387A/382ANSKTapered Roller

Name: NSK 387A/382A Tapered Roller Bearing
Brand: NSK
SKU: 387A/382A

387A/382A is a NSK tapered roller bearing, bore 57.15 mm, O.D. 96.84 mm, width 21.95 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

Request a quote WhatsApp Email us Search the catalog

Bore d57.15mm

Outside dia. D96.84mm

Width B21.95mm

Dynamic Cr16,400lbs

Static C0r20,100lbs

Weight0.576kg

Cr / C0r0.82

Mean dia. dm77mm

Original catalogue drawing - NSK catalogue, page 137

387A/382A 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	57.15	2.25
D	Outside diameter	96.838	3.8125
B	Inner-ring / bearing width	21.946	0.864
T	Overall assembly width	21	0.8268
C	Cup / outer-ring width	15.875	0.625
r	Chamfer (min)	3.556	0.14

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. 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)	57.150
Bore d (in)	2.2500
Outside dia. D (mm)	96.838
Outside dia. D (in)	3.8125
Width B (in)	0.8640
Overall width T (mm)	21.000
Overall width T (in)	0.8268
Cup width C (in)	0.6250

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	16400
Basic static load rating Cor (lbs)	20100
Effective centre a (in)	0.71

Weight

Cone weight (kg)	0.399
Cup weight (kg)	0.177
Total weight (kg)	0.576

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.14
Chamfer r1 (in)	0.03
Shaft shoulder da min (in)	3.50
Shaft shoulder da (in)	2.44
Housing shoulder Da (in)	3.62

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	18,238	102	3,386
6	12,158	392	13,083
8	9,119	1,024	34,133
10	7,295	2,154	71,814
15	4,863	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 72,951 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.139 (dimensions) / p.140 (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
K387-382-A	FAG	Tapered Roller	57.15	96.84	21.95	76 kN	0.593
K387-A-382-A	FAG	Tapered Roller	57.15	96.84	21.95	76 kN	0.59
K387-A-382-S	FAG	Tapered Roller	57.15	96.84	21.95	76 kN	0.66
387-S/382A	Timken	Tapered Roller	57.15	96.84	21.95	108 kN	0.59
387/382A	Timken	Tapered Roller	57.15	96.84	21.95	108 kN	0.59
387A/382-S	Timken	Tapered Roller	57.15	96.84	21.95	108 kN	0.66
387A/382A	Timken	Tapered Roller	57.15	96.84	21.95	108 kN	0.59
387AS/382A	Timken	Tapered Roller	57.15	96.84	21.95	108 kN	0.59

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
HR30211	NSK	Tapered Roller	55	100	21	116 kN	0.736
HR30211J	NSK	Tapered Roller	55	100	21	21,200 lbs	0.735
HR30311	NSK	Tapered Roller	55	120	29	184 kN	1.63
HR30311J	NSK	Tapered Roller	55	120	29	33,700 lbs	1.628
HR31311	NSK	Tapered Roller	55	120	29	161 kN	1.58
HR31311J	NSK	Tapered Roller	55	120	29	29,400 lbs	1.579
HR32011	NSK	Tapered Roller	55	90	23	100 kN	0.568
HR32011XJ	NSK	Tapered Roller	55	90	23	81,500 lbs	0.567

Request a quotation for 387A/382A

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516