6301NSKBall

Name: NSK 6301 Ball Bearing
Brand: NSK
SKU: 6301

6301 is a NSK ball bearing, bore 12 mm, O.D. 37 mm, width 12 mm, dynamic rating 2,180 lbs. Dimensions, drawing, interchanges and price.

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Bore d12mm

Outside dia. D37mm

Width B12mm

Dynamic Cr2,180lbs

Static C0r941lbs

Limiting speed20,000rpm

Weight0.059kg

Cr / C0r2.32

Mean dia. dm24.5mm

Original catalogue drawing - NSK catalogue, page 19

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	12	0.4724
D	Outside diameter	37	1.4567
B	Inner-ring / bearing width	12	0.4724
r	Chamfer (min)	0.991	0.039

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)	12
Bore d (in)	0.4724
Outside dia. D (mm)	37
Outside dia. D (in)	1.4567
Width B (mm)	12
Width B (in)	0.4724

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	2180
Basic static load rating Cor (lbs)	941
Limiting speed - grease (rpm)	20,000
Limiting speed - oil (rpm)	24,000
Factor f0	11.1

Weight

Weight (kg)	0.059

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	0.656
Shaft shoulder da max (in)	0.709
Housing shoulder Da max (in)	1.220

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 3,000 rpm
4	2,424	64	356
6	1,616	216	1,200
8	1,212	512	2,844
10	970	1,000	5,556
15	646	3,375	18,750

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 9,697 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.21 (dimensions) / p.22 (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
1301-TVH	FAG	Ball	12	37	12	9.8 kN	0.067
6301	FAG	Ball	12	37	12	9.7 kN	0.062
6301-2RSR	FAG	Ball	12	37	12	9.7 kN	0.064
6301-2Z	FAG	Ball	12	37	12	9.7 kN	0.064
6301-C	FAG	Ball	12	37	12	10.9 kN	0.062
6301-C-2BRS	FAG	Ball	12	37	12	10.9 kN	0.064
6301-C-2HRS	FAG	Ball	12	37	12	10.9 kN	0.064
6301-C-2Z	FAG	Ball	12	37	12	10.9 kN	0.061
S6301	FAG	Ball	12	37	12	9.7 kN	0.063
S6301-2RSR	FAG	Ball	12	37	12	9.7 kN	0.065

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1301	NSK	Ball	12	37	12	2,140 lbs	0.068
7301B	NSK	Ball	12	37	12	1,980 lbs	0.064
7301	NSK	Precision / Angular Contact	12	37	12	10.4 kN	0.06

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1201	NSK	Ball	12	32	10	1,260 lbs	0.041
1301	NSK	Ball	12	37	12	2,140 lbs	0.068
16001	NSK	Ball	12	28	7	5.6 kN	0.019
2201	NSK	Ball	12	32	14	1,690 lbs	0.054
2301	NSK	Ball	12	37	17	13.3 kN	0.089
3201J	NSK	Ball	12	32	15.9	2,180 lbs	0.064
5201J	NSK	Ball	12	32	15.9	2,360 lbs	0.054
5201TNG	NSK	Ball	12	32	15.9	2,380 lbs	0.05

Request a quotation for 6301

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