6313NSKBall

Name: NSK 6313 Ball Bearing
Brand: NSK
SKU: 6313

6313 is a NSK ball bearing, bore 65 mm, O.D. 140 mm, width 33 mm, dynamic rating 20,800 lbs. Dimensions, drawing, interchanges and price.

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Bore d65mm

Outside dia. D140mm

Width B33mm

Dynamic Cr20,800lbs

Static C0r13,450lbs

Limiting speed4,800rpm

Weight2.1kg

Cr / C0r1.55

Mean dia. dm102.5mm

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	65	2.5591
D	Outside diameter	140	5.5118
B	Inner-ring / bearing width	33	1.2992
r	Chamfer (min)	2.007	0.079

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)	65
Bore d (in)	2.5591
Outside dia. D (mm)	140
Outside dia. D (in)	5.5118
Width B (mm)	33
Width B (in)	1.2992

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	20800
Basic static load rating Cor (lbs)	13450
Limiting speed - grease (rpm)	4,800
Limiting speed - oil (rpm)	6,000
Factor f0	13.2

Weight

Weight (kg)	2.1

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.079
Shaft shoulder da min (in)	3.031
Shaft shoulder da max (in)	3.369
Housing shoulder Da max (in)	5.039

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,600 rpm
4	23,131	64	667
6	15,421	216	2,250
8	11,565	512	5,333
10	9,252	1,000	10,417
15	6,168	3,375	35,156

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 92,523 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
1313-K-TVH-C3	FAG	Ball	65	140	33	63 kN	2.41
1313-TVH	FAG	Ball	65	140	33	63 kN	2.44
6313	FAG	Ball	65	140	33	93 kN	2.14
6313-2RSR	FAG	Ball	65	140	33	93 kN	2.18
6313-2Z	FAG	Ball	65	140	33	93 kN	2.18
6313-C	FAG	Ball	65	140	33	101 kN	2.07
6313-C-2BRS	FAG	Ball	65	140	33	101 kN	2.13
6313-C-2HRS	FAG	Ball	65	140	33	101 kN	2.13
6313-C-2Z	FAG	Ball	65	140	33	101 kN	2.12
QJ313-MPA	FAG	Ball	65	140	33	163 kN	2.71

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1313	NSK	Ball	65	140	33	13,900 lbs	2.522
7313B	NSK	Ball	65	140	33	21,600 lbs	2.468
BL313	NSK	Ball	65	140	33	27,300 lbs	2.313
313	NSK	Cylindrical Roller	65	140	33	30,400 lbs	2.223
NU313	NSK	Cylindrical Roller	65	140	33	166 kN	2.23
NU313E	NSK	Cylindrical Roller	65	140	33	222 kN	2.56
21313EAE4	NSK	Spherical Roller	65	140	33	264 kN	2.45
3400	NSK	Tapered Roller	65	140	33	213 kN	2.43

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1213	NSK	Ball	65	120	23	6,970 lbs	1.152
1313	NSK	Ball	65	140	33	13,900 lbs	2.522
16013	NSK	Ball	65	100	11	22.5 kN	0.3
2213	NSK	Ball	65	120	31	9,890 lbs	1.52
2313	NSK	Ball	65	140	48	21,400 lbs	3.429
3213J	NSK	Ball	65	120	38.1	16,500 lbs	1.746
3313J	NSK	Ball	65	140	58.7	29,000 lbs	4.091
5213J	NSK	Ball	65	120	38.1	17,100 lbs	1.651

Request a quotation for 6313

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