6913NSKBall

Name: NSK 6913 Ball Bearing
Brand: NSK
SKU: 6913

6913 is a NSK ball bearing, bore 65 mm, O.D. 90 mm, width 13 mm, dynamic rating 3,890 lbs. Dimensions, drawing, interchanges and price.

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Bore d65mm

Outside dia. D90mm

Width B13mm

Dynamic Cr3,890lbs

Static C0r3,610lbs

Limiting speed7,100rpm

Weight0.213kg

Cr / C0r1.08

Mean dia. dm77.5mm

Original catalogue drawing - NSK catalogue, page 23

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	90	3.5433
B	Inner-ring / bearing width	13	0.5118
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)	65
Bore d (in)	2.5591
Outside dia. D (mm)	90
Outside dia. D (in)	3.5433
Width B (mm)	13
Width B (in)	0.5118

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	3890
Basic static load rating Cor (lbs)	3610
Limiting speed - grease (rpm)	7,100
Limiting speed - oil (rpm)	8,500
Factor f0	16.6

Weight

Weight (kg)	0.213

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	2.756
Shaft shoulder da max (in)	2.815
Housing shoulder Da max (in)	3.346

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,300 rpm
4	4,326	64	464
6	2,884	216	1,565
8	2,163	512	3,710
10	1,730	1,000	7,246
15	1,154	3,375	24,457

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 17,304 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.25 (dimensions) / p.26 (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
61913	FAG	Ball	65	90	13	18.5 kN	0.212
61913-2RSR	FAG	Ball	65	90	13	18.5 kN	0.212
61913-2RZ	FAG	Ball	65	90	13	18.5 kN	0.212
B71913-C-T-P4S	FAG	Precision / Angular Contact	65	90	13	24.5 kN	0.202
B71913-E-T-P4S	FAG	Precision / Angular Contact	65	90	13	22.8 kN	0.202
HCB71913-C-T-P4S	FAG	Precision / Angular Contact	65	90	13	17 kN	0.2
HCB71913-E-T-P4S	FAG	Precision / Angular Contact	65	90	13	16 kN	0.2
HCS71913-C-T-P4S	FAG	Precision / Angular Contact	65	90	13	9.8 kN	0.194
HCS71913-E-T-P4S	FAG	Precision / Angular Contact	65	90	13	9.3 kN	0.194
HSS71913-C-T-P4S	FAG	Precision / Angular Contact	65	90	13	14.3 kN	0.226

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
7913A5	NSK	Precision / Angular Contact	65	90	13	4,280 lbs	0.204
7913C	NSK	Precision / Angular Contact	65	90	13	4,540 lbs	0.204

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 6913

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