6912NSKBall

Name: NSK 6912 Ball Bearing
Brand: NSK
SKU: 6912

6912 is a NSK ball bearing, bore 60 mm, O.D. 85 mm, width 13 mm, dynamic rating 4,360 lbs. Dimensions, drawing, interchanges and price.

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Bore d60mm

Outside dia. D85mm

Width B13mm

Dynamic Cr4,360lbs

Static C0r3,650lbs

Limiting speed7,500rpm

Weight0.186kg

Cr / C0r1.19

Mean dia. dm72.5mm

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	60	2.3622
D	Outside diameter	85	3.3465
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)	60
Bore d (in)	2.3622
Outside dia. D (mm)	85
Outside dia. D (in)	3.3465
Width B (mm)	13
Width B (in)	0.5118

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	4360
Basic static load rating Cor (lbs)	3650
Limiting speed - grease (rpm)	7,500
Limiting speed - oil (rpm)	9,000
Factor f0	16.2

Weight

Weight (kg)	0.186

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.039
Shaft shoulder da min (in)	2.559
Shaft shoulder da max (in)	2.598
Housing shoulder Da max (in)	3.150

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,500 rpm
4	4,849	64	427
6	3,232	216	1,440
8	2,424	512	3,413
10	1,939	1,000	6,667
15	1,293	3,375	22,500

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 19,394 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
61912	FAG	Ball	60	85	13	17.4 kN	0.206
61912-2RSR	FAG	Ball	60	85	13	17.4 kN	0.19
B71912-C-T-P4S	FAG	Precision / Angular Contact	60	85	13	24 kN	0.196
B71912-E-T-P4S	FAG	Precision / Angular Contact	60	85	13	22.8 kN	0.195
HCB71912-C-T-P4S	FAG	Precision / Angular Contact	60	85	13	16.6 kN	0.19
HCB71912-E-T-P4S	FAG	Precision / Angular Contact	60	85	13	15.6 kN	0.19
HCS71912-C-T-P4S	FAG	Precision / Angular Contact	60	85	13	9.7 kN	0.19
HCS71912-E-T-P4S	FAG	Precision / Angular Contact	60	85	13	9 kN	0.19
HSS71912-C-T-P4S	FAG	Precision / Angular Contact	60	85	13	14 kN	0.22
HSS71912-E-T-P4S	FAG	Precision / Angular Contact	60	85	13	13.2 kN	0.22

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
7912A5	NSK	Precision / Angular Contact	60	85	13	4,120 lbs	0.172
7912C	NSK	Precision / Angular Contact	60	85	13	4,370 lbs	0.191

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1212	NSK	Ball	60	110	22	6,740 lbs	0.898
1312	NSK	Ball	60	130	31	12,800 lbs	2.032
16012	NSK	Ball	60	95	11	22 kN	0.281
2212	NSK	Ball	60	110	28	7,640 lbs	1.152
2312	NSK	Ball	60	130	46	19,400 lbs	2.83
3212J	NSK	Ball	60	110	36.5	15,600 lbs	1.397
3312J	NSK	Ball	60	130	54	25,600 lbs	3.243
5212J	NSK	Ball	60	110	36.5	15,600 lbs	1.352

Request a quotation for 6912

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