61901-2ZFAGBall

Name: FAG 61901-2Z Ball Bearing
Brand: FAG
SKU: 61901-2Z

61901-2Z is a FAG ball bearing, bore 12 mm, O.D. 24 mm, width 6 mm, dynamic rating 3 kN. Dimensions, drawing, interchanges and price.

Shielded both sides

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Bore d12mm

Outside dia. D24mm

Width B6mm

Dynamic Cr3.05kN

Static C0r1.46kN

Limiting speed38,000rpm

Weight0.012kg

Cr / C0r2.09

Mean dia. dm18mm

Original catalogue drawing - FAG Schaeffler HR 1, page 236

61901-2Z FAG Ball 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	12	0.4724
D	Outside diameter	24	0.9449
B	Inner-ring / bearing width	6	0.2362
r	Chamfer (min)	0.3	0.0118

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
Outside dia. D (mm)	24
Width B (mm)	6
Seal outside dia. D2 (mm)	21.4

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	686
Basic static load rating Cor (lbs)	328
Basic dynamic load rating Cr (N)	3050
Basic static load rating C0r (N)	1460
Fatigue limit load Cur (N)	75
Factor f0	14.5
Limiting speed nG (rpm)	38,000
Reference speed nB (rpm)	23,300

Weight

Weight (kg)	0.012

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	0.3
Shaft shoulder da (mm)	14
Housing shoulder Da (mm)	22
Housing fillet ra max (mm)	0.3

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 3,000 rpm
4	762	64	356
6	508	216	1,200
8	381	512	2,844
10	305	1,000	5,556
15	203	3,375	18,750

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 3,050 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	FAG
Source catalogue	FAG / Schaeffler Rolling Bearings HR 1
Catalogue page	p.236 (dimensions)

Load ratings in newtons, fatigue limit load Cur, limiting speed nG and reference speed nB.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
6901	NSK	Ball	12	24	6	649 lbs	0.009
7901A5	NSK	Precision / Angular Contact	12	24	6	720 lbs	0.009
7901C	NSK	Precision / Angular Contact	12	24	6	750 lbs	0.009

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
61901	FAG	Ball	12	24	6	3 kN	0.012
61901-2RSR	FAG	Ball	12	24	6	3 kN	0.012
B71901-C-T-P4S	FAG	Precision / Angular Contact	12	24	6	3.4 kN	0.01
B71901-E-T-P4S	FAG	Precision / Angular Contact	12	24	6	3.2 kN	0.01
HCB71901-C-T-P4S	FAG	Precision / Angular Contact	12	24	6	2.3 kN	0.02
HCB71901-E-T-P4S	FAG	Precision / Angular Contact	12	24	6	2.2 kN	0.02
HCS71901-C-T-P4S	FAG	Precision / Angular Contact	12	24	6	1.4 kN	0.01
HCS71901-E-T-P4S	FAG	Precision / Angular Contact	12	24	6	1.3 kN	0.01

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
61901	FAG	Ball	12	24	6	3 kN	0.012
61901-2RSR	FAG	Ball	12	24	6	3 kN	0.012

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1201-TVH	FAG	Ball	12	32	10	5.7 kN	0.041
1301-TVH	FAG	Ball	12	37	12	9.8 kN	0.067
2201-2RS-TVH	FAG	Ball	12	32	14	5.7 kN	0.058
2201-TVH	FAG	Ball	12	32	14	9.4 kN	0.05
4201-B-TVH	FAG	Ball	12	32	14	11.1 kN	0.051
6001	FAG	Ball	12	28	8	5.1 kN	0.02
6001-2RSR	FAG	Ball	12	28	8	5.1 kN	0.022
6001-2Z	FAG	Ball	12	28	8	5.1 kN	0.02

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