61918FAGBall

Name: FAG 61918 Ball Bearing
Brand: FAG
SKU: 61918

61918 is a FAG ball bearing, bore 90 mm, O.D. 125 mm, width 18 mm, dynamic rating 33.5 kN. Dimensions, drawing, interchanges and price.

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Bore d90mm

Outside dia. D125mm

Width B18mm

Dynamic Cr33.5kN

Static C0r30.5kN

Limiting speed7,400rpm

Weight0.59kg

Cr / C0r1.1

Mean dia. dm107.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 266

61918 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	90	3.5433
D	Outside diameter	125	4.9213
B	Inner-ring / bearing width	18	0.7087
r	Chamfer (min)	1.1	0.0433

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)	90
Outside dia. D (mm)	125
Width B (mm)	18
Inner-ring OD d1 (mm)	101.6
Inner-ring shoulder dia. D1 (mm)	113.8

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	7531
Basic static load rating Cor (lbs)	6857
Basic dynamic load rating Cr (N)	33500
Basic static load rating C0r (N)	30500
Fatigue limit load Cur (N)	1490
Factor f0	15.1
Limiting speed nG (rpm)	7,400
Reference speed nB (rpm)	5,200

Weight

Weight (kg)	0.59

Mounting dimensions (fillets / shoulders)

Housing fillet r max (mm)	1.1
Shaft shoulder da (mm)	96
Housing shoulder Da (mm)	119
Housing fillet ra max (mm)	1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,400 rpm
4	8,375	64	444
6	5,583	216	1,500
8	4,188	512	3,556
10	3,350	1,000	6,944
15	2,233	3,375	23,438

Basic rating life per ISO 281: L₁₀ = (C/P)³ with C = 33,500 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.266 (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
6918	NSK	Ball	90	125	18	7,370 lbs	0.567
7918A5	NSK	Precision / Angular Contact	90	125	18	8,820 lbs	0.558
7918C	NSK	Precision / Angular Contact	90	125	18	9,370 lbs	0.553

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
B71918-C-T-P4S	FAG	Precision / Angular Contact	90	125	18	45.5 kN	0.558
B71918-E-T-P4S	FAG	Precision / Angular Contact	90	125	18	43 kN	0.556
HCB71918-C-T-P4S	FAG	Precision / Angular Contact	90	125	18	31.5 kN	0.55
HCB71918-E-T-P4S	FAG	Precision / Angular Contact	90	125	18	30 kN	0.55
HCS71918-C-T-P4S	FAG	Precision / Angular Contact	90	125	18	16.3 kN	0.588
HCS71918-E-T-P4S	FAG	Precision / Angular Contact	90	125	18	15.6 kN	0.587
HSS71918-C-T-P4S	FAG	Precision / Angular Contact	90	125	18	23.6 kN	0.589
HSS71918-E-T-P4S	FAG	Precision / Angular Contact	90	125	18	22.4 kN	0.588

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1218-K-TVH-C3	FAG	Ball	90	160	30	57 kN	2.48
1218-TVH	FAG	Ball	90	160	30	57 kN	2.52
1318-K-M-C3	FAG	Ball	90	190	43	109 kN	6.27
1318-M	FAG	Ball	90	190	43	109 kN	6.35
16018	FAG	Ball	90	140	16	44 kN	0.866
2218-K-TVH-C3	FAG	Ball	90	160	40	71 kN	3.18
2218-TVH	FAG	Ball	90	160	40	71 kN	3.18
2318-K-M-C3	FAG	Ball	90	190	64	156 kN	8.6

Request a quotation for 61918

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