30211-AFAGTapered Roller

Name: FAG 30211-A Tapered Roller Bearing
Brand: FAG
SKU: 30211-A

30211-A is a FAG tapered roller bearing, bore 55 mm, O.D. 100 mm, width 21 mm, dynamic rating 91 kN. Dimensions, drawing, interchanges and price.

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Bore d55mm

Outside dia. D100mm

Width B21mm

Dynamic Cr91kN

Static C0r107kN

Limiting speed6,700rpm

Weight0.92kg

Cr / C0r0.85

Mean dia. dm77.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 480

30211-A FAG Tapered Roller 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	55	2.1654
D	Outside diameter	100	3.937
B	Inner-ring / bearing width	21	0.8268
T	Overall assembly width	22.75	0.8957
C	Cup / outer-ring width	18	0.7087

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)	55
Outside dia. D (mm)	100
Width B (mm)	21
Overall width T (mm)	22.75
Cup width C (mm)	18
Inner-ring OD d1 (mm)	76.5

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	20458
Basic static load rating Cor (lbs)	24055
Basic dynamic load rating Cr (N)	91000
Basic static load rating C0r (N)	107000
Basic dynamic axial rating Ca (N)	4
Fatigue limit load Cur (N)	12400
Factor e	0.4
Factor Y	1.48
Factor Y0	0.81
Limiting speed nG (rpm)	6,700
Reference speed nB (rpm)	4,600
Effective load centre a (mm)	21

Weight

Weight (kg)	0.92

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)	2
Shaft shoulder da (mm)	64
Shaft shoulder db (mm)	64
Housing shoulder Da (mm)	91
Housing shoulder Db (mm)	94
Housing fillet ra max (mm)	2
Fillet rb max (mm)	1.5

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 2,200 rpm
4	22,750	102	770
6	15,167	392	2,973
8	11,375	1,024	7,758
10	9,100	2,154	16,321
15	6,067	8,323	63,057

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 91,000 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.480 (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
1211	NSK	Ball	55	100	21	6,070 lbs	0.694
6211	NSK	Ball	55	100	21	9,760 lbs	0.617
7211B	NSK	Ball	55	100	21	9,920 lbs	0.635
BL211	NSK	Ball	55	100	21	12,800 lbs	0.662
211	NSK	Cylindrical Roller	55	100	21	13,000 lbs	0.653
NU211E	NSK	Cylindrical Roller	55	100	21	106 kN	0.669
HR30211	NSK	Tapered Roller	55	100	21	116 kN	0.736
HR30211J	NSK	Tapered Roller	55	100	21	21,200 lbs	0.735
7100	NSK	Precision / Angular Contact	55	100	21	78 kN	0.77
7211	NSK	Precision / Angular Contact	55	100	21	56 kN	0.613

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
11211-TVH	FAG	Ball	55	100	21	27 kN	1.13
1211-K-TVH-C3	FAG	Ball	55	100	21	27 kN	0.682
1211-TVH	FAG	Ball	55	100	21	27 kN	0.693
6211	FAG	Ball	55	100	21	46 kN	0.618
6211-2RSR	FAG	Ball	55	100	21	46 kN	0.632
6211-2Z	FAG	Ball	55	100	21	46 kN	0.632
QJ211-TVP	FAG	Ball	55	100	21	80 kN	0.697
QJ211-XL-TVP	FAG	Ball	55	100	21	81 kN	0.697

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30211-XL	FAG	Tapered Roller	55	100	21	109 kN	0.728

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30311-A	FAG	Tapered Roller	55	120	29	151 kN	1.8
30311-XL	FAG	Tapered Roller	55	120	29	180 kN	1.63
31311-A	FAG	Tapered Roller	55	120	29	122 kN	1.57
31311-A-N11CA-A80-120	FAG	Tapered Roller	55	120	None	209 kN	3.4
31311-XL	FAG	Tapered Roller	55	120	29	145 kN	1.75
32011-X	FAG	Tapered Roller	55	90	23	79 kN	0.64
32011-X-XL	FAG	Tapered Roller	55	90	23	96 kN	0.57
32211-A	FAG	Tapered Roller	55	100	25	110 kN	0.87

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