320/38-XFAGTapered Roller

Name: FAG 320/38-X Tapered Roller Bearing
Brand: FAG
SKU: 320/38-X

320/38-X is a FAG tapered roller bearing, bore 38 mm, O.D. 65 mm, width 18 mm, dynamic rating 49 kN. Dimensions, drawing, interchanges and price.

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Bore d38mm

Outside dia. D65mm

Width B18mm

Dynamic Cr49kN

Static C0r64kN

Limiting speed11,100rpm

Weight0.252kg

Cr / C0r0.77

Mean dia. dm51.5mm

Original catalogue drawing - FAG Schaeffler HR 1, page 590

320/38-X 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	38	1.4961
D	Outside diameter	65	2.5591
B	Inner-ring / bearing width	18	0.7087
T	Overall assembly width	18	0.7087
C	Cup / outer-ring width	14	0.5512

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)	38
Outside dia. D (mm)	65
Width B (mm)	18
Overall width T (mm)	18
Cup width C (mm)	14
Inner-ring OD d1 (mm)	52

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	11016
Basic static load rating Cor (lbs)	14388
Basic dynamic load rating Cr (N)	49000
Basic static load rating C0r (N)	64000
Basic dynamic axial rating Ca (N)	4
Fatigue limit load Cur (N)	7500
Factor e	0.37
Factor Y	1.6
Factor Y0	0.88
Limiting speed nG (rpm)	11,100
Reference speed nB (rpm)	6,400
Effective load centre a (mm)	14

Weight

Weight (kg)	0.252

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)	1
Shaft shoulder da (mm)	43
Shaft shoulder db (mm)	44
Housing shoulder Da (mm)	58
Housing shoulder Db (mm)	62
Housing fillet ra max (mm)	1
Fillet rb max (mm)	1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 3,000 rpm
4	12,250	102	564
6	8,167	392	2,181
8	6,125	1,024	5,689
10	4,900	2,154	11,969
15	3,267	8,323	46,241

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 49,000 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.590 (dimensions)

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

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
320/22-X	FAG	Tapered Roller	22	44	15	24.8 kN	0.11
320/28-X	FAG	Tapered Roller	28	52	16	33.5 kN	0.156
320/32-X	FAG	Tapered Roller	32	58	17	38.5 kN	0.188
320/42-X	FAG	Tapered Roller	42	72	20	59 kN	0.345

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
KJL69349-JL69310	FAG	Tapered Roller	38	63	17	39.5 kN	0.204
K3490-3420	FAG	Tapered Roller	38.1	79.38	29.77	90 kN	0.677
K4375-4335	FAG	Tapered Roller	38.1	90.49	40.39	142 kN	1.33
KHM801346-HM801310	FAG	Tapered Roller	38.1	82.55	28.57	89 kN	0.874
KLM29748-LM29710	FAG	Tapered Roller	38.1	65.09	18.29	44 kN	0.227
KLM29749-LM29710	FAG	Tapered Roller	38.1	65.09	18.29	44 kN	0.24
KLM29749-LM29711	FAG	Tapered Roller	38.1	65.09	18.29	45 kN	0.275
KHM89249-HM89210	FAG	Tapered Roller	36.51	79.38	28.83	92 kN	0.679

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