31316-XLFAGTapered Roller

Name: FAG 31316-XL Tapered Roller Bearing
Brand: FAG
SKU: 31316-XL

31316-XL is a FAG tapered roller bearing, bore 80 mm, O.D. 170 mm, width 39 mm, dynamic rating 270 kN. Dimensions, drawing, interchanges and price.

X-life

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Bore d80mm

Outside dia. D170mm

Width B39mm

Dynamic Cr270kN

Static C0r270kN

Limiting speed4,550rpm

Weight4.16kg

Cr / C0r1

Mean dia. dm125mm

Original catalogue drawing - FAG Schaeffler HR 1, page 598

31316-XL 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	80	3.1496
D	Outside diameter	170	6.6929
B	Inner-ring / bearing width	39	1.5354
T	Overall assembly width	42.5	1.6732
C	Cup / outer-ring width	27	1.063

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)	80
Outside dia. D (mm)	170
Width B (mm)	39
Overall width T (mm)	42.5
Cup width C (mm)	27
Inner-ring OD d1 (mm)	124.4

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	60698
Basic static load rating Cor (lbs)	60698
Basic dynamic load rating Cr (N)	270000
Basic static load rating C0r (N)	270000
Basic dynamic axial rating Ca (N)	6
Fatigue limit load Cur (N)	38500
Factor e	0.83
Factor Y	0.73
Factor Y0	0.4
Limiting speed nG (rpm)	4,550
Reference speed nB (rpm)	3,150
Effective load centre a (mm)	53

Weight

Weight (kg)	4.16

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)	3
Shaft shoulder da (mm)	97
Shaft shoulder db (mm)	92
Housing shoulder Da (mm)	134
Housing shoulder Db (mm)	159
Housing fillet ra max (mm)	3
Fillet rb max (mm)	2.5

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 1,500 rpm
4	67,500	102	1,129
6	45,000	392	4,361
8	33,750	1,024	11,378
10	27,000	2,154	23,938
15	18,000	8,323	92,483

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 270,000 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.598 (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
1316	NSK	Ball	80	170	39	98 kN	4.24
6316	NSK	Ball	80	170	39	27,600 lbs	3.597
7316B	NSK	Ball	80	170	39	28,700 lbs	4.25
BL316	NSK	Ball	80	170	39	36,200 lbs	4.032
316	NSK	Cylindrical Roller	80	170	39	42,700 lbs	3.856
NU316E	NSK	Cylindrical Roller	80	170	39	315 kN	4.45
21316EAE4	NSK	Spherical Roller	80	170	39	355 kN	4.32
HR30316	NSK	Tapered Roller	80	170	39	290 kN	4.07
HR30316J	NSK	Tapered Roller	80	170	39	62,000 lbs	4.273
HR31316	NSK	Tapered Roller	80	170	39	290 kN	4.07

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1316-K-M-C3	FAG	Ball	80	170	39	89 kN	4.5
1316-M	FAG	Ball	80	170	39	89 kN	4.56
6316	FAG	Ball	80	170	39	131 kN	3.75
6316-2RSR	FAG	Ball	80	170	39	131 kN	3.75
6316-2Z	FAG	Ball	80	170	39	131 kN	3.82
QJ316-N2-MPA	FAG	Ball	80	170	39	224 kN	4.65
N316-E-TVP2	FAG	Cylindrical Roller	80	170	39	300 kN	4.12
N316-E-XL-TVP2	FAG	Cylindrical Roller	80	170	39	300 kN	4.12

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
31316	FAG	Tapered Roller	80	170	39	228 kN	4.19
31316-N11CA-A100-140	FAG	Tapered Roller	80	170	None	390 kN	8.9

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30216-A	FAG	Tapered Roller	80	140	26	154 kN	1.68
30216-XL	FAG	Tapered Roller	80	140	26	184 kN	1.68
30316-A	FAG	Tapered Roller	80	170	39	290 kN	4.34
32016-X	FAG	Tapered Roller	80	125	29	136 kN	1.29
32016-X-XL	FAG	Tapered Roller	80	125	29	162 kN	1.29
32016-X-XL-DF-A140-170	FAG	Tapered Roller	80	125	None	280 kN	2.66
32016-X-XL-DF-A150-200	FAG	Tapered Roller	80	125	None	280 kN	2.66
32016-X-XL-DF-A25-50	FAG	Tapered Roller	80	125	None	280 kN	2.66

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