31312-AFAGTapered Roller

Name: FAG 31312-A Tapered Roller Bearing
Brand: FAG
SKU: 31312-A

31312-A is a FAG tapered roller bearing, bore 60 mm, O.D. 130 mm, width 31 mm, dynamic rating 147 kN. Dimensions, drawing, interchanges and price.

Request a quote WhatsApp Email us Search the catalog

Bore d60mm

Outside dia. D130mm

Width B31mm

Dynamic Cr147kN

Static C0r169kN

Limiting speed5,300rpm

Weight1.94kg

Cr / C0r0.87

Mean dia. dm95mm

Original catalogue drawing - FAG Schaeffler HR 1, page 480

31312-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	60	2.3622
D	Outside diameter	130	5.1181
B	Inner-ring / bearing width	31	1.2205
T	Overall assembly width	33.5	1.3189
C	Cup / outer-ring width	22	0.8661

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)	60
Outside dia. D (mm)	130
Width B (mm)	31
Overall width T (mm)	33.5
Cup width C (mm)	22
Inner-ring OD d1 (mm)	95.6

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	33047
Basic static load rating Cor (lbs)	37993
Basic dynamic load rating Cr (N)	147000
Basic static load rating C0r (N)	169000
Basic dynamic axial rating Ca (N)	5
Fatigue limit load Cur (N)	20100
Factor e	0.83
Factor Y	0.73
Factor Y0	0.4
Limiting speed nG (rpm)	5,300
Reference speed nB (rpm)	4,450
Effective load centre a (mm)	41

Weight

Weight (kg)	1.94

Mounting dimensions (fillets / shoulders)

Chamfer r2 min (mm)	3
Shaft shoulder da (mm)	73
Shaft shoulder db (mm)	72
Housing shoulder Da (mm)	118
Housing shoulder Db (mm)	123
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 1,700 rpm
4	36,750	102	996
6	24,500	392	3,848
8	18,375	1,024	10,039
10	14,700	2,154	21,122
15	9,800	8,323	81,603

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 147,000 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
1312	NSK	Ball	60	130	31	12,800 lbs	2.032
6312	NSK	Ball	60	130	31	18,400 lbs	1.701
7312B	NSK	Ball	60	130	31	19,100 lbs	2
BL312	NSK	Ball	60	130	31	22,700 lbs	1.846
312	NSK	Cylindrical Roller	60	130	31	27,700 lbs	2.041
NU312	NSK	Cylindrical Roller	60	130	31	152 kN	1.82
NU312E	NSK	Cylindrical Roller	60	130	31	184 kN	2.06
21312EAE4	NSK	Spherical Roller	60	130	31	238 kN	1.98
HR30312	NSK	Tapered Roller	60	130	31	214 kN	2.03
HR30312J	NSK	Tapered Roller	60	130	31	39,100 lbs	2.032

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
1312-K-TVH-C3	FAG	Ball	60	130	31	58 kN	1.94
1312-TVH	FAG	Ball	60	130	31	58 kN	1.97
6312	FAG	Ball	60	130	31	81.5 kN	1.75
6312-2RSR	FAG	Ball	60	130	31	81.5 kN	1.79
6312-2Z	FAG	Ball	60	130	31	81.5 kN	1.79
6312-C	FAG	Ball	60	130	31	89 kN	1.71
6312-C-2BRS	FAG	Ball	60	130	31	89 kN	1.75
6312-C-2HRS	FAG	Ball	60	130	31	89 kN	1.75

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
31312-A-N11CA-A80-120	FAG	Tapered Roller	60	130	None	250 kN	4.2
31312-XL	FAG	Tapered Roller	60	130	31	173 kN	1.94

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30212-A	FAG	Tapered Roller	60	110	22	102 kN	0.919
30212-XL	FAG	Tapered Roller	60	110	22	122 kN	0.95
30212-XL-DF-A100-140	FAG	Tapered Roller	60	110	None	210 kN	1.97
30312-A	FAG	Tapered Roller	60	130	31	176 kN	2.02
30312-XL	FAG	Tapered Roller	60	130	31	208 kN	2.03
32012-X	FAG	Tapered Roller	60	95	23	80 kN	0.614
32012-X-XL	FAG	Tapered Roller	60	95	23	97 kN	0.61
32212-A	FAG	Tapered Roller	60	110	28	133 kN	1.18

Request a quotation for 31312-A

Send us the quantity you need and we will come back with price and lead time, normally within 24 hours. Equivalent parts from other brands can be quoted at the same time.

Online enquiry form richard@bearingsfit.com WhatsApp +86 156 2149 6516