14125A/14276NSKTapered Roller

Name: NSK 14125A/14276 Tapered Roller Bearing
Brand: NSK
SKU: 14125A/14276

14125A/14276 is a NSK tapered roller bearing, bore 31.75 mm, O.D. 69.01 mm, width 19.58 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

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Bore d31.75mm

Outside dia. D69.01mm

Width B19.58mm

Dynamic Cr10,600lbs

Static C0r12,600lbs

Weight0.349kg

Cr / C0r0.84

Mean dia. dm50.4mm

Original catalogue drawing - NSK catalogue, page 135

14125A/14276 NSK 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	31.75	1.25
D	Outside diameter	69.012	2.717
B	Inner-ring / bearing width	19.583	0.771
T	Overall assembly width	19.845	0.7813
C	Cup / outer-ring width	15.875	0.625
r	Chamfer (min)	3.556	0.14

Notes

Tapered roller bearings are cone / cup assemblies; cone and cup weights are listed separately and the total is their sum. 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)	31.750
Bore d (in)	1.2500
Outside dia. D (mm)	69.012
Outside dia. D (in)	2.7170
Width B (in)	0.7710
Overall width T (mm)	19.845
Overall width T (in)	0.7813
Cup width C (in)	0.6250

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	10600
Basic static load rating Cor (lbs)	12600
Effective centre a (in)	0.61

Weight

Cone weight (kg)	0.218
Cup weight (kg)	0.132
Total weight (kg)	0.349

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.14
Chamfer r1 (in)	0.05
Shaft shoulder da min (in)	2.36
Shaft shoulder da (in)	1.48
Housing shoulder Da (in)	2.48

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	11,788	102	3,386
6	7,859	392	13,083
8	5,894	1,024	34,133
10	4,715	2,154	71,814
15	3,143	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 47,151 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	NSK
Source catalogue	NSK inch product catalogue
Catalogue page	p.137 (dimensions) / p.138 (ratings)

Dimensions in inches and millimetres, load ratings in lbs.

Interchange - same dimensions, other brands

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
14124/14274	Timken	Tapered Roller	31.75	69.01	19.58	54.6 kN	0.34
14124/14276	Timken	Tapered Roller	31.75	69.01	19.58	54.6 kN	0.34
14124/14277	Timken	Tapered Roller	31.75	69.01	19.58	54.6 kN	0.37
14125A/14274	Timken	Tapered Roller	31.75	69.01	19.58	54.6 kN	0.34
14125A/14276	Timken	Tapered Roller	31.75	69.01	19.58	54.6 kN	0.34

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
14123A/14274	NSK	Tapered Roller	31.75	69.01	26.72	10,600 lbs	0.39
15123/15245	NSK	Tapered Roller	31.75	62	19.05	10,400 lbs	0.236
15125/15245	NSK	Tapered Roller	31.75	62	20.64	10,400 lbs	0.245
15126/15245	NSK	Tapered Roller	31.75	62	20.64	10,400 lbs	0.249
15126/15250	NSK	Tapered Roller	31.75	63.5	20.64	10,400 lbs	0.281
LM67048/LM67010	NSK	Tapered Roller	31.75	59.13	16.76	7,800 lbs	0.181
HR302/32C	NSK	Tapered Roller	32	65	17	10,200 lbs	0.268
HR303/32	NSK	Tapered Roller	32	75	20	14,600 lbs	0.445

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