LM102949/LM102910NSKTapered Roller

Name: NSK LM102949/LM102910 Tapered Roller Bearing
Brand: NSK
SKU: LM102949/LM102910

LM102949/LM102910 is a NSK tapered roller bearing, bore 45.24 mm, O.D. 73.43 mm, width 19.81 mm. Dimensions, drawing, interchanges and price.

Brass cageCone + cup assembly

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Bore d45.24mm

Outside dia. D73.43mm

Width B19.81mm

Dynamic Cr12,000lbs

Static C0r16,900lbs

Weight0.304kg

Cr / C0r0.71

Mean dia. dm59.3mm

Original catalogue drawing - NSK catalogue, page 135

LM102949/LM102910 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	45.242	1.7812
D	Outside diameter	73.431	2.891
B	Inner-ring / bearing width	19.812	0.78
T	Overall assembly width	19.558	0.77
C	Cup / outer-ring width	15.748	0.62
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)	45.242
Bore d (in)	1.7812
Outside dia. D (mm)	73.431
Outside dia. D (in)	2.8910
Width B (in)	0.7800
Overall width T (mm)	19.558
Overall width T (in)	0.7700
Cup width C (in)	0.6200

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	12000
Basic static load rating Cor (lbs)	16900
Effective centre a (in)	0.59

Weight

Cone weight (kg)	0.204
Cup weight (kg)	0.1
Total weight (kg)	0.304

Mounting dimensions (fillets / shoulders)

Chamfer r (in)	0.14
Chamfer r1 (in)	0.03
Shaft shoulder da min (in)	2.68
Shaft shoulder da (in)	1.97
Housing shoulder Da (in)	2.76

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	13,345	102	3,386
6	8,896	392	13,083
8	6,672	1,024	34,133
10	5,338	2,154	71,814
15	3,559	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 53,379 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
KLM102949-LM102910	FAG	Tapered Roller	45.24	73.43	19.81	57 kN	0.316
LM102949/LM102910	Timken	Tapered Roller	45.24	73.43	19.81	72.9 kN	0.31
LM102949/LM102911	Timken	Tapered Roller	45.24	73.43	19.81	72.9 kN	0.33

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
LM603049/LM603011	NSK	Tapered Roller	45.24	77.79	19.84	12,600 lbs	0.363
LM603049/LM603012	NSK	Tapered Roller	45.24	77.79	19.84	12,600 lbs	0.381
HR30209C	NSK	Tapered Roller	45	85	19	14,200 lbs	0.476
HR30209J	NSK	Tapered Roller	45	85	19	15,400 lbs	0.49
HR30210	NSK	Tapered Roller	45	90	20	94 kN	0.557
HR30309	NSK	Tapered Roller	45	100	25	138 kN	1.01
HR30309C	NSK	Tapered Roller	45	100	25	23,200 lbs	0.984
HR30309J	NSK	Tapered Roller	45	100	25	25,200 lbs	1.012

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