NA48686/48620DTimkenTapered Roller

Name: Timken NA48686/48620D Tapered Roller Bearing
Brand: Timken
SKU: NA48686/48620D

NA48686/48620D is a Timken tapered roller bearing, bore 142.88 mm, O.D. 200.03 mm, height 93.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

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Bore d142.88mm

Outside dia. D200.03mm

Overall width T93.67mm

Dynamic Cr499kN

Weight8.41kg

Mean dia. dm171.4mm

Original catalogue drawing - Timken TRB Catalog, page 656

NA48686/48620D Timken 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	142.875	5.625
D	Outside diameter	200.025	7.875
T	Overall assembly width	93.665	3.6876
C	Cup / outer-ring width	73.025	2.875
r	Chamfer (min)	0.8	0.0315

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)	142.875
Bore d (in)	5.6250
Outside dia. D (mm)	200.025
Outside dia. D (in)	7.8750
Overall width T (mm)	93.665
Overall width T (in)	3.6876
Cup width C (mm)	73.025
Cup width C (in)	2.8750

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	112000
Basic dynamic load rating Cr (N)	499000
Dynamic rating C1 (N, ISO)	499000
Dynamic rating C1 (lbf, ISO)	112000
Radial rating C90 (N)	74300
Radial rating C90 (lbf)	16700
Thrust rating Ca90 (N)	42800
Thrust rating Ca90 (lbf)	9610
Factor e	0.34
Factor Y1	2.01
Factor Y2	2.99
Factor K	1.74

Weight

Weight (kg)	8.41

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)	3.5
Housing fillet r max (mm)	0.8
Shaft shoulder db (mm)	158.0
Housing shoulder Da (mm)	193.0

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	124,750	102	3,386
6	83,167	392	13,083
8	62,375	1,024	34,133
10	49,900	2,154	71,814
15	33,267	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 499,000 N. Hours = L₁₀ x 10⁶ / (60n). Life-modification factors for lubrication, contamination and temperature (a_ISO) are not included.

Source & traceability

Brand	Timken
Source catalogue	Timken Tapered Roller Bearing Catalog (2016)
Catalogue page	p.656 (dimensions)
Series type	TNA

ISO dynamic rating C1, Timken C90 / Ca90, static rating C0, geometry factors and assembly weight.

Same dimensions, same brand

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
NA48685SW/48620D	Timken	Tapered Roller	142.88	200.03	93.67	499 kN	8.43

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
36686/36620	Timken	Tapered Roller	142.88	193.68	28.57	196 kN	2.41
48684/48620	Timken	Tapered Roller	142.88	200.03	39.69	286 kN	3.75
48685/48620	Timken	Tapered Roller	142.88	200.03	39.69	286 kN	3.86
48685/48620D	Timken	Tapered Roller	142.88	200.03	87.31	499 kN	8.02
73562/73875	Timken	Tapered Roller	142.88	222.25	31.62	293 kN	4.11
73562/73876CD	Timken	Tapered Roller	142.88	222.25	75.69	510 kN	8.94
82562/82931	Timken	Tapered Roller	142.88	236.54	3.5	-	9.56
82562/82951CD	Timken	Tapered Roller	142.88	241.3	131.76	897 kN	22.49

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