18690/18620DTimkenTapered Roller

Name: Timken 18690/18620D Tapered Roller Bearing
Brand: Timken
SKU: 18690/18620D

18690/18620D is a Timken tapered roller bearing, bore 46.04 mm, O.D. 79.38 mm, height 41.27 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

Request a quote WhatsApp Email us Search the catalog

Bore d46.04mm

Outside dia. D79.38mm

Overall width T41.27mm

Dynamic Cr90.6kN

Weight0.74kg

Mean dia. dm62.7mm

Original catalogue drawing - Timken TRB Catalog, page 524

18690/18620D 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	46.037	1.8125
D	Outside diameter	79.375	3.125
T	Overall assembly width	41.272	1.6249
C	Cup / outer-ring width	33.338	1.3125
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)	46.037
Bore d (in)	1.8125
Outside dia. D (mm)	79.375
Outside dia. D (in)	3.1250
Overall width T (mm)	41.272
Overall width T (in)	1.6249
Cup width C (mm)	33.338
Cup width C (in)	1.3125

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	20400
Basic dynamic load rating Cr (N)	90600
Dynamic rating C1 (N, ISO)	90600
Dynamic rating C1 (lbf, ISO)	20400
Radial rating C90 (N)	13500
Radial rating C90 (lbf)	3030
Thrust rating Ca90 (N)	8630
Thrust rating Ca90 (lbf)	1940
Factor e	0.37
Factor Y1	1.80
Factor Y2	2.69
Factor K	1.56
Geometry factor G1	23.9
Geometry factor G2	18.7
Geometry factor Cg	0.0725

Weight

Weight (kg)	0.74

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)	2.8
Housing fillet r max (mm)	0.8
Shaft shoulder db (mm)	56.0
Housing shoulder Da (mm)	74.0

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	22,650	102	3,386
6	15,100	392	13,083
8	11,325	1,024	34,133
10	9,060	2,154	71,814
15	6,040	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 90,600 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.524 (dimensions)
Series type	TDO

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

Series variants (different suffix)

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
18690/18620	Timken	Tapered Roller	46.04	79.38	17.46	52 kN	0.32

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
13181/13318	Timken	Tapered Roller	46.04	80.96	17.46	50.8 kN	0.37
13182D/13318	Timken	Tapered Roller	46.04	80.96	31.75	88.5 kN	0.73
25592/25520	Timken	Tapered Roller	46.04	82.93	25.4	90.5 kN	0.53
2984/2924	Timken	Tapered Roller	46.04	85	25.61	93.3 kN	0.61
2984/2925	Timken	Tapered Roller	46.04	87.31	25.61	93.3 kN	0.68
2984A/2924	Timken	Tapered Roller	46.04	85	25.61	93.3 kN	0.62
359-S/352	Timken	Tapered Roller	46.04	90.12	21.69	97 kN	0.65
359-S/3520	Timken	Tapered Roller	46.04	84.14	21.69	97 kN	0.55

Request a quotation for 18690/18620D

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