2585/2523DTimkenTapered Roller

Name: Timken 2585/2523D Tapered Roller Bearing
Brand: Timken
SKU: 2585/2523D

2585/2523D is a Timken tapered roller bearing, bore 33.34 mm, O.D. 69.85 mm, height 66.67 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

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Bore d33.34mm

Outside dia. D69.85mm

Overall width T66.67mm

Dynamic Cr146kN

Weight1.15kg

Mean dia. dm51.6mm

Original catalogue drawing - Timken TRB Catalog, page 516

2585/2523D 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	33.337	1.3125
D	Outside diameter	69.85	2.75
T	Overall assembly width	66.675	2.625
C	Cup / outer-ring width	57.15	2.25
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)	33.337
Bore d (in)	1.3125
Outside dia. D (mm)	69.850
Outside dia. D (in)	2.7500
Overall width T (mm)	66.675
Overall width T (in)	2.6250
Cup width C (mm)	57.150
Cup width C (in)	2.2500

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	32800
Basic dynamic load rating Cr (N)	146000
Dynamic rating C1 (N, ISO)	146000
Dynamic rating C1 (lbf, ISO)	32800
Radial rating C90 (N)	21700
Radial rating C90 (lbf)	4880
Thrust rating Ca90 (N)	10200
Thrust rating Ca90 (lbf)	2280
Factor e	0.27
Factor Y1	2.47
Factor Y2	3.67
Factor K	2.14
Geometry factor G1	23.6
Geometry factor G2	9.6
Geometry factor Cg	0.0656

Weight

Weight (kg)	1.15

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)	3.5
Housing fillet r max (mm)	0.8
Shaft shoulder db (mm)	45.0
Housing shoulder Da (mm)	64.0

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	36,500	102	3,386
6	24,333	392	13,083
8	18,250	1,024	34,133
10	14,600	2,154	71,814
15	9,733	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 146,000 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.516 (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
2585/2520	Timken	Tapered Roller	33.34	66.42	25.36	83.7 kN	0.39
2585/2523	Timken	Tapered Roller	33.34	69.85	25.36	83.7 kN	0.44
2585/2523-S	Timken	Tapered Roller	33.34	69.85	25.36	83.7 kN	0.44

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
16131/16284	Timken	Tapered Roller	33.34	72.24	20.64	56.6 kN	0.39
16582/16522	Timken	Tapered Roller	33.34	68.26	22.23	66.7 kN	0.38
1680/1620	Timken	Tapered Roller	33.34	66.67	20.64	52.5 kN	0.31
2581/2523	Timken	Tapered Roller	33.34	69.85	25.36	83.7 kN	0.44
2581/2523-S	Timken	Tapered Roller	33.34	69.85	25.36	83.7 kN	0.44
26131/26282D	Timken	Tapered Roller	33.34	71.44	42.86	121 kN	0.76
26131/26283	Timken	Tapered Roller	33.34	72	18.92	69.6 kN	0.35
26131/26283-S	Timken	Tapered Roller	33.34	72	18.92	69.6 kN	0.35

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