J28577/28520TimkenTapered Roller

Name: Timken J28577/28520 Tapered Roller Bearing
Brand: Timken
SKU: J28577/28520

J28577/28520 is a Timken tapered roller bearing, bore 45 mm, O.D. 89.98 mm, width 25.4 mm. Dimensions, drawing, interchanges and price.

Cone + cup assembly

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Bore d45mm

Outside dia. D89.98mm

Width B25.4mm

Dynamic Cr117kN

Static C0r130kN

Weight0.75kg

Cr / C0r0.9

Mean dia. dm67.5mm

Original catalogue drawing - Timken TRB Catalog, page 182

J28577/28520 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	45	1.7717
D	Outside diameter	89.98	3.5425
B	Inner-ring / bearing width	25.4	1
T	Overall assembly width	24.75	0.9744
C	Cup / outer-ring width	19.987	0.7869
r	Chamfer (min)	2.3	0.0906

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)	45.000
Bore d (in)	1.7717
Outside dia. D (mm)	89.980
Outside dia. D (in)	3.5425
Width B (mm)	25.400
Overall width T (mm)	24.750
Overall width T (in)	0.9744
Cup width C (mm)	19.987

Load ratings & speeds

Basic dynamic load rating Cr (lbs)	26400
Basic static load rating Cor (lbs)	29200
Basic dynamic load rating Cr (N)	117000
Basic static load rating C0r (N)	130000
Dynamic rating C1 (N, ISO)	117000
Dynamic rating C1 (lbf, ISO)	26400
Radial rating C90 (N)	30400
Radial rating C90 (lbf)	6830
Thrust rating Ca90 (N)	19600
Thrust rating Ca90 (lbf)	4410
Static rating C0 (N)	130000
Static rating C0 (lbf)	29200
Factor e	0.38
Factor Y	1.59
Factor K	1.55
Geometry factor G1	46.4
Geometry factor G2	18.9
Geometry factor Cg	0.0912
Effective load centre a (mm)	-4.8

Weight

Weight (kg)	0.75

Mounting dimensions (fillets / shoulders)

Shaft fillet R max (mm)	0.8
Housing fillet r max (mm)	2.3
Shaft shoulder da (mm)	57.0
Shaft shoulder db (mm)	55.0
Housing shoulder Da (mm)	86.0
Housing shoulder Db (mm)	81.0
Cage projection Aa (mm)	1.4
Cage projection Ab (mm)	1.1

Bearing life (ISO 281 basic rating life)

C / P	Equivalent load P (N)	L₁₀ (10⁶ rev)	L_10h at 500 rpm
4	29,250	102	3,386
6	19,500	392	13,083
8	14,625	1,024	34,133
10	11,700	2,154	71,814
15	7,800	8,323	277,449

Basic rating life per ISO 281: L₁₀ = (C/P)^10/3 with C = 117,000 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.182 (dimensions)
Series type	TS

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

Nearby bore sizes

Designation	Brand	Type	d	D	B/T	Dyn. rating	kg
30209	Timken	Tapered Roller	45	85	19	80 kN	0.49
30309	Timken	Tapered Roller	45	100	25	129 kN	1.01
31309	Timken	Tapered Roller	45	100	25	106 kN	0.94
32009X	Timken	Tapered Roller	45	75	20	66.4 kN	0.34
32209	Timken	Tapered Roller	45	85	23	87.5 kN	0.58
32309	Timken	Tapered Roller	45	100	36	154 kN	1.36
33109	Timken	Tapered Roller	45	80	26	95.1 kN	0.54
33209	Timken	Tapered Roller	45	85	32	125 kN	0.79

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