TIMKEN 2578-2523-B Bearing

TIMKEN 2578-2523-B tapered bearings with Flange

Also known as : 2578-2523-B

• Inside Diameter: 28.575 mm
• Outside Diameter: 69.85 mm
• Width: 8.733 mm
• Basic dynamic load rating: 83.7 kN
• Basic static load rating: 94.4 kN

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TIMKEN 2578-2523-B Bearing

Series	2500
model	2578-2523-B
Cone Part Number	2578
Cup Part Number	2523-B
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.300 Kg 0.70 lb
Dimensions
d - Bore	28.575 mm 1.1250 in
D - Cup Outer Diameter	69.850 mm 2.7500 in
D1 - Flange Outer Diameter	73.711 mm 2.9020 in
B - Cone Width	25.357 mm 0.9983 in
C - Cup Width	19.050 mm 0.7500 in
C1 - Cup Flange Width	3.962 mm 0.1560 in
T - Bearing Width to Flange	8.733 mm 0.3438 in
T1 - Bearing Width	23.820 mm 0.9378 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	2.300 mm 0.090 in
r - Cup Backface "To Clear" Radius	1.5 mm 0.06 in
da - Cone Frontface Backing Diameter	35.10 mm 1.38 in
db - Cone Backface Backing Diameter	39.10 mm 1.54 in
Da - Cup Frontface Backing Diameter	66.04 mm 2.62 in
Ab - Cage-Cone Frontface Clearance	1.5 mm 0.06 in
Aa - Cage-Cone Backface Clearance	0.5 mm 0.02 in
a - Effective Center Location	-8.6 mm -0.34 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	21700 N 4880 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	83700 N 18800 lbf
C0 - Static Radial Rating	94400 N 21200 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	10200 N 2280 lbf
Factors
K - Factor	2.14
e - ISO Factor	0.27
Y - ISO Factor	2.19
G1 - Heat Generation Factor (Roller-Raceway)	23.6
G2 - Heat Generation Factor (Rib-Roller End)	9.63
Cg - Geometry Factor	0.0656

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 2578-2523-B bearings in stock, TSF (Tapered Single with Flange) Imperial , Tapered roller bearings.

Like the TS bearing design, the TSF design consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.