TIMKEN 12580-12520 tapered roller bearings | Bearing Kingdom | Supply Bearing in stock | Best Bearing Service | Bearing Manufacturer‎-www.bearingkingdom.com

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TIMKEN 12580-12520 tapered roller bearings

Inside Diameter: 20.638 mm

Outside Diameter: 49.225 mm

Width: 19.845 mm

Basic dynamic load rating: 43.6 kN

Basic static load rating: 43.2 kN

Dimensions
model	12580-12520
Cone Part Number	12580
Cup Part Number	12520
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.200 Kg 0.4 lb
d - Bore	20.638 mm 0.8125 in
D - Cup Outer Diameter	49.225 mm 1.9380 in
B - Cone Width	19.845 mm 0.7813 in
C - Cup Width	15.875 mm 0.6250 in
T - Bearing Width	19.845 mm 0.7813 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	1.520 mm 0.06 in
r - Cup Backface "To Clear" Radius	1.52 mm 0.06 in
da - Cone Frontface Backing Diameter	25.91 mm 1.02 in
db - Cone Backface Backing Diameter	28.45 mm 1.12 in
Da - Cup Frontface Backing Diameter	45.97 mm 1.81 in
Db - Cup Backface Backing Diameter	42.42 mm 1.67 in
Ab - Cage-Cone Frontface Clearance	2 mm 0.08 in
Aa - Cage-Cone Backface Clearance	0.3 mm 0.01 in
a - Effective Center Location	-7.10 mm -0.28 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	11300 N 2540 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	43600 N 9810 lbf
C0 - Static Radial Rating	43200 N 9720 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	6260 N 1410 lbf
Factors
K - Factor	1.81
e - ISO Factor	0.32
Y - ISO Factor	1.86
G1 - Heat Generation Factor (Roller-Raceway)	8.6
G2 - Heat Generation Factor (Rib-Roller End)	6.21
Cg - Geometry Factor	0.0495