TIMKEN 1280-1220 Bearing

TIMKEN 1280-1220 tapered roller bearings

Also known as : 1280-1220

• Inside Diameter: 22.225 mm
• Outside Diameter: 57.15 mm
• Width: 22.225 mm
• Basic dynamic load rating: 55.3 kN
• Basic static load rating: 55.1 kN

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TIMKEN 1280-1220 Bearing

Series	1200
model	1280-1220
Cone Part Number	1280
Cup Part Number	1220
Design Units	Imperial
Cage Type	Stamped Steel
Bearing Weight	0.300 Kg 0.60 lb
Dimensions
d - Bore	22.225 mm 0.8750 in
D - Cup Outer Diameter	57.150 mm 2.2500 in
B - Cone Width	22.225 mm 0.8750 in
C - Cup Width	17.463 mm 0.6875 in
T - Bearing Width	22.225 mm 0.8750 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius	0.760 mm 0.03 in
r - Cup Backface "To Clear" Radius	1.52 mm 0.06 in
da - Cone Frontface Backing Diameter	28.96 mm 1.14 in
db - Cone Backface Backing Diameter	29.46 mm 1.16 in
Da - Cup Frontface Backing Diameter	52.10 mm 2.07 in
Db - Cup Backface Backing Diameter	49.02 mm 1.93 in
Ab - Cage-Cone Frontface Clearance	1.5 mm 0.06 in
Aa - Cage-Cone Backface Clearance	0.3 mm 0.01 in
a - Effective Center Location	-6.9 mm -0.27 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)	14300 N 3230 lbf
C1 - Dynamic Radial Rating (1 million revolutions)	55300 N 12400 lbf
C0 - Static Radial Rating	55100 N 12400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)	8510 N 1910 lbf
Factors
K - Factor	1.69
e - ISO Factor	0.35
Y - ISO Factor	1.73
G1 - Heat Generation Factor (Roller-Raceway)	11.4
G2 - Heat Generation Factor (Rib-Roller End)	5.52
Cg - Geometry Factor	0.0556

TIMKEN 1280-1220 bearings, TS (Tapered Single) Imperial, Tapered roller bearings.