KOYO 21078/21212 tapered roller bearings

100% Authentic. KOYO 21078/21212 tapered roller bearings Needle Roller Raceway Ring Shape Highest 20000 Revolution Frequency(rpm) Quality. Shandong Chik Bearing Co., Ltd. Certified Supplier.

What is 21078/21212 bearing interchange?

Brand Name:KOYO
Model Number:21078/21212
Series:L269100
Cone Part Number:L269143
Cup Part Number:L269110
Design Units:Imperial
Bearing Weight:22.8 Kg
Cage Type:Pin-Type
d:431.800 mm
D:533.400 mm
PDF 21078/21212

Product Details

SeriesL269100
Cone Part NumberL269143
Cup Part NumberL269110
Design UnitsImperial
Bearing Weight22.8 Kg
Cage TypePin-Type
d431.800 mm
D533.400 mm
B - Cone Width50.8 mm
C - Cup Width36.513 mm
B50.800 mm
R - Cone Backface To Clear Radius13.300 mm
r - Cup Backface To Clear Radius23.30 mm
da - Cone Frontface Backing Diameter445.01 mm
db - Cone Backface Backing Diameter450.09 mm
Da - Cup Frontface Backing Diameter525.02 mm
Db - Cup Backface Backing Diameter515.87 mm
Ab - Cage-Cone Frontface Clearance3.6 mm
Aa - Cage-Cone Backface Clearance1.8 mm
a - Effective Center Location325.9 mm
C90 - Dynamic Radial Rating (90 million revolutions)446200 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5178000 lbf
C0 - Static Radial Rating396000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)626300 lbf
K - Factor71.76
e - ISO Factor80.33
Y - ISO Factor91.8
G1 - Heat Generation Factor (Roller-Raceway)3088.3
G2 - Heat Generation Factor (Rib-Roller End)671.4
Cg - Geometry Factor0.185
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