78255D-78571 TDI (Two-Row Double Inner Race) (Imperial)
Part Number 78255D-78571
System of Measurement Inch
Type Bearing
Cone Part Number 78255D
Cup Part Number 78571
Bearing Type Roller
Roller Bearing Type Tapered Roller
For Load Direction Combined
Construction Double Row
Seal Type Open
Cups Type Standard
Series 78000
Bore Dia 2.5586"
Bore Dia Tolerance +0.005" to 0
Outer Dia 5.708"
Outer Dia Tolerance +0.001" to 0
Double Cone Width 2.598"
Double Cone Width Tolerance +0.003" to -0.01
Cup Width 0.9058"
Cup Width Tolerance +0.002" to -0.01
Bearing Width Across Cups 2.5616"
Bearing Width Across Cups Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.06"
Cup Backface ToClear Radius 0.14"
Cup Frontface Backing Diameter 3.11"
Cup Backface Backing Diameter 4.65"
Dynamic Radial Load 66900 lbf
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Rating(One Row 90 Million Revolutions) 9970 lbf
Dynamic Thrust Rating(90 Million Revolutions) 14800 lbf
Dynamic Radial Rating(Two Row 90 Million Revolutions) 17400 lbf
Lubrication Required
Temperature Range -30° to 110 °C
ABEC Rating ABEC-1
Radial Clearance Standard (Available in C3/C4/C5)
RoHS Compliant
REACH Compliant
Weight 10.8 lb