78250AC-78551

78250AC-78551 TS (Tapered Single Roller Bearings) (Imperial)
Part Number 78250AC-78551
Brand: LILY
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Equivalent: Timken
System of Measurement Inch
Type Bearing
Cone Part Number 78250AC
Cup Part Number 78551
Bearing Type Roller
Roller Bearing Type Tapered Roller
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 78000C
Bore Dia 2.5"
Bore Dia Tolerance +0.005" to 0
Outer Dia 5.513"
Outer Dia Tolerance +0.001" to 0
Cone Width 1.3085"
Cone Width Tolerance +0.003" to -0.01
Cup Width 0.926"
Cup Width Tolerance +0.002" to -0.01
Width 1.4375"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.2"
Cup Backface ToClear Radius 0.090"
Cone Frontface Backing Diameter 3.7"
Cone Backface Backing Diameter 3.66"
Cup Frontface Backing Diameter 5.22"
Cup Backface Backing Diameter 4.61"
Cage Cone Frontface Clearance 0.21"
Cage Cone Backface Clearance 0.22"
Effective Center Location 0.33"
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 53200 lbf
Static Radial Load 52600 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 13800 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 20400 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 5.5 lb

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78250AC-78551 TS (Single Row Tapered Roller Bearings) (Imperial) consist of a tapered inner ring assembly and an outer ring. 78250AC-78551 bore dia is 2.5". Its out dia is 5.513". 78250AC-78551 roller material is Chrome Steel. Its seal type is Open. The 78250AC-78551 TS (Single Row Tapered Roller Bearings) (Imperial) can bear both radial and axial loads with ease and provides low friction during operation even under the most severe conditions.


Typical applications include:

Gearing Systems and Transmissions, Thermal Power Coal Transporters, Port Equipment, Rubber and other Industrial applications, Machine Tool Spindles, Gear Reducer, Automotive Drive Axle, Aircraft wheels, Agricultural Wheels, Tensioning Roller, Raking Machine, Single Row and Mining Equipment, Railroad Axle-box, etc.


General Selection Factors

Several factors must be considered for choosing tapered roller bearings. These factors include the roller material, design, shields and seals, cage, Annual Bearing Engineering Committee (ABEC) grade, radial clearance, and lubricant, etc.