9378-9321 TS (Tapered Single Roller Bearings) (Imperial)
Part Number 9378-9321
Brand: LILY Brand: LILY
Equivalent: Timken
System of Measurement Inch
Type Bearing
Cone Part Number 9378
Cup Part Number 9321
Bearing Type Roller
Roller Bearing Type Tapered Roller
For Load Direction Combined
Construction Single Row
Seal Type Open
Cups Type Standard
Series 9300
Bore Dia 3"
Bore Dia Tolerance +0.005" to 0
Outer Dia 6.75"
Outer Dia Tolerance +0.001" to 0
Cone Width 2"
Cone Width Tolerance +0.003" to -0.01
Cup Width 1.25"
Cup Width Tolerance +0.002" to -0.01
Width 2.0265"
Width Tolerance +0.008" to 0
Cone Backface ToClear Radius 0.14"
Cup Backface ToClear Radius 0.130"
Cone Frontface Backing Diameter 4.57"
Cone Backface Backing Diameter 4.13"
Cup Frontface Backing Diameter 6.48"
Cup Backface Backing Diameter 5.79"
Cage Cone Frontface Clearance 0.13"
Cage Cone Backface Clearance 0.44"
Effective Center Location 0.05"
Ring Material Chrome Steel
Roller Material Chrome Steel
Cage Material Steel
Dynamic Radial Load 81600 lbf
Static Radial Load 78800 lbf
Dynamic Radial Rating(90 Million Revolutions)(C90) 21200 lbf
Dynamic Thrust Rating(90 Million Revolutions)(Ca90) 27700 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 11.8 lb

9378-9321 TS (Single Row Tapered Roller Bearings) (Imperial) consist of a tapered inner ring assembly and an outer ring. 9378-9321 bore dia is 3". Its out dia is 6.75". 9378-9321 roller material is Chrome Steel. Its seal type is Open. The 9378-9321 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.