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Type E tapered roller bearing Mounted Bearings are available in a wide variety of sizes and configurations to meet the requirements of demanding applications. Popular part numbers are in stock for immediate availability. Metric sizes also are available in shaft diameters ranging from 35 mm to 125 mm.

1-3/16 to 3-1/2 utilize one collar
3-15/16 to 5 utilize two collars
6 holes equally spaced (chordal spacing shown)
Unit of Measure

Specifications

Shaft Size

 N/A 2 1/2 in

Shaft Size Type

 N/A Imperial

Lubrication

 N/A Grease - Premium Industrial

Housing Coating

 N/A E-Coat

Dimensions

Dimension B 

 N/A 4 in

Dimension H 

 N/A 7-5/8 in

Dimension A 

 N/A 3-5/16 in

Dimension N2

 N/A 4.6 in

Dimension J 

 N/A 6-1/2 in

Dimension A3 

 N/A 1-5/16 in

Bolt Diameter 

 N/A 1/2 in

Dimension E 

 N/A 1-13/16 in

Dimension A1 

 N/A 5/8 in
Dimension D 1 N/A 5-1/2 in

Dimension d1 

 N/A 4-1/16 in

Dimension A2 

 N/A 1-3/16 in

Radial and Thrust Factors; Speed and Slip-Fit Load Limits

e

 N/A 0.40

X (if Fa/Fr ≤ e)

 N/A 0.87

Y (if Fa/Fr ≤ e)

 N/A 2.17

X (if Fa/Fr > e)

 N/A 0.7

Y (if Fa/Fr > e)

 N/A 2.63

K Factor

 N/A 1.51
C90 Dynamic Load Rating2 N/A 11600 lbf

C0 Static Load Rating

 N/A 54000 lbf
Fa-max Maximum Permissible Thrust Load3 N/A 3454 lbf
Fr-max Maximum Allowable Slip Fit Radial Load4 N/A 9500 lbf
Max. Speed5 N/A 2420 rpm

Note

Note

 N/A
Note: All units have a 1/8" pipe thread grease fitting

The Maximum Permissible Thrust Load applies to conditions of slip fit with set screw mounting or in applications where a large moment loading occurs. The values shown are valid only when two collars and set screws are used.

When heavy thrust forces are applied, the friction between the pillow block base may not be sufficient to prevent movement. Mechanical stops or shear bars with strength sufficient to support the load should be added. Never weld the pillow block or bearing to secure it to the shaft or base.
  • 1 Tolerance +.000 /-.002 in
  • 2 C90 is the Dynamic Load Rating based on a rated Life of 90 million revolutions (3000 hrs at 500 RPM).
  • 3 Fa-max is based on the limits of the holding force of two properly tightened collars and set screws. Fifty percent of the values should be used when a single collar is installed.
  • 4 If the application loads approach or exceed Fr-max, the shaft fit should be adjusted to a line-to-line (g6 or h6) or light press fit (m6).
  • 5 Timken Double Lip Seal
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