The Timken Company - Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)

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Timken® Self-Aligning Tapered Roller Bearing Mounted Bearings are designed for applications from aggregate and steel to mining and power generation. The heavy duty housing and cartridge are made from cast steel to stand up to the harshest conditions, and are designed to accept +/-4 degrees of misalignment.. Metric sizes also are available in shaft diameters ranging from 35 mm to 125 mm.

Open and Closed end covers available for purchase.

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Unit of Measure

Items	ESA-4BFA-TRB-1 3/16 Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)	ESA-4BFA-TRB-1 3/16E Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)	ESA-4BFA-TRB-1 1/4 Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)	ESA-4BFA-TRB-1 1/4E Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)	ESA-4BFA-TRB-1 3/8 Single Collar - Self-Aligning Tapered Roller Bearing Flange: 4-Bolt Flange Mounted Bearings (Type E Self-Aligning)
Shaft Size	N/A 1 3/16 in	N/A 1 3/16 in	N/A 1 1/4 in	N/A 1 1/4 in	N/A 1 3/8 in
Shaft Size Type	N/A Imperial
Dimension B	N/A 2-3/8 in	N/A 2-3/8 in	N/A 2-3/8 in	N/A 2-3/8 in	N/A 2-17/32 in
Dimension L	N/A 4 in	N/A 4 in	N/A 4 in	N/A 4 in	N/A 4 5/8 in
Dimension A	N/A 2 5/16 in	N/A 2 5/16 in	N/A 2 5/16 in	N/A 2 5/16 in	N/A 2 9/16 in
Dimension J	N/A 2 7/8 in	N/A 2 7/8 in	N/A 2 7/8 in	N/A 2 7/8 in	N/A 3 1/2 in
Bolt Diameter	N/A 3/8 in	N/A 3/8 in	N/A 3/8 in	N/A 3/8 in	N/A 1/2 in
Dimension A₂	N/A 27/64 in	N/A 27/64 in	N/A 27/64 in	N/A 27/64 in	N/A 33/64 in
Dimension A₁	N/A 1 in
Dimension D ¹	N/A 3 1/2 in	N/A 3 1/2 in	N/A 3 1/2 in	N/A 3 1/2 in	N/A 4 in
Dimension d₁	N/A 2-1/4 in	N/A 2-1/4 in	N/A 2-1/4 in	N/A 2-1/4 in	N/A 2-3/4 in
Weight	N/A 5.8 lb	N/A 5.8 lb	N/A 5.8 lb	N/A 5.8 lb	N/A 8.1 lb
EXPANSION	N/A
e	N/A 0.49	N/A 0.49	N/A 0.49	N/A 0.49	N/A 0.46
X (if F_a/F_r ≤ e)	N/A 0.87
Y (if F_a/F_r ≤ e)	N/A 1.77	N/A 1.77	N/A 1.77	N/A 1.77	N/A 1.89
X (if F_a/F_r > e)	N/A 0.7
Y (if F_a/F_r > e)	N/A 2.14	N/A 2.14	N/A 2.14	N/A 2.14	N/A 2.28
K Factor	N/A 1.23	N/A 1.23	N/A 1.23	N/A 1.23	N/A 1.31
C₉₀ Dynamic Load Rating²	N/A 3810 lbf	N/A 3810 lbf	N/A 3810 lbf	N/A 3810 lbf	N/A 6100 lbf
C₀ Static Load Rating	N/A 15760 lbf	N/A 15760 lbf	N/A 15760 lbf	N/A 15760 lbf	N/A 26000 lbf
F_a-max Maximum Permissible Thrust Load³	N/A 2000 lbf	N/A 2000 lbf	N/A 2000 lbf	N/A 2000 lbf	N/A 2590 lbf
F_r-max Maximum Allowable Slip Fit Radial Load⁴	N/A 3100 lbf	N/A 3100 lbf	N/A 3100 lbf	N/A 3100 lbf	N/A 5000 lbf
Max. Speed⁵	N/A 4490 rpm	N/A 4490 rpm	N/A 4490 rpm	N/A 4490 rpm	N/A 3820 rpm
Type E Closed Cover Number	N/A
Type E Open Cover Number	N/A
Lubrication	N/A Grease - Premium Industrial
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 F_a-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 F_r-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