The Timken Company - Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings

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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 60 mm to 125 mm.

Open and Closed end covers available for purchase.

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Unit of Measure

Items	ESA-P4B-TRB-2 1/4 Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings	ESA-P4B-TRB-2 1/4E Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings	SAFSA-P4B-TRB-2 1/4 Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings	SAFSA-P4B-TRB-2 1/4E Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings	SNSA-P4B-TRB-2 1/4 Self-Aligning Tapered Roller Bearing Pillow Block: 4-Bolt Base Mounted Bearings
Shaft Size	N/A 2 1/4 in
Shaft Size Type	N/A Imperial
Dimension B	N/A 4 in	N/A 4 in	N/A 4 in	N/A 4 in	N/A 101.6 mm4 in
Dimension L	N/A 10-3/8 in	N/A 10-3/8 in	N/A 10-5/16 in	N/A 10-5/16 in	N/A 261.9 mm10-5/16 in
Dimension A	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 88.9 mm3-1/2 in
Dimension J Min.	N/A 7-3/4 in	N/A 7-3/4 in	N/A 7-1/2 in	N/A 7-1/2 in	N/A 190.5 mm7-1/2 in
Dimension J Max.	N/A 8-3/4 in	N/A 8-3/4 in	N/A 8-9/16 in	N/A 8-9/16 in	N/A 217.5 mm8-9/16 in
Bolt Diameter	N/A 5/8 in	N/A 5/8 in	N/A 1/2 in	N/A 1/2 in	N/A 16 mm5/8 in
Dimension N	N/A 3/4 in	N/A 3/4 in	N/A 9/16 in	N/A 9/16 in	N/A 17.5 mm11/16 in
Dimension N₁	N/A 1-1/4 in	N/A 1-1/4 in	N/A 1-3/32 in	N/A 1-3/32 in	N/A 27.8 mm1-3/32 in
Dimension N₂	N/A 1-7/8 in	N/A 1-7/8 in	N/A 2 in	N/A 2 in	N/A 48.4 mm1-29/32 in
Dimension H₁	N/A 1-5/8 in	N/A 1-5/8 in	N/A 1-3/8 in	N/A 1-3/8 in	N/A 38.9 mm1-17/32 in
Dimension H₂	N/A 6-1/16 in	N/A 6-1/16 in	N/A 6-5/16 in	N/A 6-5/16 in	N/A 163.9 mm6-29/64 in
Dimension d₁	N/A 4-1/16 in	N/A 4-1/16 in	N/A 4-1/16 in	N/A 4-1/16 in	N/A 103.2 mm4-1/16 in
Dimension H	N/A 2-3/4 in	N/A 2-3/4 in	N/A 3 in	N/A 3 in	N/A 80.2 mm3-5/32 in
Dimension W	N/A 6-13/32 in	N/A 6-13/32 in	N/A 6-13/32 in	N/A 6-13/32 in	N/A 162.7 mm6-13/32 in
EXPANSION	N/A	N/A 9/16 in	N/A	N/A 9/16 in	N/A
Weight	N/A 32.1 lb	N/A 32.1 lb	N/A 27.1 lb	N/A 27.1 lb	N/A 30.622 lb
e	N/A 0.40
X (if F_a/F_r ≤ e)	N/A 0.87
Y (if F_a/F_r ≤ e)	N/A 2.17
X (if F_a/F_r > e)	N/A 0.7
Y (if F_a/F_r > e)	N/A 2.63
K Factor	N/A 1.51
C₉₀ Dynamic Load Rating¹	N/A 11600 lbf
C₀ Static Load Rating	N/A 54000 lbf
F_a-max Maximum Permissible Thrust Load²	N/A 3454 lbf
F_r-max Maximum Allowable Slip Fit Radial Load³	N/A 9500 lbf
Max. Speed⁴	N/A 2420 rpm
Type E Open Cover Number	N/A
Type E Closed Cover Number	N/A
Lubrication	N/A Grease - Premium Industrial
Housing Type	N/A Type E Self-Aligning	N/A Type E Self-Aligning	N/A SAF Self-Aligning	N/A SAF Self-Aligning	N/A SN Self-Aligning
Housing Coating	N/A Powder Coat
¹ C₉₀ is the Dynamic Load Rating based on a rated Life of 90 million revolutions (3000 hrs at 500 RPM). ² 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. ³ 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). ⁴ Timken Double Lip Seal