AMI Bearings, Inc.
AMI Bearings, Inc.
570 North Wheeling Road
Mount Prospect, IL 60056
Phone: 800.882.8642 or 847.759.0620
Fax: 847.759.0630
Email: amiorders@amibearings.com
Website: www.amibearings.com
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  • Insert
    • Set Screw Locking
    • Heavy Duty
    • Wide Inner Ring
    • AISI 52100 Steel
  • Housing
    • Pillow Block
    • Cast Iron
Set Screw Locking Pillow Block Unit, UCSAO300 Series
Set Screw Locking Pillow Block Unit, UCSAO300 Series-2
Unit of Measure
1 2 

Item #

Shaft Diameter

h

a

b

g

w

Bi

UCSAO306-19 N/A 1-3/16 in N/A 2-3/8 in N/A 8-1/4 in N/A 2-3/8 in N/A 7/8 in N/A 4-1/4 in N/A 1.693 in
UCSAO307-20 N/A 1-1/4 in N/A 2-3/4 in N/A 10-5/8 in N/A 2-3/4 in N/A 15/16 in N/A 4-13/16 in N/A 1.890 in
UCSAO307-23 N/A 1-7/16 in N/A 2-3/4 in N/A 10-5/8 in N/A 2-3/4 in N/A 15/16 in N/A 4-13/16 in N/A 1.890 in
UCSAO308-24 N/A 1-1/2 in N/A 3-1/8 in N/A 11-3/8 in N/A 3-1/8 in N/A 1-3/16 in N/A 5-45/64 in N/A 2.047 in
UCSAO309-27 N/A 1-11/16 in N/A 3-1/8 in N/A 11-3/8 in N/A 3-1/8 in N/A 1-3/16 in N/A 5-45/64 in N/A 2.244 in
UCSAO309-28 N/A 1-3/4 in N/A 3-1/8 in N/A 11-3/8 in N/A 3-1/8 in N/A 1-3/16 in N/A 5-45/64 in N/A 2.244 in
UCSAO310-30 N/A 1-7/8 in N/A 3-1/8 in N/A 11-3/8 in N/A 3-1/8 in N/A 1-19/64 in N/A 5-53/64 in N/A 2.402 in
UCSAO310-31 N/A 1-15/16 in N/A 3-1/8 in N/A 11-3/8 in N/A 3-1/8 in N/A 1-19/64 in N/A 5-53/64 in N/A 2.402 in
UCSAO311-32 N/A 2 in N/A 3-3/4 in N/A 12-19/32 in N/A 3-1/2 in N/A 1-13/32 in N/A 6-45/64 in N/A 2.598 in
UCSAO311-35 N/A 2-3/16 in N/A 3-3/4 in N/A 12-19/32 in N/A 3-1/2 in N/A 1-13/32 in N/A 6-45/64 in N/A 2.598 in
UCSAO312-39 N/A 2-7/16 in N/A 4-1/8 in N/A 13-3/4 in N/A 4 in N/A 1-1/2 in N/A 7-21/64 in N/A 2.795 in
UCSAO314-43 N/A 2-11/16 in N/A 4-9/16 in N/A 15-23/64 in N/A 4-3/8 in N/A 1-3/4 in N/A 8-1/4 in N/A 3.071 in
UCSAO314-44 N/A 2-3/4 in N/A 4-9/16 in N/A 15-23/64 in N/A 4-3/8 in N/A 1-3/4 in N/A 8-1/4 in N/A 3.071 in
UCSAO315-47 N/A 2-15/16 in N/A 4-9/16 in N/A 15-23/64 in N/A 4-3/8 in N/A 1-57/64 in N/A 8-45/64 in N/A 3.228 in
UCSAO315-48 N/A 3 in N/A 4-9/16 in N/A 15-23/64 in N/A 4-3/8 in N/A 1-57/64 in N/A 8-45/64 in N/A 3.228 in
UCSAO316-51 N/A 3-3/16 in N/A 4-9/16 in N/A 15-23/64 in N/A 4-3/8 in N/A 1-59/64 in N/A 8-25/32 in N/A 3.386 in
UCSAO318-55 N/A 3-7/16 in N/A 5-1/8 in N/A 16-7/64 in N/A 4-3/4 in N/A 2-1/4 in N/A 9-7/8 in N/A 3.780 in
UCSAO318-56 N/A 3-1/2 in N/A 5-1/8 in N/A 16-7/64 in N/A 4-3/4 in N/A 2-1/4 in N/A 9-7/8 in N/A 3.780 in
UCSAO320-63 N/A 3-15/16 in N/A 5-11/16 in N/A 17-21/64 in N/A 5-1/8 in N/A 2-9/16 in N/A 11-1/16 in N/A 4.252 in
UCSAO320-64 N/A 4 in N/A 5-11/16 in N/A 17-21/64 in N/A 5-1/8 in N/A 2-9/16 in N/A 11-1/16 in N/A 4.252 in
UCSAO306 N/A 30 mm N/A 60.3 mm N/A 209 mm N/A 60 mm N/A 22 mm N/A 108 mm N/A 43 mm
UCSAO307 N/A 35 mm N/A 69.8 mm N/A 270 mm N/A 70 mm N/A 24 mm N/A 122 mm N/A 48 mm
UCSAO308 N/A 40 mm N/A 79.4 mm N/A 289 mm N/A 79 mm N/A 30 mm N/A 145 mm N/A 52 mm
UCSAO309 N/A 45 mm N/A 79.4 mm N/A 289 mm N/A 79 mm N/A 30 mm N/A 145 mm N/A 57 mm
UCSAO310 N/A 50 mm N/A 79.4 mm N/A 289 mm N/A 79 mm N/A 33 mm N/A 148 mm N/A 61 mm
Unit of Measure
1 2