NTN BEARING CORPORATION OF AMERICA
NTN BEARING CORPORATION OF AMERICA
Head Office
1600 E. Bishop Court, P.O. Box 7604
Mount Prospect, IL 60056-7604, U.S.A.
Phone: 847-298-7500
Fax: 847-699-9744
Toll Free: 800-323-2358
Email: mkt@ntnamerica.com
Website: www.ntnamericas.com
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Ultra-Class Four Bolt Flanged Unit with Set Screw
Ultra-Class Four Bolt Flanged Unit with Set Screw, ARFU Type - Dimensions
Unit of Measure
1 2 3 4 5 

Item #

d

L

J

A

A0

A1

Lubrication

Ball Material

Outside Diameter 

Outside Diameter

Bore Type

Outside Ring Width

Inside Ring Width

Clearance

Cage Material

Precision Rating

Radial Dynamic Load Rating

Radial Static Load Rating

Rotational Speed [Max]-Grease

ARFU-1 N/A 1 in25.400 mm N/A 3.7813 in96.0 mm N/A 2.75 in69.9 mm N/A 1.1875 in30.2 mm N/A 1.5160 in38.500 mm N/A 0.5938 in15.1 mm N/A Outer Ring N/A Through Hardened N/A 2.0470 in52.000 mm N/A 2.0470 in52.000 mm N/A Cylindrical N/A 0.5910 in15.000 mm N/A 1.0630 in27.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 3147 lbf14000 N N/A 1765 lbf7850 N N/A 4450 RPM
ARFU-1.1/2 N/A 1-1/2 in38.100 mm N/A 5.1563 in131.0 mm N/A 4 in101.6 mm N/A 1.5313 in38.9 mm N/A 2.0940 in53.200 mm N/A 0.6563 in16.7 mm N/A Outer Ring N/A Through Hardened N/A 3.1500 in80.000 mm N/A 3.1500 in80.000 mm N/A Cylindrical N/A 0.8660 in22.000 mm N/A 1.5750 in40.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 6542 lbf29100 N N/A 4002 lbf17800 N N/A 2800 RPM
ARFU-1.1/4 N/A 1-1/4 in31.750 mm N/A 4.6563 in118.3 mm N/A 3.625 in92.1 mm N/A 1.4063 in35.7 mm N/A 1.8270 in46.400 mm N/A 0.6563 in16.7 mm N/A Outer Ring N/A Through Hardened N/A 2.8350 in72.000 mm N/A 2.8350 in72.000 mm N/A Cylindrical N/A 0.7480 in19.000 mm N/A 1.3780 in35.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 5778 lbf25700 N N/A 3440 lbf15300 N N/A 3150 RPM
ARFU-1.1/4S N/A 1-1/4 in31.750 mm N/A 4.2813 in108.7 mm N/A 3.25 in82.6 mm N/A 1.3125 in33.3 mm N/A 1.6100 in40.900 mm N/A 0.625 in15.9 mm N/A Outer Ring N/A Through Hardened N/A 2.4410 in62.000 mm N/A 2.4410 in62.000 mm N/A Cylindrical N/A 0.7090 in18.000 mm N/A 1.1810 in30.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 4384 lbf19500 N N/A 2540 lbf11300 N N/A 3650 RPM
ARFU-1.1/8 N/A 1-1/8 in28.575 mm N/A 4.2813 in108.7 mm N/A 3.25 in82.6 mm N/A 1.3125 in33.3 mm N/A 1.6100 in40.900 mm N/A 0.625 in15.9 mm N/A Outer Ring N/A Through Hardened N/A 2.4410 in62.000 mm N/A 2.4410 in62.000 mm N/A Cylindrical N/A 0.7090 in18.000 mm N/A 1.1810 in30.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 4384 lbf19500 N N/A 2540 lbf11300 N N/A 3650 RPM
ARFU-1.11/16 N/A 1-11/16 in42.863 mm N/A 5.4063 in137.3 mm N/A 4.125 in104.8 mm N/A 1.5625 in39.7 mm N/A 2.1420 in54.400 mm N/A 0.7188 in18.3 mm N/A Outer Ring N/A Through Hardened N/A 3.3460 in85.000 mm N/A 3.3460 in85.000 mm N/A Cylindrical N/A 0.8660 in22.000 mm N/A 1.6340 in41.500 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 7306 lbf32500 N N/A 4609 lbf20500 N N/A 2600 RPM
ARFU-1.15/16 N/A 1-15/16 in49.213 mm N/A 5.6563 in143.7 mm N/A 4.375 in111.1 mm N/A 1.8125 in46.0 mm N/A 2.3580 in59.900 mm N/A 0.7813 in19.8 mm N/A Outer Ring N/A Through Hardened N/A 3.5430 in90.000 mm N/A 3.5430 in90.000 mm N/A Cylindrical N/A 0.8660 in22.000 mm N/A 1.6930 in43.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 7891 lbf35100 N N/A 5193 lbf23100 N N/A 2350 RPM
ARFU-1.3/16 N/A 1-3/16 in30.163 mm N/A 4.2813 in108.7 mm N/A 3.25 in82.6 mm N/A 1.3125 in33.3 mm N/A 1.6100 in40.900 mm N/A 0.625 in15.9 mm N/A Outer Ring N/A Through Hardened N/A 2.0470 in52.000 mm N/A 2.0470 in52.000 mm N/A Cylindrical N/A 0.5910 in15.000 mm N/A 1.0630 in27.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 4451 lbf19800 N N/A 2540 lbf11300 N N/A 3650 RPM
ARFU-1.3/4 N/A 1-3/4 in44.450 mm N/A 5.4063 in137.3 mm N/A 4.125 in104.8 mm N/A 1.5625 in39.7 mm N/A 2.1420 in54.400 mm N/A 0.7188 in18.3 mm N/A Outer Ring N/A Through Hardened N/A 3.3460 in85.000 mm N/A 3.3460 in85.000 mm N/A Cylindrical N/A 0.8660 in22.000 mm N/A 1.6340 in41.500 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 7351 lbf32700 N N/A 4609 lbf20500 N N/A 2600 RPM
ARFU-1.3/8 N/A 1-3/8 in34.925 mm N/A 4.6563 in118.3 mm N/A 3.625 in92.1 mm N/A 1.4063 in35.7 mm N/A 1.8270 in46.400 mm N/A 0.6563 in16.7 mm N/A Outer Ring N/A Through Hardened N/A 2.8350 in72.000 mm N/A 2.8350 in72.000 mm N/A Cylindrical N/A 0.7480 in19.000 mm N/A 1.3780 in35.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 5778 lbf25700 N N/A 3440 lbf15300 N N/A 3150 RPM
ARFU-1.5/8 N/A 1-5/8 in41.275 mm N/A 5.4063 in137.3 mm N/A 4.125 in104.8 mm N/A 1.5625 in39.7 mm N/A 2.1420 in54.400 mm N/A 0.7188 in18.3 mm N/A Outer Ring N/A Through Hardened N/A 3.3460 in85.000 mm N/A 3.3460 in85.000 mm N/A Cylindrical N/A 0.8660 in22.000 mm N/A 1.6340 in41.500 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 7306 lbf32500 N N/A 4609 lbf20500 N N/A 2600 RPM
ARFU-1.7/16 N/A 1-7/16 in36.513 mm N/A 4.6563 in118.3 mm N/A 3.625 in92.1 mm N/A 1.4063 in35.7 mm N/A 1.8270 in46.400 mm N/A 0.6563 in16.7 mm N/A Outer Ring N/A Through Hardened N/A 2.8350 in72.000 mm N/A 2.8350 in72.000 mm N/A Cylindrical N/A 0.7480 in19.000 mm N/A 1.3780 in35.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 5778 lbf25700 N N/A 3440 lbf15300 N N/A 3150 RPM
ARFU-2 N/A 2-1/8 in53.975 mm N/A 6.4063 in162.7 mm N/A 5.125 in130.2 mm N/A 1.9375 in49.2 mm N/A 2.4370 in61.900 mm N/A 0.8125 in20.6 mm N/A Outer Ring N/A Through Hardened N/A 3.9370 in100.000 mm N/A 3.9370 in100.000 mm N/A Cylindrical N/A 0.9450 in24.000 mm N/A 1.6930 in43.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 9734 lbf43300 N N/A 6542 lbf29100 N N/A 2150 RPM
ARFU-2.3/16 N/A 2-1/8 in53.975 mm N/A 6.4063 in162.7 mm N/A 5.125 in130.2 mm N/A 1.9375 in49.2 mm N/A 2.4380 in61.913 mm N/A 0.8125 in20.6 mm N/A Outer Ring N/A Through Hardened N/A 3.9370 in100.000 mm N/A 3.9370 in100.000 mm N/A Cylindrical N/A 0.9450 in24.000 mm N/A 1.6930 in43.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 10791 lbf48000 N N/A 6564 lbf29200 N N/A 2150 RPM
ARFU-2S N/A 2 in50.800 mm N/A 5.6563 in143.7 mm N/A 4.375 in111.1 mm N/A 1.8125 in46.0 mm N/A 2.3580 in59.900 mm N/A 0.7813 in19.8 mm N/A Outer Ring N/A Through Hardened N/A 2.0470 in52.000 mm N/A 2.0470 in52.000 mm N/A Cylindrical N/A 0.5910 in15.000 mm N/A 1.0630 in27.000 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 7891 lbf35100 N N/A 5193 lbf23100 N N/A 2350 RPM
ARFU-3/4 N/A 3/4 in19.050 mm N/A 3.3750 in85.7 mm N/A 2.5 in63.5 mm N/A 1.1563 in29.4 mm N/A 1.4530 in36.909 mm N/A 0.5938 in15.1 mm N/A Outer Ring N/A Through Hardened N/A 1.8500 in47.000 mm N/A 1.8500 in47.000 mm N/A Cylindrical N/A 0.5910 in15.000 mm N/A 1.0040 in25.500 mm N/A CN N/A Nylon N/A ISO Class 0 N/A 3192 lbf14200 N N/A 1495 lbf6650 N N/A 5000 RPM
UCFU-1 N/A 1 in25.400 mm N/A 3.7813 in96.0 mm N/A 2.75 in69.9 mm N/A 1.1875 in30.2 mm N/A 1.5313 in38.900 mm N/A 0.5938 in15.1 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/16 N/A 1-1/16 in26.988 mm N/A 4.2813 in108.7 mm N/A 3.25 in82.6 mm N/A 1.3125 in33.3 mm N/A 1.6563 in42.100 mm N/A 0.625 in15.9 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/2 N/A 1-1/2 in38.100 mm N/A 5.1563 in131.0 mm N/A 4 in101.6 mm N/A 1.5313 in38.9 mm N/A 2.1406 in54.400 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/2M/LP03 N/A 1-1/2 in38.100 mm N/A 5.1563 in131.0 mm N/A 4 in101.6 mm N/A 1.5313 in38.9 mm N/A 2.1406 in54.300 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/2M/LP06 N/A 1-1/2 in38.100 mm N/A 5.1563 in131.0 mm N/A 4 in101.6 mm N/A 1.5313 in38.9 mm N/A 2.1406 in54.300 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/2MFG1 N/A 1-1/2 in38.100 mm N/A 5.1563 in131.0 mm N/A 4 in101.6 mm N/A 1.5313 in38.9 mm N/A 2.1406 in54.300 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/4 N/A 1-1/4 in31.750 mm N/A 4.6563 in118.3 mm N/A 3.625 in92.1 mm N/A 1.4063 in35.7 mm N/A 1.8281 in46.400 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/4MFG1 N/A 1-1/4 in31.750 mm N/A 4.6563 in118.3 mm N/A 3.625 in92.1 mm N/A 1.4063 in35.7 mm N/A 1.8281 in46.400 mm N/A 0.6563 in16.7 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
UCFU-1.1/4S N/A 1-1/4 in31.750 mm N/A 4.2813 in108.7 mm N/A 3.25 in82.6 mm N/A 1.3125 in33.3 mm N/A 1.6563 in42.100 mm N/A 0.625 in15.9 mm N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A
Unit of Measure
1 2 3 4 5