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Emerson Bearing Company
201 Brighton Avenue
Boston, MA 02134
Phone: (800) 225-4587 • Fax: (800) 252-1996
Email: info@emersonbearing.com
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Inch Style Taper Roller bearings are designed to take combined heavy radial and thrust loads. Since the bearings can only support axial loads in one direction, a second laterally reversed bearing is required for counterstay.
Taper Roller Bearings Inches
Unit of Measure
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Cone/Cup Item #

(d) Bore Diameter

(D) Outside Diameter

(T) Width

34306/34478 N/A 3.0625 in N/A 4.7812 in N/A 0.9688 in
JM 515649/JM 515610 N/A 3.1496 in N/A 5.1181 in N/A 1.3780 in
496/493 N/A 3.1875 in N/A 5.3750 in N/A 1.1875 in
740/742 N/A 3.1875 in N/A 5.9090 in N/A 1.7500 in
495/492 A N/A 3.2500 in N/A 5.2500 in N/A 1.1875 in
495/492 N/A 3.2500 in N/A 5.2500 in N/A 1.3125 in
495/493 N/A 3.2500 in N/A 5.3750 in N/A 1.1875 in
580/572 N/A 3.2500 in N/A 5.5115 in N/A 1.4375 in
580/572 A N/A 3.2500 in N/A 5.5111 in N/A 1.3878 in
580/572 X N/A 3.2500 in N/A 5.5000 in N/A 1.4375 in
663/653 N/A 3.2500 in N/A 5.7500 in N/A 1.6250 in
749 A/742 N/A 3.2500 in N/A 5.9090 in N/A 1.7500 in
27687/27620 N/A 3.2500 in N/A 4.9375 in N/A 1.0000 in
47686/47620 N/A 3.2500 in N/A 5.2500 in N/A 1.3125 in
HM 516449 C/HM 516410 N/A 3.2500 in N/A 5.2500 in N/A 1.5625 in
27690/27620 N/A 3.2813 in N/A 4.9375 in N/A 1.0000 in
498/492 A N/A 3.3125 in N/A 5.2500 in N/A 1.1875 in
498/493 N/A 3.3125 in N/A 5.3750 in N/A 1.1875 in
JHM 516849/JHM 516810 N/A 3.3465 in N/A 5.5118 in N/A 1.5354 in
JM 716649/JM 716610 N/A 3.3465 in N/A 5.1181 in N/A 1.1811 in
749/742 N/A 3.3475 in N/A 5.9090 in N/A 1.7500 in
749 S/742 N/A 3.3475 in N/A 5.9090 in N/A 1.7500 in
497/492 A N/A 3.3750 in N/A 5.2500 in N/A 1.1875 in
497/493 N/A 3.3750 in N/A 5.3750 in N/A 1.1875 in
593/592 A N/A 3.5000 in N/A 6.0000 in N/A 1.5625 in
Unit of Measure
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