Aurora Bearing Company
Aurora Bearing Company
901 Aucutt Rd.
Montgomery, IL 60538
Phone: 630.859.2030 • Fax: 630.859.0971
Email: customersupport@aurorabearing.com • Website: www.aurorabearing.com
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Timken® angular contact ball bearings are designed for combination radial and axial loading. Single-row bearings have high thrust capacity in one direction. Some single-row bearings are specifically designed for duplex mounting in sets for maximum performance.
Fafnir® Single Row Ball Bearings
Unit of Measure
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Part Number

Rows per Set

d - Bore

D - Outer Diameter

Bearing Width

Total Width

Contact Angle

C0 - Static Radial Rating (per row)

Ce - Dynamic Radial Rating (per row)

Ball Type

CAD

MM40BS90 TUM N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 TUM N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 2.3622 in60 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 TUM N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 2.7165 in69 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90 QUM N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 QUM N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 3.1496 in80 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 QUM N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 3.622 in92 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90 SUL N/A Single N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 SUL N/A Single N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 0.7874 in20 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 SUL N/A Single N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 0.9055 in23 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90 DUL N/A Duplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 DUL N/A Duplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 1.5748 in40 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 DUL N/A Duplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 1.811 in46 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90 TUL N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 TUL N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 2.3622 in60 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 TUL N/A Triplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 2.7165 in69 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90 QUL N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-20 QUL N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.7874 in20 mm N/A 3.1496 in80 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS90-23 QUL N/A Quadruplex N/A 40 mm N/A 3.5433 in90 mm N/A 0.9055 in23 mm N/A 3.622 in92 mm N/A 60 º N/A 13700 lbf60900 N N/A 9310 lbf41400 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 SUH N/A Single N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 0.8858 in22.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 DUH N/A Duplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 1.7716 in45 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 TUH N/A Triplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 2.6574 in67.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 QUH N/A Quadruplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 3.5432 in90 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 SUM N/A Single N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 0.8858 in22.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 DUM N/A Duplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 1.7716 in45 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 TUM N/A Triplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 2.6574 in67.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 QUM N/A Quadruplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 3.5432 in90 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 SUL N/A Single N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 0.8858 in22.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 DUL N/A Duplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 1.7716 in45 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 TUL N/A Triplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 2.6574 in67.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM40BS100 QUL N/A Quadruplex N/A 40 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 3.5432 in90 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 SUH N/A Single N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 DUH N/A Duplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 TUH N/A Triplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 QUH N/A Quadruplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 SUM N/A Single N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 DUM N/A Duplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 TUM N/A Triplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 QUM N/A Quadruplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 SUL N/A Single N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 0.5906 in15 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 DUL N/A Duplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.1812 in30 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 TUL N/A Triplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 1.7718 in45 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS75 QUL N/A Quadruplex N/A 45 mm N/A 2.9528 in75 mm N/A 0.5906 in15 mm N/A 2.3624 in60 mm N/A 60 º N/A 11400 lbf50700 N N/A 8660 lbf38500 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 SUH N/A Single N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 0.8858 in22.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 DUH N/A Duplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 1.7716 in45 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 TUH N/A Triplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 2.6574 in67.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 QUH N/A Quadruplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 3.5432 in90 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 SUM N/A Single N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 0.8858 in22.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 DUM N/A Duplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 1.7716 in45 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 TUM N/A Triplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 2.6574 in67.5 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
MM45BS100 QUM N/A Quadruplex N/A 45 mm N/A 3.937 in100 mm N/A 0.8858 in22.5 mm N/A 3.5432 in90 mm N/A 60 º N/A 21000 lbf93400 N N/A 16010 lbf71200 N N/A STEEL N/A CAD Icon (for items table)
Unit of Measure
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