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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  • Body - Low carbon steel, protective coated for corrosion resistance.
  • Ball - Alloy steel, heat treated, hard chrome plated.
  • Stud - Low carbon steel, protective coated for corrosion resistance.Right hand threads are standard.
  • Grease Fitting available for sizes -6 and up. Units are supplied without grease fittings. When a grease fitting is required, specify by adding suffix "Z" or "F". Ex.: CM-6SZ = Zerk Type Fitting CM-6SF = Flush Type Fitting.
  • Optional grease fitting is supplied, standard, in right hand location as illustrated (with stud facing you). Specify if left hand location is desired.
CM-S & CB-S Image
Unit of Measure
1 

Item #

Thread Type

W - Ball Width

A - Base to Center

D - Head Diameter

L - Center to End of Stud

M - Stud Thread Length

Thread Size

a - Misalignment Angle Total

Ultimate Radial Static Load Capacity

CM-3S N/A Right Hand N/A .312 in N/A 1.250 in N/A .625 in N/A 1.000 in N/A .437 in N/A 10-32 N/A 45 º N/A 240 lbs
CB-3S N/A Left Hand N/A .312 in N/A 1.250 in N/A .625 in N/A 1.000 in N/A .437 in N/A 10-32 N/A 45 º N/A 240 lbs
CM-4S N/A Right Hand N/A .375 in N/A 1.562 in N/A .750 in N/A 1.031 in N/A .500 in N/A 1/4-28 N/A 43 º N/A 442 lbs
CB-4S N/A Left Hand N/A .375 in N/A 1.562 in N/A .750 in N/A 1.031 in N/A .500 in N/A 1/4-28 N/A 43 º N/A 442 lbs
CM-5S N/A Right Hand N/A .437 in N/A 1.875 in N/A .875 in N/A 1.219 in N/A .593 in N/A 5/16-24 N/A 46 º N/A 715 lbs
CB-5S N/A Left Hand N/A .437 in N/A 1.875 in N/A .875 in N/A 1.219 in N/A .593 in N/A 5/16-24 N/A 46 º N/A 715 lbs
CM-6S N/A Right Hand N/A .500 in N/A 1.938 in N/A 1.000 in N/A 1.562 in N/A .812 in N/A 3/8-24 N/A 45 º N/A 1,014 lbs
CB-6S N/A Left Hand N/A .500 in N/A 1.938 in N/A 1.000 in N/A 1.562 in N/A .812 in N/A 3/8-24 N/A 45 º N/A 1,014 lbs
CM-7S N/A Right Hand N/A .562 in N/A 2.125 in N/A 1.125 in N/A 1.750 in N/A .937 in N/A 7/16-20 N/A 44 º N/A 1,269 lbs
CB-7S N/A Left Hand N/A .562 in N/A 2.125 in N/A 1.125 in N/A 1.750 in N/A .937 in N/A 7/16-20 N/A 44 º N/A 1,269 lbs
CM-8S N/A Right Hand N/A .625 in N/A 2.438 in N/A 1.312 in N/A 2.000 in N/A 1.000 in N/A 1/2-20 N/A 48 º N/A 1,668 lbs
CB-8S N/A Left Hand N/A .625 in N/A 2.438 in N/A 1.312 in N/A 2.000 in N/A 1.000 in N/A 1/2-20 N/A 48 º N/A 1,668 lbs
CM-10S N/A Right Hand N/A .750 in N/A 2.625 in N/A 1.500 in N/A 2.500 in N/A 1.375 in N/A 5/8-18 N/A 54 º N/A 1,943 lbs
CB-10S N/A Left Hand N/A .750 in N/A 2.625 in N/A 1.500 in N/A 2.500 in N/A 1.375 in N/A 5/8-18 N/A 54 º N/A 1,943 lbs
CM-12S N/A Right Hand N/A .875 in N/A 2.875 in N/A 1.750 in N/A 3.000 in N/A 1.625 in N/A 3/4-16 N/A 50 º N/A 2,841 lbs
CB-12S N/A Left Hand N/A .875 in N/A 2.875 in N/A 1.750 in N/A 3.000 in N/A 1.625 in N/A 3/4-16 N/A 50 º N/A 2,841 lbs
Unit of Measure
1