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GENERAL INFORMATIONENGINEERING Cam Followers Stud & Yoke Type

SMITH Cam Followers are anti-friction needleroller bearings developed for use in cam ortrack roller applications. They were specificallydesigned and built to handle intermittentshock and heavy loads. Full compliment (non-caged) needle bearings maximize the radialload carrying capability while the soft inner core of the stud gives these cam followers theability to absorb extreme shock loads withoutfracturing.In addition to standard models, specialbearings are manufactured to customerspecification for unique applications.It is often found that the use of specialbearings reduces machine costs and improves performance. We have the ability to economically manufacture custombearings in small or large volumes. Please call us to discuss your special applications.

Construction of Standard Needle Rollers

Cam Follower materials and finishes are selected to provide a minimum of friction and to assure dependable performance for the required service life. OUTER RACE High-carbon chrome bearing steel (SAE 52100), hardened and ground. 1) NEEDLE ROLLERS : Tremendous strength and forgiveness when subject totensile, shear, and other bending stresses and INNER RACES are manufactured from low-carbon alloy steel, carburized, and case hardened on the raceway area. This gives the inner race two very key characteristics. are made from high-carbon chromebearing steel. They are through-hardened, ground and lapped for ultimate life and performance. 2) : extremehardness on the wear area for long bearing life. The studs are metallurgically designed not to fracture or fail when subject to intermittent shock and heavy loads found in cam follower applications. RETAINING WASHERS are made from low-carbon alloy steel,and case-hardened. This gives both a hardened and smooth internal surface that is desirable for proper cam follower performance. The soft core of the end washer resists fractureduring use.

Material Selection

The common material selection for needleroller bearings are high-strength bearing steel(SAE 52100) or carburized low-carbon alloysteels. These materials give us an excellentcombination of strength and economy and are more than sufficient for the majority ofindustrial applications.

Various Needle Rollers - Stud & Yoke Type

REGULAR STUD TYPE CR SeriesHR SeriesYR SeriesAdd Suffix “B” are recommended where loads and shock are moderate. Bearing capacity onthe CR Series is limited by their moderatelysized stud. See capacity ratings.
High-Temperature & Corrosive Applications: HEAVY STUD TYPE In extreme applications where bearings arebeing subjected to high-temperature orcorrosive environments, alternative materialsor special platings must be considered. are recommended for applications with high-loads and/or heavy shock and wheredeflection should be held to a minimum.Rollers and outer races are identical to the standard CR Series. YOKE TYPE have similar internal construction to the stud type CR Series except the inner race is madefor shaft or clevis mounting. Generally,heavier loads can be supported by the yoke mounting arrangement, since stud deflection is removed from consideration. Smith Bearing
® manufactures needle rollerbearings in a wide variety of high-temperatureand corrosive resistant exotic alloys including HEX-DRIVE SOCKET are favorable for most applications where the bearing is installed in a blind orthreaded hole. The Hex-drive allows for more secure installation and easier removal of the cam follower. 440-Cstainless steel and M-50, M-2, M-10 tool steels SCREWDRIVER SLOT . Screw-driver slot configuration is normally sufficient for most applications. Corrosion resistant plating is effective when usingbearings in corrosive environments. Non-bearing surfaces such as inner races and end washersare cadmium plated to resist corrosion. Theouter races of the bearings are typically hard-chrome plated to resist wear as well as corrosion. Standard

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