Live and Dead Centers - Discount-Tools.com

TECHNICAL INFORMATIONLIVE CENTERSThe “12” and “34” Series Super Accurate designs are ideallysuited for low RPM grinding and lathe applications. Thisdesign, unique to Riten Industries, is capable of accuraciesunder 100 millionths. These centers need at least five poundsof thrust pressure applied to seat the bearings. Super Accuratecenters are intended for use in applications where thrust pressuresare nominal and RPM's are less than 1,000.The “14”, “15”, “16” Series high-speed live centers are designedfor CNC lathes and increasingly heavy part weights. Coolantdeflectors extend the life of these accurate high-speed centers.Riten “44”, “48”, “51”, “34” Heavy-Duty and “55” Extra Heavy-Duty Series live centers are designed for both lathes andgrinders. Triple row bearing designs provide robust performancewhile the “51” Advantage, “34” Heavy-Duty and “55”extra heavy-duty Series have full length spindles and biggerbearings for heavier loads.Our “46”, “49”, “65” and “56” Series are specialty centers. The“46” Series is designed for spline rolling applications. The “49”series has interchangeable points and can be used in CNCapplications where weights and RPM's are within the factorylimits of the center. The “65” Series pipe nose center isdesigned to run thin wall pipe and tubing at a wide range ofRPM's. The “56” Heavy-Duty Series bull nose center also runspipe, and very heavy parts such as rolls, castings and otherpieces with large center holes. The heavy-duty bull nose hasheavier bearings and greater rigidity than a pipe nose center.New items in this catalog include the following: The “40” Serieslight and X-light live centers for workpieces from 2 oz. to 10 lbs.,the versatile “60” Series multi-use live centers, the “17” SeriesConcentric spring loaded and bell head live centers, and the“61” Series mill taper dead centers for Cincinnati machines.SPECIALSPart Numbers: Riten specials are all stamped with a uniquepart number which aids in identifying the center. For example,a 46103-A0097 is a standard 46103 spline rolling live centerwith a custom spindle.In general, you can find basic information about a special byreferring to its base part number in the catalog. For instance,the taper, bearing configuration, and some tool clearances forthe 46103-A0097 are the same as the standard 46103.ALL CENTERSOrdering: To order a special, complete the diagram on page37 or 38 that best describes the center you need or send a print.If you are already using a Riten standard that is similar to whatyou want, include that information as well. This information willhelp us select the bearing configuration best suited for yourapplication. If you don't know which live center is the correctchoice, be sure to include the RPM, workpiece weight, tailstockthrust and any other application data that will help usassist you in selecting the right center.Point Angles: To assure proper engagement of the workpiece,Riten standard live and dead center points have a 60degree, 15 minute included angle.Materials: Riten uses the finest bearing quality steel to manufactureits centers and components. Riten live and dead centerbodies and spindles are heat-treated. This insures hardnessand wear-resistant properties needed for center points. Thisalso allows for many regrindings, extending the center’s life.Bearing Life: When radial loads, axial loads and RPM aregiven for an application, the life hours of the live center can beaccurately calculated. Using a live center with more capacitythan needed is a safeguard against bearing failures due tooverload and variances of application. Weights are based on100 RPMs on 2,000 hours, using L10 life factor. If you areuncertain about an application or suspect that your workpieceweight or tailstock pressure will exceed the live center’s capabilities,call Riten for technical support.RITEN TECHNICAL SUPPORTPlease call our technical support department ifyou are not sure of the best center for yourapplication. Our customer service personnel willbe happy to help you select the correct centerto fit your needs.1-800-338-0027Or look us up on our Web site:http://www.riten.com39Call: 1-800-338-0027