Parts Sheet - Tolomatic

10 – Roller Screw Lubrication RSA32/RSM32Parts Sheet #3600-4104_16_RSA32psRoller Screw LubricationNOTE! Before starting any maintenance activities, makesure that the supply power is shut OFF.! CAUTION: DO NOT FILL WITH GREASE!RSA/RSM actuators have been lubricated at the factoryand are ready for installation. For many applications theactuator is greased for life.• For light to moderate use, no additionallubrication is required.Overfilling will cause a reduction in performance, excessiveheat build up and potential premature failure.All curves represent properly lubricated and maintainedactuators.Roller Screw• For optimal performance and rated life, periodicre-lubrication is required. Select the BasicLubrication Interval (t BL ) based on the cycles RMSVelocity (V RMS ). Use either the formula or the graphbelow.t BL = 4500 x (V RMS ) -1.57 (hours)Lubrication Interval (hrs)100,00010,0001,0001000 1 2 3 4 5 6 7 8Cycle RMS Velocity (in/sec)1Roller Screw Lubrication Interval Graph• Determine the Thrust Correction Factor (K T )based on the ratio of the Actuator Peak ThrustRating (T PEAK ) to the Maximum Cycle Thrust (T MAX ).Important NOTE:K T can not be greater than 1.TK T = K Co (PEAK) - 0.15T MAX24RN05 32RN05K Co 0.24 0.26• The Lubrication Interval (t L ) for a givencycle is then calculated as:t L = t BL x K T (hours)• Re-lubricate with Tolomatic Grease #2744-1021Quantity: RSA24/RSM24 Approximately 0.1 oz. (3 g);RSA32/RSM32: Approximately 0.2 oz. (6 g) throughgrease zerk.WARNING!There is a possibility that base oil may leak from theGrease Zerk (#2). In contamination sensitive applicationsreplace Grease Zerk (#2) with a leak-proof Grease FittingPlug (#4), or add a leak-resistant Grease Zerk Cap (#5) tocover Grease Zerk (#2).523 4Item Part No. DescriptionWhere:t BL = Basic Lubrication Interval (hours)V RMS = RMS Velocity (in/sec)K T = Thrust Correction FactorK Co = Screw Static Load FactorT PEAK = Actuator Peak Thrust RatingT MAX =Maximum Cycle Thrustt L = Lubrication Interval (hours)2. 0100-1601 Zerk, Fitting, 1/4-283. 2309-1055 Set Screw, 1/4-28 (Flush zerk replacement)4. 2744-1214 Grease Fitting Plug, 1/4-28 (leak-proof)5. 2744-1213 Grease Zerk Cap (leak-resistant)Tolomatic • URL: http://www.tolomatic.com • Email: help@tolomatic.com • Fax: (763) 478-8080 • Toll Free: 1-800-328-2174