grippers & rack and pinion rotary actuators - Industrial and Bearing ...

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RACK AND PINIONROTARY ACTUATORSSELECTIONTo select a rack and pinion rotaryactuator, the following applicationdata is required:• Torque required to rotate the load.• Degree of rotation.• Pressure available (PSI).• Radial and/or thrust loads.Refer to the performance charts onpage 21 to determine the followingselection specifications.1.DETERMINE TORQUEOUTPUT AT AVAILABLEPRESSURERefer to the Torque vs Pressure chartand choose a rotary actuator based on itstorque output at the available operatingpressure that will rotate the load.2.DETERMINE ACTUATORSBEARING LOADCAPACITYConsult the Bearing Load Capacitychart. Bearing loads must not exceedthe values shown for radial and/orthrust loading.3.CALCULATE KINETICENERGY IF APPLICABLEKinetic energy comes into play if theactuator will decelerate the load. Inthese applications, both torque output torotate the load and kinetic energyabsorption to stop the load must beconsidered to correctly size a rotaryactuator.Once the KE value per stop has beencalculated, refer to the Rotary ActuatorKinetic Energy Rating chart anddetermine if standard adjustable stopswith bumpers are adequate or if optionalcushions or shock absorbers will berequired.How to calculate kinetic energy isshown below.KINETIC ENERGY CALCULATION1 2KE = Jmω2angle traveled (deg.)ω = 0.035 ×rotation time (sec.)whereKE = Kinetic Energy per stop ( in. −lbs.)Jm= Rotational mass moment of2inertia ( in. −lbs−sec. )ω = Peak Velocity ( rad. / sec.)( assuming twice averagevelocity)W = Weight of load ( lbs.)g = Gravitational cons tant=2386. 4 in. / sec.k = Radius of gyration ( in.)MOMENTS OF INERTIA EXAMPLESSLENDER ROD MOUNTEDOFF CENTERTHIN DISK MOUNTED ON CENTERTHIN RECTANGULAR PLATEMOUNTED OFF CENTERabkabcW 1W 2POINT LOAD2W kJ = mg× 2W 1W 222W1a W2bJm = × + ×g 3 g 32 2W W14a + c W24b+ cJm = × + ×g 12 g 12kWJm = × k2g2 220
RACK AND PINIONROTARY ACTUATORSSPECIFICATIONSRack and pinion rotary actuators are available in three bore sizesof 3/4", 1" and 1-1/4" with 0° to 180° or 0° to 360° rotations.OPTIONS:• dc Hall-effect Sinking or Sourcing Switches• Cushions• Shock Absorbers• VITON SealsOVERALL SPECIFICATIONSSPECIFICATIONMODEL NUMBERRA075 RA100 RA125Bore Diameter (in.) .750 1.000 1.250Degree of Rotation 180 / 360 180 / 360 180 / 360Base Weight (lbs.) w/180° rotation .60 .78 1.35Base Weight (lbs.) w/360° rotation .71 1.02 1.81Shaft Style: Single Single SingleTheoretical Torque Specs .072 in. lb. / psi .196 in. lb. / psi .409 in. lb. / psiMaximum Operating Pressure: 150 PSI 150 PSI 150 PSIMaximum Breakaway Pressure: 10 PSI 7 PSI 5 PSIEffective cushion range: 30° 30° 30°Standard Rotations: 180°, 360° fully adjustable 180°, 360° fully adjustable 180°, 360° fully adjustableOperating Temperature:* 0°F to 180°F (Buna-N seals) 0°F to 180°F (Buna-N seals) 0°F to 180°F (Buna-N seals)0°F to 240° F (Viton ® seals) 0°F to 240° F (Viton ® seals) 0°F to 240° F (Viton ® seals)Keyway Timing: 12 O’clock position at midstroke 12 O’clock position at midstroke 12 O’clock position at midstrokeHousing Material: Aluminum Aluminum AluminumShaft Material: Steel Steel SteelRack Material: Steel Steel SteelMaximum Angular Backlash 1.5° 1.0° 1.0°Rotational Tolerance +10° / -00° +7° / -00° +5° / -00°Volume/Degree of Rotation .0012 in. 3 .0055 in. 3 .0071 in. 3*180° F is the maximum operating temperature when using magnets. Therefore magnets should not be used with the VITON seal option.PERFORMANCE DATAModelBEARING LOAD CAPACITIESRadial Thrust Bearing Spread(lbs.) (lbs.) (in.)RA075 105 26 .68RA100 235 59 .84RA125 360 90 1.06THRUST LOADRADIAL LOADDISTANCE BETWEEN BEARINGSIN./LBS302010020TORQUE VS PRESSURE(actual)4060PSI1 1/4" Bore801" Bore3/4" Bore100KINETIC ENERGY RATINGSKinetic Energy Absorption (in.-lbs.)/StopADJUSTABLE STOPSModel KE/StopRA075 .14RA100 .26RA125 .26CUSHIONSModel KE/StopRA075 .50RA100 .92RA125 1.84SHOCK ABSORBERSModel KE/Stop Max. Cycles/Hr.RA075 1.00 3896RA100 3.00 5195RA125 4.00 391121
Page 1 and 2: TOL-O-MATIC, INC.GRIPPERS &RACK AND
Page 3 and 4: TOTAL AUTOMATIONWITH TOL-O-MATICACT
Page 5 and 6: Drive-From-Behind RotoGripper Combi
Page 7 and 8: GRIPPER SELECTIONGrippers are used
Page 9 and 10: ANGULAR GRIPPERPERFORMANCE DATA2.0G
Page 11 and 12: ANGULAR GRIPPERSDIMENSIONSVVHWWTRAV
Page 13 and 14: M TAPPEDHOLE (2)S TAPPEDHOLETHRU (4
Page 15 and 16: PARALLEL GRIPPERSSPECIFICATIONSTol-
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Page 19 and 20: PARALLEL GRIPPERSHWWAAAYYCCCBBBTRAV
Page 21: RACK AND PINIONROTARY ACTUATORSIn c
Page 25 and 26: RACK AND PINIONROTARY ACTUATORSOPTI
Page 27 and 28: ROTOGRIPPERCOMBINATIONSSELECTIONTo
Page 29 and 30: DRIVE-FROM-BEHINDANGULAR GRIPPER WI
Page 31 and 32: DRIVE-FROM-BEHINDPARALLEL GRIPPERTH
Page 33 and 34: SWITCHESAvailable for use on all Gr
Page 35 and 36: THREAD FFFESYM. CMOUNTING LEND WITH
Page 37 and 38: DRIVE-FROM-BEHIND COMBINATIONSABCH-
Page 39 and 40: CONFIGURATOR EXAMPLEORDERINGROTARY
Page 41 and 42: RAOPTIONS8.K U 1GRIPPERMODEL9. 10.G
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