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

RACK AND PINIONROTARY ACTUATORSIn comparison with other rotaryactuators, Tol-O-Matic’s rack andpinion rotary actuator has one of thehighest torque per weight ratios andfeatures a light-weight, compactpackage. Available in 3/4", 1" and1-1/4" bore sizes with rotation optionsof 0° to 180° and 0° to 360°, theseactuators fill a wide variety ofapplication requirements.Its low-profile, single rack designgives it a big advantage over bulkierdouble rack models and its anodizedBALL BEARING REDUCES FRICTIONAND PROVIDES SUPPORT AGAINSTSIDE LOADING OF PINION AND SHAFTextruded aluminum housing makes itdurable and light-weight.Sintered bronze guide block eliminatesbacklash by preloading the rack into thepinion throughout the stroke. Ballbearings reduce friction for maximumefficiency, rigidity and support to pinionshaft and allow the actuator shaft towithstand substantial side loads.Adjustable stops with nylon bumpersoffer stroke adjustment and shockabsorption on low-inertia applications.Shock absorbers can be mounted inplace of the adjustable stops todecelerate and limit travel in highEXTRUDED, LIGHT-WEIGHT,ANODIZED ALUMINUM HOUSINGSinertia applications. Optionaladjustable cushions can be utilized forend of travel deceleration. Additionaloptions include Hall-effect sinking orsourcing sensors for signalingposition.All Tol-O-Matic rack and pinionrotary actuators are prelubricated,easily field repairable and are rated for10,000,000 cycles under normaloperating conditions.PRETAPPED MOUNTING HOLESON BACKSIDE OF HOUSINGADJUSTABLE STOPS WITHNYLON BUMPERS FOR LOWINERTIA APPLICATIONSAdjustable sinteredbronze guide blockeliminates backlashthroughout stroke.SINGLE RACK AND PINION DESIGNFOR COMPACT, LOW-PROFILEAcetal piston design floatsindependent of rack.19