Precision Linear Actuator
140Pages

In 1969, Joseph H. Nook Jr. founded Nook Industries, Inc., intent on becoming a global supplier of Linear Motion products. Ball screws, both rolled and ground, were the cornerstone products in the early 1970’s, putting Nook Industries on the map as a successful business and a trusted company. Through the years, Nook Industries has served as a leading manufacturer of engineered products. From the first ball screws to the latest technologies, Nook Industries strives to provide customers with high quality products and engineered solutions. Companies around the world depend on the quality...

Pairing traditional and proven design with the latest technology, Nook Industries manufactures products that customers value. The expansion of product lines and the development of application specific components and engineered systems have propelled Nook Industries to the forefront of the industry. Nook Industries is committed to customer satisfaction and providing high-quality, high-value products that are delivered on time at a competitive price.

QUALITY HISTORY Since 1969, Nook Industries, Inc. has relentlessly and continuously developed the capabilities and skills to deliver products of the highest quality. Knowledge of testing and design, coupled with this experience working with stringent customer requirements in aerospace, medical, energy and military applications has provided the background to be a reliable partner. INSPECTION CAPABILITY Laser Lead Measurement - Precise lead error gauging is utilized to validate processes to conform to Nook internal specifications and customer requirements. HIGH TECH QUALITY EXPERIENCE When...

NOOK QUALITY EVOLUTION DEVELOPED MANUFACTURING SYSTEMS QUALITY TOOLS: • • • • • • • • Design for Six Sigma manufacturing D.O.E. (Design of Experiments) APQP (Advanced Product Quality Planning) DFMEA, PFEMA FEA (Finite Element Analysis) DVP&R (Design Verification Plan & Report) Reliability Testing Process validation to 21 CFR Part 82 (Medical Device) QUALITY SYSTEMS AND ACCREDITATIONS SUPPLY CHAIN APPROVAL PROCESS STATE OF THE ART MANAGEMENT SYSTEMS TESTING Efficiency Measurement - Nook Engineering has designed test machines to measure and validate screw assembly efficiency. APQP LAUNCH...

SELECTING AN ACTUATOR ELECTRIC CYLINDERS • Heavy Duty Harsh Environments Square Extrusion Tube Structure Servo or Stepper option CC™ Cylinder & COMMERCIAL SERIES • High Value Small Package Feedback Options Flexible Mounting Options Nook Linear Actuators are used in many light rail applications. NOOK PRECISION ACTUATORS

TECHNICAL INTRODUCTION PRECISION ACTUATORS Nook Industries Linear Actuators use the finest acme and ball screws manufactured in the world. ACME SCREWS Nook Industries manufactures PowerAc™ precision acme screws by thread rolling for Electric Cylinders, Series 500, and Commercial Series Actuators - a process that produces high-precision screws. Nook Acme Screw products feature centralizing thread forms for smooth, no-wedging performance. PowerAc™ Acme screws are made form 4140 Alloy steel with a black oxide finish with a 2C (Centralizing) thread form. Nook acme nut material has been selected...

Nook Electric Cylinders are widely used in the satellite dish industry. NOOK PRECISION ACTUATORS

ELECTRIC CYLINDERS ELECTRIC CYLINDERS nookindustries.com The specifications and data in this publication are believed to be accurate and reliable. However, it is the responsibility of the product user to determine the suitability of Nook Industries products for a specific application. While defective products will be replaced without charge if promptly returned, no liability is assumed beyond such replacement.

ELECTRIC CYLINDERS Electric Cylinders are ruggedly designed and produced in standard models with thrust capacities from 500 lbs. to 40,000 lbs. Electric Cylinders are intended for use in industrial environments and feature precision-ground hard chrome-plated actuator tubes with industrial enamel paint on exterior surfaces. Epoxy paint is available on request. Electric Cylinders can be supplied for outdoor applications. These cylinders may be used individually or in multiple arrangements. Each Electric Cylinder is built to specification. ILA ELECTRIC CYLINDER ILA In-Line Electric Cylinders...

ELECTRIC CYLINDERS PRECISION ACTUATORS In operation, the drive sleeve rotates the lift shaft causing the actuator tube to extend and retract from the housing tube. Actuator tube must be secured to prevent rotation. Special keyed actuator tubes are available. ELECTRIC CYLINDERS For use in multiple cylinder arrangements, DD Electric Cylinders can be supplied without motor mounts. DD Electric Cylinders are available in Acme Screw or Ball Screw versions and have a variety of worm gear ratios resulting in a wide range of speeds and thrust capacities. RAD WORM GEAR ELECTRIC CYLINDERS RAD worm...

DEFINITIONS & TERMS BACKLASH Backlash (lash) is the relative axial movement between a screw and nut without rotation of the screw or nut. Backlash in cylinders occurs wherever reversible load conditions exist. Backlash is less than .015” for all but the largest cylinder models. Ball Screw Cylinders can be factory adjusted to reduce backlash at the lift shaft by selecting bearing ball size in the ball nut. This selective fit technique can be used to achieve a minimal lash between the ball nut and ball screw of .003” to .005” Precision ball screws with preloaded nuts can be . supplied when...

ELECTRIC CYLINDERS PRECISION ACTUATORS ELECTRIC CYLINDERS Self-locking occurs when system efficiencies are low enough that the force on the actuator lifting tube cannot cause the drive system to reverse direction. Electric Cylinders that utilize acme screws and have ratios of 20:1 or greater are self-locking and, in the absence of vibration, will hold loads without backdriving. All other models require a motor brake to prevent backdriving. Holding torque is the amount of input torque required to restrain the load once stopped. The standard brake torque shown in the product specification...