Ball Screw Assemblies suit small footprint applications.

Press Release Summary:

Offering load capacities from 40-100 lb, Small Diameter Metric Ball Screw Assemblies range in diameter from 6-12 mm with standard leads from 1-3 mm. Standard Rolled models offer lead accuracy of ±100 µm/300 mm, while Precision Rolled models provide ±25 µm/300 mm lead accuracy. Available in alloy, stainless, aluminum, titanium, and other exotic metals, assemblies are suited for robots, medical equipment, guided missiles, unmanned vehicles, and aerospace applications.

Original Press Release:

Small Diameter Delivers Big Performance: Nook Industries Small Diameter Metric Ball Screw Assemblies Designed for Compact / Precision Applications

Cleveland, OH-March 2009

Nook Industries (Cleveland, OH) has responded to the growing worldwide shift toward smaller packaged applications, by introducing its Small Diameter Ball Screw Assemblies (SD Ball Screw) designed for smaller footprint applications. These screws are used in robots, medical equipment, guided missiles, unmanned vehicles and aerospace applications. Nook's Precision Screw Group developed the small diameter ball screw line as an extension to its Power-Trac(TM) offering to provide design engineers a globally accepted metric product for compact, portable, and lightweight applications requiring high accuracy, repeatability, and durability.

Ball screws offer an efficient means of converting rotary motion to linear motion, smaller package applications typically require lower load capacity and higher precision. With over four decades of experience manufacturing precision ball screws, Nook's Precision Screw Group designed the small diameter (below 10mm) ball screws with a load capacity of 40-100lbs., and a high-precision (lead accuracy measured in microns ; 10ths of 1,000s of inches).

  • Lead accuracy of: ± 100µm/300mm - Standard Rolled (Carry, MRT) / ± 25µm/300mm - Precision Rolled (PMT)

  • Standard diameters from 6mm to 12mm

  • Standard leads from 1mm to 3mm

    According to Nook Industries Vice President of the Precision Screw Group James Lincoln, "The SD Ball Screw's small size and customizable design offers precise efficient movement in a compact package for applications."


    Nook's SD Ball Screw's basic configuration assembly is typically powered by a motor which generates torque as the rotating screw pushes the nut along the screw shaft; producing linear thrust. They are often used alongside linear slides or as part of a linear actuator to move parts and devices along a single axis.

    A wide range of materials including alloy, stainless, aluminum, titanium, and other exotic metals are available to match customer's application performance requirements; i.e.-stainless steel for medical or non-magnetic, non-corrosive applications.

    NOOK INDUSTRIES, INC. 4950 EAST 49th Street Cleveland, Ohio 44125-1016 (216) 271-7900 | (800) 321-7800


    Nook's SD Ball Screw standard line is offered in two versions for application-specific need:

    Keyed Version: V-Thread Version:

    Designed in metric dimensions to meet universal industry performance standards, Nook catalogs SD Ball Screw sizes from 6mm diameter to 12mm. Additionally, the size required will be determined by the neeed load capacity, speed, duty cycle, and environmental conditions (dust, metal particles, silicate, etc.) specified by the customer.

    While the SD Ball Screw's are offered as modified standard parts, Nook can customize these standard designs to meet the unique material, end machining, and application specifications. Nook also implements a rolled manufacturing process; which is more cost efficient vs. cutting or grinding.

    Available in a wide assortment of diameters and lead accuracies, quantities are currently being sold from single units to tens of thousands per year. The Power Trac(TM) SD Ball Screw series are currently in use by many major medical, military and robotics entities.

    A comprehensive Specification Data Sheet for Nook's Small Diameter Metric Ball Screw Assemblies is available for download at:


    For over 40 years, Nook Industries, Inc. has been a leading manufacturer of linear motion components and linear control systems used in a multitude of applications requiring precise, controlled movement. Manufacturing one of the most comprehensive selections of integrated linear motion components in the world, Nook's progressive growth has been achieved through its commitment to quality; emphasizing continuous improvement, defect prevention, and the use of statistical methods and consistent training to ensure the quality of its products.

    Headquartered in Cleveland, Ohio, Nook Industries is an ISO 9001-2000 Registered Company that provides controlled motion solutions in a wide range of industries including; transportation, medical/diagnostics, paper, chemical, food/beverage, solar/aerospace, entertainment and communications markets. Clients in these markets rely on the company's products for tooling, product design and engineering flexibility to provide modified standard products to meet their respective application requirements.

    Whether the application requires an off-the-shelf linear motion component or an engineered solution tailored to fit your application - Nook provides comprehensive engineering, design and analysis in providing the highest quality linear motion manufacturing solutions on the market today.

    For more detailed information, visit the Nook web site at: or call: 1-800-321-7800

    ©2009 Nook Industries.

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