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Lead Screws and Lead Screw Assemblies
Lead Screws and Lead Screw Assemblies
Reliance provides a wide range of leadscrew and nut assemblies designed for precise linear motion. These assemblies are available in various sizes and styles, with options for custom designs. The leadscrews are manufactured using a rolled process for consistency and cost-effectiveness, available in materials like stainless steel, aluminum, and titanium, suitable for diverse applications including medical and cleanroom environments.
Leadscrews are available in diameters from 3 mm to 19 mm, with thread lengths up to 4 meters. They are designed for high linear speed applications and feature a thread form for long life and quiet operation. Coatings such as TFE and BFE enhance lubrication and durability.
The document outlines 11 different nut styles, including anti-backlash designs for precise positioning and self-lubricating options for extended life. Nuts can be customized with features like bushings and gears integrated into the design, reducing part count and assembly time.
A detailed selection guide lists dynamic load capacities and static friction drag torques for various nut series and screw diameters, aiding in choosing the appropriate assembly based on application requirements.
Technical details include material options, coating benefits, and part number structures. The document emphasizes selecting the right materials and coatings to optimize performance and longevity in specific environments.
Reliance's leadscrew and nut assemblies offer versatile solutions for linear motion needs, focusing on customization and precision. The document provides comprehensive information to assist in selecting the right components for various industrial applications.
Reliance offers a range of leadscrew and nut assemblies, including custom machining options and integrated systems like the Leadscrew Linear Slides and ScrewRail™ assemblies. These products simplify the design and manufacture of motion systems by integrating components such as bearings, carriages, and housings.
The document provides detailed specifications for leadscrew end machining, including dimensions, tolerances, and recommended practices. General tolerances are ±0.13 mm, with specific tolerances for features such as cross holes, bored holes, and keyways.
Custom leadscrew end machining is available, with specific requirements for drawing details and tolerances. The document emphasizes including the leadscrew nut in the assembly to ensure proper fit and function.
The leadscrew linear slide offers reliable linear speed and accurate positioning, with a compact profile for torsional stiffness. It supports loads up to 46 kg and provides linear actuation with 0.0006 mm/mm lead accuracy, suitable for laboratory and industrial automation applications.
The ScrewRail™ combines drive and support functions in a single component, reducing space and cost. It features a precision rolled leadscrew within a concentric steel guide rail, with self-lubricating materials for long life. The ScrewRail™ can handle loads from 5 kg to 45 kg and offers options for plain or anti-backlash nuts.
Reliance provides various product options, including special configurations and higher accuracy leadscrews. Technical support is available for custom solutions and modifications.
The document specifies dimensional tolerances of ±0.1, ±0.15, ±0.2, and ±0.3. The total travel is calculated as L - (L1 + L2 + E).
The document details the RSRZ5 and RSRZ6 series with a length tolerance of ±1 mm. Standard lengths are indicated with a symbol, and various lead measurements are provided for each series.
The document outlines performance metrics for different part numbers, including nominal rail and screw diameters, lead, maximum drag torque, life at ¼ design load, torque to move load, design load, screw inertia, and equivalent diameter.
Options include end support modifications, higher accuracy leadscrews, left-hand or left/right threads, alternative lengths up to 1200 mm, and custom orders. Technical support is available for product information, design support, and custom solutions.
For further inquiries, contact [email protected] or call +44 (0) 1484 601002.
Catalog excerpts
Leadscrews and Leadscrew Assemblies Section Contents
Open the catalog to page 3
Product Overview Precise, efficient linear motion Leadscrew & Nut Assemblies Reliance’s leadscrew and nut assemblies provide a flexible, integrated solution for linear motion. Available in a wide choice of leadscrew sizes and nut styles, with options for custom designed nuts and leadscrew end modifications, the range offers the flexibility to address a wide variety of requirements. Leadscrews are provided with leads from 0.3 mm to 92 mm, screw diameters from 3 mm to 19 mm and thread lengths of up to 4 metres, making them an effective solution, even for high linear speed applications. They are...
Open the catalog to page 4
Product Overview Part number structure Screw Diameter See pages 7-7 to 7-11 Thread Length Leadscrew Coatings Thread Direction Leave blank for no coating or TFE and BFE for coated Leave blank for standard right-hand or LH for left-hand, where available See pages 7-7 to 7-11 Leadscrew materials Leadscrews are rolled from a premium grade, corrosion resistant and non-magnetic 303 stainless steel. Other materials are available including 316 and 400 series stainless steel, precipitation hardened steels, aluminium and titanium. These materials are ideally suited for industries such as medical, vacuum,...
Open the catalog to page 5
Product Overview Leadscrew Nuts LPX series - Long life for applications that do not require anti-backlash or wear compensation. LNTG series - Adjustable drag, compact design, anti-backlash nut assembly allows drag torque to be pre-set according to system requirements. LAB series - Incorporates a lockable, adjustable sleeve to set the drag torque of the nut and to provide manual backlash control. LNTB MINI series - Miniature anti-backlash nut for applications requiring axial stiffness through life with minimal drag torque. LNTB series - Flexible design, self-compensating anti-backlash nut assembly...
Open the catalog to page 6
Leadscrew Nuts Reliance offers a wide variety of standard nut designs and the matrix below is intended as a general guide to help select the most appropriate nut for the application. More detailed technical data is provided on Comparative star rating: The nuts are available in several different designs including anti-backlash, adjustable anti-backlash, general purpose and miniature. Most nuts are available with a triangular, round or threaded mount. Custom requirements can be supported using specialist mould designs, see page 7-26 Modified and custom nuts All of the nuts can be modified to some...
Open the catalog to page 7
Leadscrew and Nut Assembly Selection Guide Product Overview Nominal Property Screw Diameter 3 mm Dynamic load LBF1 LPX2 LNTG LAB LNTB LAF LAK LWD LCM LAX Series Series Series Series Series Series Series Series Series 11 kg Static friction free 0.001 drag torque wheeling 0.004Nm Dynamic load Static friction free 0.001 drag torque wheeling 0.004Nm Dynamic load Static friction free 0.004 - 0.004 - 0.004 0.002Nm drag torque wheeling 0.014Nm 0.014Nm 0.014Nm Dynamic load Static friction free drag torque wheeling Dynamic load Static friction free drag torque wheeling Dynamic load Static friction free...
Open the catalog to page 8
Nominal Screw Diameter Outside Diameter Part Number Left Hand Available Leadscrew & Nut Assemblies * Listed efficiencies are theoretical values based on a TFE coated leadscrew ** Listed efficiencies for 2mm diameter leadscrews are theoretical values based on non-coated leadscrews Note: Thread lengths can be specified up to 4m, depending on diameter and lead. Contact us for product information, design support and custom solutions [email protected]
Open the catalog to page 9
Sizes Compatible Nut Styles Nominal Screw Diameter Part Number Outside Diameter Left Hand Available * Listed efficiencies are theoretical values based on a TFE coated leadscrew Note: Thread lengths can be specified up to 4 m, depending on diameter and lead. Contact us for product information, design support and custom solutions [email protected]
Open the catalog to page 10
Nominal Screw Diameter Part Number Outside Diameter Left Hand Available P * Listed efficiencies are theoretical values based on a TFE coated leadscrew Note: Thread lengths can be specified up to 4 m, depending on diameter and lead. Contact us for product information, design support and custom solutions [email protected]
Open the catalog to page 11
Sizes Compatible Nut Styles Leadscrew & Nut Assemblies LAF, LAB, LNTB, LAX, LPX, LWD Nominal Screw Diameter Part Number Outside Diameter Left Hand Available * Listed efficiencies are theoretical values based on a TFE coated leadscrew Note: Thread lengths can be specified up to 4 m, depending on diameter and lead. Contact us for product information, design support and custom solutions [email protected]
Open the catalog to page 12
Nominal Screw Diameter Part Number Outside Diameter Left Hand Available * Listed efficiencies are theoretical values based on a TFE coated leadscrew Note: Thread lengths can be specified up to 4m, depending on diameter and lead. Larger screw diameters available, visit www.reliance.co.uk/shop For leadscrew and nut ordering configurations - see page 7-3 For leadscrew end modifications - see pages 7-27 to 7-35 For product overview - see pages 7-2 to 7-6 For technical information - see pages T7-1 to T7-5 Contact us for product information, design support and custom solutions [email protected]
Open the catalog to page 13
Miniature Plain Nuts All dimensions in mm General tolerances ±0.5 mm Detailed tolerances: Please contact us Material: Polyacetal Associated Products Reli-a-Flex® couplings: page 8-6 Linear slides: page 9-1 Intelligent motors: page 2-2 Plain bearings: page 12-1 Part number selection table - LBB and LBF series, barrel and flange mount Nut Series Nominal Nut Nut Flange Flange Flange Slot Centres Dynamic Drag Screw Length Width Height Load Torque ØA# ØB C D E D1 F G kg Nm 2.0 5.5 8 --5.08 --4.5 2.0 5.5 8 11.9 2.0 5.5 1.80 9.00 4.5 Free 31 wheeling 4.0 10.2 13 19.1 3.2 10.2 3.05 15.24 11 52 2 LBF3...
Open the catalog to page 14
Plain Nuts - General Purpose All dimensions in mm General tolerances ±0.5 mm Detailed tolerances: Please contact us Material: Polyacetal Associated Products Reli-a-Flex® couplings: page 8-6 Linear slides: page 9-1 Intelligent motors: page 2-2 Plain bearings: page 12-1 Part number selection table - LPX series, flange mount Nut Series LPX6LPX8LPX10LPX11LPX13LPX16LPX19- Nut Flange Flange Length Width C ØD E 25.4 25.4 28.7 4.8 38 Free wheeling Screw sizes 22 and 24 mm available Part number selection table - LPXZ series, flange mount Nut Series Nut Flange Flange Length Width ØB C ØD E 12.7 25.4 25.4...
Open the catalog to page 15All Reliance Precision Limited catalogs and technical brochures
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