S-98940A401 1 1/2"-4 x 18" Precision Acme Lead Screws and Nuts
Precision Acme Lead Screws and Nuts
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Basic Information
Thread Parameters
Dimension Parameters
Lead Screw Specific Parameters
Load & Performance Parameters
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Key Features & Benefits at a Glance
- Exceptional positioning accuracy with ±0.009" per foot tolerance for reliable, repeatable motion control.
- Superior strength and durability from hardened 4140 Alloy Steel construction, capable of withstanding 125,000 psi tensile stress.
- Enhanced wear and corrosion resistance provided by the black-oxide surface treatment for extended service life in demanding environments.
- Consistent and predictable linear motion with a 0.25" travel distance per single revolution of the screw.
- Broad compatibility with standard ACME nuts due to the Class 2C thread fit, ensuring easy assembly and smooth operation.
- Robust performance under heavy loads supported by a Brinell hardness of 271, resisting deformation and wear.
- Compliance with environmental regulations as a RoHS 3 compliant component, suitable for global industrial markets.
Professional Applications & Engineering Value
This 1 1/2"-4 ACME lead screw is engineered to solve critical challenges in precision motion control systems. The Black-Oxide 4140 Alloy Steel material, combined with a hardened treatment, provides exceptional resistance to wear and fatigue, making it ideal for high-cycle applications like CNC machinery, automated positioning tables, and heavy-duty linear actuators. The fully threaded design with a right-hand thread and precise Class 2C thread fit ensures smooth, low-friction engagement with matching nuts, minimizing backlash and improving system accuracy. Its 18" length and consistent 0.25" travel per turn offer reliable linear displacement, essential for industrial automation where repeatability and durability are paramount.
Specification Summary & Compliance
This precision ACME lead screw adheres to standard ACME thread specifications with a Class 2C thread fit for consistent dimensional accuracy. It is manufactured from hardened 4140 Alloy Steel and features a black-oxide surface finish. The product is compliant with RoHS 3 (2015/863/EU) regulations, ensuring it meets environmental standards for hazardous substance restrictions.
