S-98940A751 1 1/4"-5 x 3 ft. Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Exceptional positioning accuracy with ±0.009" per foot tolerance for reliable, repeatable linear motion control.
• Superior strength and durability from hardened 4140 alloy steel, capable of withstanding heavy loads up to 125,000 psi tensile strength.
• Enhanced corrosion resistance and reduced maintenance with a protective black-oxide surface treatment.
• Optimized for reverse or counter-rotational motion applications with its left-hand Acme thread design.
• Consistent and predictable linear travel of 0.2 inches per revolution for precise speed and feed control.
• Robust wear resistance from a Brinell hardness of 271, ensuring a long service life in demanding environments.
• Guaranteed interchangeability and fit with Class 2C mated components, simplifying assembly and replacement.

Professional Applications & Engineering Value

This left-hand Acme lead screw is engineered to solve critical challenges in industrial automation and machinery. The hardened Black-Oxide 4140 alloy steel construction provides the necessary high tensile strength and wear resistance for applications involving heavy loads and continuous operation, such as in CNC machinery, precision presses, and material handling systems. The Class 2C thread fit and Acme thread type ensure smooth power transmission and reduced backlash, which is vital for maintaining positional accuracy in closed-loop control systems. Its left-hand thread direction is specifically valuable in assemblies requiring reverse motion or where multiple screws must be synchronized in opposite directions, preventing unintended loosening and enhancing operational safety.

Specification Summary & Compliance

This precision lead screw adheres to inch system measurements with a Class 2C thread fit for Acme threads, ensuring dimensional compatibility. It features a single start, fully threaded design with a travel distance of 0.2" per turn. The component is manufactured from hardened 4140 alloy steel and is RoHS 3 (2015/863/EU) Compliant, meeting stringent environmental and safety standards for use in various global markets.