S-98940A717 3/4"-6 x 3 ft. Fast-Travel Precision Acme Lead Screws and Nuts

Key Features & Benefits at a Glance

• Enhanced Durability and Corrosion Resistance – Black-oxide coated 4140 alloy steel with hardening treatment provides superior wear resistance and longevity in demanding industrial environments.
• Exceptional Precision in Motion Control – ±0.009" per foot travel accuracy ensures reliable, repeatable positioning for high-precision automation and machinery applications.
• Optimized for Fast-Travel Applications – 0.333" travel distance per turn and 2:1 speed ratio enable rapid linear movement, improving cycle times and operational efficiency.
• Robust Mechanical Strength – 125,000 psi tensile strength and Brinell 271 hardness deliver high load capacity and resistance to deformation under stress.
• Reliable Thread Engagement – Class 2C thread fit and fully threaded Acme design ensure smooth, low-friction operation with consistent performance over extended use.
• Versatile Left-Hand Threading – Two thread starts and left-hand direction accommodate specialized motion setups, offering design flexibility for reverse or complementary drive systems.
• Compliant with Environmental Standards – RoHS 3 (2015/863/EU) compliance guarantees that the lead screw meets stringent regulatory requirements for hazardous substance restrictions.

Professional Applications & Engineering Value

This 3/4"-6 Left Hand Acme Lead Screw is engineered to address critical challenges in precision motion control systems, where accuracy, speed, and durability are paramount. Constructed from hardened Black-Oxide 4140 Alloy Steel, it combats wear and corrosion in harsh operational conditions, extending service life in CNC machinery, automated assembly lines, and material handling equipment. The Acme threading and Class 2C thread fit provide low backlash and efficient power transmission, minimizing maintenance needs. With a travel accuracy of ±0.009" per foot and a 0.333" travel distance per turn, it supports fast-travel applications without sacrificing precision, making it ideal for high-speed positioning and repetitive cycling tasks. The left-hand thread direction and 2:1 speed ratio further enhance its utility in custom engineering solutions, ensuring reliable performance in bidirectional or synchronized drive systems.

Specification Summary & Compliance

This lead screw adheres to inch system measurements with a Class 2C thread fit for consistent Acme thread engagement. It features a 3/4"-6 thread size, fully threaded design, and 2 thread starts for optimized motion control. Manufacturing complies with RoHS 3 (2015/863/EU) standards, ensuring environmental safety and regulatory conformity. The specified ±0.009" per foot accuracy and mechanical properties, including 125,000 psi tensile strength and Brinell 271 hardness, guarantee reliable performance in precision industrial applications.