S-91808A112 1 1/4"-5 Acme Lead Screws and Nuts
Acme Lead Screws and Nuts
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Basic Information
Thread Parameters
Dimension Parameters
Lead Screw Specific Parameters
Nut Parameters
Load & Performance Parameters
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Key Features & Benefits at a Glance
- High tensile strength of 64,000 psi provides reliable performance under heavy loads in demanding industrial applications.
- Exceptional durability with Rockwell B85 hardness ensures long service life and resistance to wear in repetitive motion systems.
- Precise left-hand Acme threading (1 1/4"-5) with Class 2G fit offers smooth, backlash-resistant operation for accurate positioning.
- Efficient 0.2" travel per turn enables quick linear movement with a single thread start, ideal for speed-critical machinery.
- Robust Grade 2 carbon steel construction delivers excellent mechanical properties and corrosion resistance for harsh environments.
- Standard hex nut design allows for easy installation and maintenance using common tools, reducing downtime.
- Full compliance with RoHS 3 and REACH ensures environmental safety and global regulatory acceptance for industrial use.
Professional Applications & Engineering Value
This left-hand Acme nut is engineered from Grade 2 carbon steel to address critical challenges in industrial automation and heavy machinery. Its Acme thread form and Class 2G thread fit provide high load-bearing capacity and minimal backlash, making it ideal for precision linear motion systems like CNC machines, presses, and lifting equipment. The 0.2" travel per turn ensures efficient movement in applications requiring controlled speed and accuracy, while the left-hand thread direction offers versatility in assemblies where reverse motion is necessary. Built to withstand rigorous conditions, this nut reduces maintenance needs and enhances operational reliability in sectors such as manufacturing, automotive, and material handling.
Specification Summary & Compliance
This Acme nut adheres to Class 2G thread fit tolerances for consistent performance, with a 1 1/4"-5 thread size in the inch measurement system. It meets Grade 2 standards for carbon steel fasteners, ensuring tensile strength and hardness specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), supporting safe and sustainable industrial practices without hazardous substances.
