Industry-Verified Manufacturing Data (2026)

Lead Screw

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Lead Screw used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Lead Screw is characterized by the integration of Threads and Shaft Body. In industrial production environments, manufacturers listed on CNFX commonly emphasize Stainless Steel construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A threaded rod that converts rotational motion into linear motion within a linear actuator assembly.

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Product Specifications

Technical details and manufacturing context for Lead Screw

Definition
A precision mechanical component in linear actuator assemblies that features helical threads along its length. When rotated, these threads engage with a nut or mating component to produce precise linear displacement, enabling controlled movement in automation, positioning systems, and mechanical drives.
Working Principle
Rotational force applied to the lead screw causes the engaged nut to travel along the screw's helical threads, converting rotary motion into linear motion. The pitch of the threads determines the linear travel distance per revolution.
Common Materials
Stainless Steel, Carbon Steel, Alloy Steel
Technical Parameters
  • Diameter and pitch specifications that determine load capacity and linear travel speed (mm) Standard Spec
Components / BOM
  • Threads
    Helical grooves that engage with the nut to produce linear motion
    Material: steel
  • Shaft Body
    Main structural support that transmits torque and handles axial loads
    Material: steel
  • End Machining
    Precision machined ends for bearing mounting or coupling connections
    Material: steel
Engineering Reasoning
Axial load 0-5000 N, rotational speed 0-3000 rpm, temperature -40°C to 120°C
Shear stress exceeds 345 MPa (yield strength of 4140 steel), thread deformation exceeds 0.1 mm permanent set, or backlash exceeds 0.05 mm
Design Rationale: Thread shear failure due to Tresca yield criterion violation under combined torsional and axial loading, or wear-induced backlash from abrasive particle contamination exceeding 15 μm size
Risk Mitigation (FMEA)
Trigger Lubricant starvation causing boundary lubrication regime
Mode: Exponential wear rate increase (Archard's law) leading to 0.2 mm backlash in 1000 cycles
Strategy: Integrated grease reservoir with 5 μm filtration and wear-resistant coating (DLC or TiN) on thread flanks
Trigger Misalignment exceeding 0.02 mm/mm over 300 mm length
Mode: Bending moment-induced thread root stress concentration (Kt=2.8) causing fatigue crack initiation at 10^5 cycles
Strategy: Self-aligning nut design with spherical washers and alignment tolerance of 0.005 mm/mm

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Lead Screw.

stainless steel lead screw actuator carbon steel threaded rod linear motion alloy steel lead screw BOM components machinery equipment lead screw specifications industrial linear actuator lead screw replacement

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Linear Actuator Assembly
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Vertical Column
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Cross Slide
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Positioning Mechanism
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Alignment Actuators
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Translation Actuators
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Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Axial load capacity: 100N to 50kN (dependent on screw diameter and material)
other spec: Maximum linear speed: 0.1-1.0 m/s (dependent on pitch and RPM limits)
temperature: -40°C to 120°C (dependent on material and lubrication)
Media Compatibility
✓ Industrial machinery lubrication oils ✓ Clean dry air environments ✓ General industrial atmospheres
Unsuitable: High-concentration abrasive slurry environments
Sizing Data Required
  • Required axial load capacity (N)
  • Required linear travel distance (mm)
  • Required positioning accuracy/repeatability (mm)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Thread wear and backlash
Cause: Insufficient lubrication leading to metal-on-metal contact, abrasive contamination in the lubricant, or misalignment causing uneven loading and accelerated wear.
Lead screw bending or buckling
Cause: Excessive axial load beyond design limits, improper installation causing misalignment, or impact loading during operation.
Maintenance Indicators
  • Audible grinding or squeaking noises during operation indicating lubrication failure or contamination
  • Visible wobble or runout in the screw during rotation, suggesting bending, bearing failure, or mounting issues
Engineering Tips
  • Implement a strict lubrication schedule using manufacturer-recommended grease or oil, and install protective bellows or covers to prevent contamination ingress
  • Regularly check and adjust alignment using precision instruments, and install overload protection devices to prevent excessive axial forces

Compliance & Manufacturing Standards

Reference Standards
ISO 2904:2010 (Lead screws for machine tools) ANSI/ASME B5.48-1977 (Lead screws and nuts) DIN 103:1999 (Trapezoidal screw threads)
Manufacturing Precision
  • Lead accuracy: ±0.005 mm per 300 mm
  • Thread flank angle tolerance: ±15 minutes of arc
Quality Inspection
  • Lead error measurement (using laser interferometer or ball-bar system)
  • Hardness testing (Rockwell C scale for screw material)

Factories Producing Lead Screw

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Project Engineer from Germany Jan 05, 2026
★★★★★
"Great transparency on the Lead Screw components. Essential for our Machinery and Equipment Manufacturing supply chain."
Technical Specifications Verified
S Sourcing Manager from Brazil Jan 02, 2026
★★★★★
"The Lead Screw we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
P Procurement Specialist from Canada Dec 30, 2025
★★★★★
"Found 45+ suppliers for Lead Screw on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

6 sourcing managers are analyzing this specification now. Last inquiry for Lead Screw from Brazil (1h ago).

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Frequently Asked Questions

What materials are best for lead screws in heavy machinery applications?

For heavy machinery, alloy steel offers optimal strength and wear resistance, while stainless steel provides corrosion resistance for harsh environments. Carbon steel is cost-effective for standard applications.

How do I select the right lead screw for my linear actuator assembly?

Consider load capacity, speed requirements, precision needs, and environmental conditions. The BOM components (threads, shaft body, end machining) must match your actuator's specifications for proper conversion of rotational to linear motion.

What maintenance do lead screws require in industrial equipment?

Regular lubrication, cleaning to remove debris, and inspection for thread wear or damage. Proper alignment in the actuator assembly is crucial to prevent premature failure and maintain motion accuracy.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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