Lead screw shaft: Diameter 6-100 mm, Length Up to 6000 mm

Component Specifications

Definition

A lead screw shaft is a critical mechanical component featuring helical threads along its length that engage with a nut to translate rotational movement into precise linear displacement. This component serves as the primary drive element in lead screw mechanisms, providing accurate positioning, force transmission, and motion control in various industrial applications. Its design ensures minimal backlash and high repeatability for demanding automation tasks.

Working Principle

The lead screw shaft operates on the screw thread principle: when rotated, its helical grooves interact with a mating nut, causing either the shaft or nut to move linearly along the axis. This mechanical advantage allows controlled linear positioning with high accuracy and load capacity, making it essential for precision motion systems.

Materials

Typically manufactured from alloy steels (e.g., AISI 4140, 4340), stainless steels (304, 316), or carbon steels, often heat-treated to achieve surface hardness of 45-60 HRC. Corrosion-resistant coatings or platings (zinc, nickel) may be applied for enhanced durability.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Lead	1-50 mm
Length	Up to 6000 mm
Diameter	6-100 mm
Thread Type	Trapezoidal, Ball Screw, ACME
Accuracy Grade	C3-C10 per ISO 3408

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 3408, DIN 103, JIS B1192

Parent Products

This component is used in the following industrial products

Lead screw or drive mechanism

A mechanical component that converts rotary motion into linear motion within motorized actuators.

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Engineering Analysis

Risks & Mitigation

Backlash accumulation
Wear and thread degradation
Misalignment causing binding
Corrosion in harsh environments
Overloading leading to deformation

FMEA Triads

Trigger: Inadequate lubrication
Failure: Increased friction and premature wear
Mitigation: Implement regular maintenance schedule with appropriate lubricants

Trigger: Misalignment during installation
Failure: Binding and reduced accuracy
Mitigation: Use precision alignment tools and follow installation guidelines

Trigger: Excessive axial load
Failure: Thread deformation or shaft buckling
Mitigation: Design with proper safety factors and load limits

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.005 mm per 300 mm for precision grades

Test Method

Coordinate measuring machine (CMM) verification, surface roughness testing, hardness testing per ASTM E18

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

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Manufacturers of Lead screw shaft

Manufacturer profiles associated with Lead screw shaft.

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Frequently Asked Questions

What is the difference between a lead screw and a ball screw?

Lead screws use sliding contact between threads and nut, suitable for lower speeds and higher loads; ball screws use recirculating balls for rolling contact, offering higher efficiency and speed but at greater cost.

How do I select the right lead screw shaft for my application?

Consider load capacity, speed, accuracy requirements, environmental conditions, and mounting constraints. Key parameters include diameter, lead, material, and accuracy grade.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Lead screw shaft