Drive Nut: Load Capacity Up to 100 kN dynamic, Lead 2mm to 40mm

Component Specifications

Definition

A drive nut is a critical mechanical component in ball screw drive systems that engages with the screw's helical threads to translate rotational motion from the motor into precise linear displacement. It contains recirculating ball bearings that roll between the nut and screw threads, minimizing friction and enabling high efficiency, accuracy, and load capacity in industrial machinery.

Working Principle

The drive nut operates on the principle of the ball screw mechanism. When the screw rotates, the balls within the nut's raceways recirculate, causing the nut to move linearly along the screw axis. This converts torque from the motor into axial force with minimal backlash, providing smooth, precise motion control.

Materials

Typically made from hardened alloy steel (e.g., AISI 52100, 440C) or stainless steel (e.g., AISI 304, 316) for corrosion resistance. May include polymer inserts for noise reduction. Surface treatments like nitriding or chrome plating enhance wear resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Lead	2mm to 40mm
Backlash	0.005mm to 0.05mm
Load Capacity	Up to 100 kN dynamic
Accuracy Grade	C3 to C7 (ISO 3408)
Operating Speed	Up to 3 m/s
Thread Diameter	6mm to 80mm

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 69051

Parent Products

This component is used in the following industrial products

Drive System (Motor & Screw)

A mechanical assembly that converts rotary motion from a motor into precise linear motion for positioning and movement within a machine bridge or gantry.

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Engineering Analysis

Risks & Mitigation

Backlash leading to positioning errors
Wear from contamination or misalignment
Overload causing ball deformation or thread damage
Corrosion in harsh environments

FMEA Triads

Trigger: Contamination (dust, debris) entering the ball circuit
Failure: Increased friction, wear, and eventual seizing
Mitigation: Use seals or wipers, implement regular cleaning, and operate in clean environments

Trigger: Improper lubrication or dry running
Failure: Overheating, accelerated wear, and reduced lifespan
Mitigation: Apply appropriate lubricants (grease or oil) regularly, follow manufacturer maintenance schedules

Trigger: Misalignment during installation
Failure: Uneven load distribution, vibration, and premature failure
Mitigation: Ensure precise alignment using alignment tools, follow installation guidelines, and use flexible couplings if needed

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Accuracy grades per ISO 3408 (e.g., C3: ±0.005mm/300mm)

Test Method

Dimensional checks with micrometers, backlash measurement using dial indicators, load testing per ISO 3408-5

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

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Drive Nut

Manufacturer profiles associated with Drive Nut.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between a drive nut and a standard nut?

A drive nut is specifically designed for ball screw systems with recirculating ball bearings for smooth linear motion, while a standard nut is for general fastening with higher friction and less precision.

How do I select the right drive nut for my application?

Consider load capacity, speed, accuracy grade, environmental conditions (e.g., temperature, corrosion), and compatibility with the screw diameter and lead. Refer to ISO 3408 standards for guidance.

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.

Drive Nut