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Trapezoidal Lead Screws for Linear Actuators and Positioners
Your linear actuator prototype works perfectly with sample parts, but when production batches arrive, half the trapezoidal lead screws fail fit testing because the factory couldn't replicate the ±0.02 mm pitch accuracy from samples. Where backlash matters, consider ground ball screw assemblies or NEMA-frame stepper motors with integrated lead screw. Now you're facing either expensive rework or starting the supplier search from scratch while your launch date slips.
This directory exists to prevent that cycle. Verified Chinese factories producing trapezoidal lead screws for linear actuators, CNC machinery, and robotics applications show production capacity (50,000 to 200,000 pieces monthly), quality certifications, and thread configurations including ACME profiles, metric trapezoidal screw standards, and multi-start designs. Contact suppliers directly or submit an RFQ to compare capabilities across matched factories.
However, factory listings only display operational history, workforce size (50 to 500 employees), and product categories with general pricing ranges. The technical details that determine whether a supplier can consistently maintain your tolerances across production runs appear only after direct contact or RFQ submission: measurement equipment specifications (coordinate measuring machines, thread micrometers, optical comparators), heat treatment capabilities (induction hardening, through-hardening to HRC 45-58), material traceability systems, and statistical process control data showing actual pitch accuracy over 500-piece batches.
No middleman margin applies - factory-direct pricing runs 15-30% below distributor rates with no platform fee for buyers. RFQ submissions carry no platform MOQ restriction, though individual factories set their own volume preferences. About 90% of requests generate responses from eight or more manufacturers. Three NDA options are available before sharing drawings: open access, the platform's standard digital agreement, or your own contract that suppliers must sign before viewing files. One point of contact - your dedicated English-speaking account manager - coordinates technical discussions and verifies supplier capabilities before orders are placed, at no added cost.
Other related parts categories: Ball Screws, Ball Screw Support Units, Ball Splines, Lead Screw Stepper Motors
Frequently Asked Questions
What should I include in my RFQ for trapezoidal lead screws?
Specify the thread profile (ACME, metric trapezoidal, or multi-start), pitch accuracy target (±0.02 mm), hardness range after heat treatment (HRC 45-58), monthly quantity, and required certifications. Factory listings show operational history, workforce size, and general pricing, but the thread configuration and inspection data that determine fit consistency only surface through direct contact or a detailed RFQ.
How do I verify a factory can hold ±0.02 mm pitch accuracy across production batches, not just samples?
Request statistical process control data showing actual pitch accuracy over a 500-piece batch, along with the measurement equipment used to generate it (coordinate measuring machines, thread micrometers, or optical comparators). Sample parts passing fit testing doesn't guarantee batch consistency - that's exactly the gap that causes half a production run to fail fit testing after sample approval, so ask for batch-level data before committing to volume.
What hardness and heat treatment should I specify for trapezoidal lead screws?
State whether you need induction hardening or through-hardening and the target range (HRC 45-58 depending on load and wear requirements). Ask the factory which method they use by default and whether it changes with screw diameter, since heat treatment process directly affects both pitch stability and wear life over the screw's service life.
How Do I Find a Verified Trapezoidal Lead Screw Manufacturer in China Instead of Vetting Suppliers Myself?
Instead of vetting trapezoidal lead screw suppliers yourself, Haizol's directory has already screened every factory it lists, so you can go straight to manufacturers matching your thread profile and contact them directly. Pricing comes straight from the factory with nothing added on top, Haizol isn't a middleman on cost. Once you're in touch, ask whether they use induction hardening or through-hardening and request statistical process control data proving pitch accuracy holds across a 500-piece batch, not just on samples. Factories typically respond within 24 hours, and an account manager can submit your RFQ across multiple suppliers at once if you'd rather skip individual outreach.
What are realistic lead times for trapezoidal lead screw production, and how do I avoid fit-testing failures?
Sample approval typically takes 1-2 weeks, with batch production adding several more weeks depending on the factory's monthly capacity. Before releasing the full order, request pitch accuracy data from an initial production run rather than relying on the sample alone, since sample parts can pass fit testing while a production batch drifts outside ±0.02 mm - the exact failure mode that forces rework or a restarted supplier search after launch dates have already been set.