Server rail factory · Hunan, China · ISO 9001:2015

Custom High-Load Server Rails for AI, GPU & Liquid-Cooled Infrastructure

1U–10U rails up to 180kg per pair, roll-formed and stamped in our own plant, engineered to your chassis drawing.

MetrixSlide designs and manufactures server rails for OEMs, server makers and system integrators worldwide: standard kits with MOQ 1, and custom rails with no tooling fee and no MOQ on flexible changes.

  • No tooling fee
  • 24h fitment proposal
  • MOQ 1 · ships in 3 days
  • 60+ countries
Products

Standard rail kits, rails customized to your chassis, and a clear process from drawing to delivery.

Custom Capability

Custom server rails, adapted to your chassis

Three questions decide most server rail projects: can you adapt to my chassis, how fast can you deliver, and do you really understand rack compatibility. Here is how we handle each.

Rack of customer-specific rail dies in the MetrixSlide tooling store
Customization

Bounded customization with no tooling fee

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Bracket position, hole pattern, rail length and material thickness can be adapted to your chassis on our existing rail platforms without NRE. Structural changes and 1:1 redevelopment are quoted separately with tooling made in-house.

  • Bracket, hole-pattern, length and thickness adjustments
  • Stab-in to drop-in conversions, T-pin / keyhole interfaces
  • In-house die design and machining for customer-specific profiles
  • Drawing revision history kept from Rev. A to design freeze
Export cartons of server rail kits ready to ship
Delivery

From verified drawing to shipped samples in weeks

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A rail matching proposal within 24 hours of receiving your chassis and rack inputs, CAD for your review, then sample pairs for physical validation before volume production.

  • 24-hour rail matching proposal
  • Sample pairs typically 15–20 days after drawing approval
  • Export cartons and palletised packing for sea or air freight
  • Factory-direct EXW pricing, 60+ countries served
Progressive stamping die producing rail members with punched slots and keyholes
Engineering

Compatibility-first engineering, not catalogue matching

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Our engineers evaluate chassis-side and rack-side constraints against the rail's capability envelope: mounting depth, hole type, interface alignment and load at full extension, validated from requirement to CAD to physical fit.

  • EIA-310-D / IEC 60297 and OCP Open Rack V3 interfaces
  • Load figures stated per pair, with their test basis
  • 24-hour static load test at full extension, with test summaries to download
  • Stamping precision for smooth, jam-free installation
How we work together

From first conversation to installed rails in eight steps

The same process for a standard kit or a fully custom rail: you send the inputs, we return drawings, samples prove the fit, then we build the full order and support installation.

  1. 01

    Discuss your requirements

    Application, server type, quantities and timeline. An engineer joins the first conversation.

  2. 02

    Send chassis & rack parameters

    Chassis drawing or model, width and depth, mounting features, rack post distance and load.

  3. 03

    We deliver a 2D / 3D model

    A rail matching proposal within 24 hours, then 2D drawings or a 3D model for your review.

  4. 04

    You place a sample order

    Typically 10–100 pairs, enough to test fit and function on real chassis and racks.

  5. 05

    We tool up and produce samples

    Custom dies are made in-house, samples are built, inspected and shipped to you.

  6. 06

    You validate and place the full order

    Physical fit and load checks on your side, then the design is frozen and the production order confirmed.

  7. 07

    Volume production and delivery

    Full-quantity production under ISO 9001 controls, export packing and shipment by sea or air.

  8. 08

    Installation with our support

    Installation guidance and after-sales support from the factory for every kit delivered.

Factory

Where the rails are made: our own plant, tooling workshop and quality system.

Manufacturing at Scale

Advanced manufacturing. Strict quality control. Reliable global delivery.

3,000,000+Rail Sets Produced Per Year
50,000㎡+Manufacturing Facility
1U–10USupported Server Heights
Up to 180kgLoad Capacity per Pair
OEM / ODMEngineering Support
CAD & PrototypeFast Development Service
ISO 9001 Certified
Strict Quality Control
100% Functional Testing
Global Shipping
Factory Advantages

Why Leading OEMs Choose MetrixSlide

$0 Tooling Fee on Flexible Custom
No MOQ On Flexible Customization
±0.08mm Precision Tolerance
Factory-Direct Competitive EXW Pricing
24h Rail Matching Response
60+ Countries Served
Certifications

Certifications, patents and the standards we design to

Quality-system certification, an invention patent on anti-sag slide structure, and rack standards applied on every drawing.

Certification

ISO 9001:2015 Quality Management System

Certified quality management system for slide rail processing, covering incoming material, stamping, assembly and final inspection.

Certification

ISO 14001 Environmental Management

Environmental management system certification covering the rail manufacturing site.

Invention patent

Patented Anti-Sag Slide Rail Structure

Invention patent for a slide rail structure that resists sagging at full extension, applied in our heavy-duty rail development.

Standards we design to

EIA-310-D · IEC 60297-3-100 / -105 · OCP Open Rack V3

19-inch (482.6 mm) rack and 1U chassis dimensions, square / round / threaded post holes, and 21-inch ORv3 payload interfaces.

Cold-rolled steel coil, the raw material for every rail member
Cold-rolled steel coil, the raw material for every rail member
Roll-forming line with decoiler feeding cold-rolled strip
Roll-forming line with decoiler feeding cold-rolled strip
Progressive stamping die in the press before the stroke
Progressive stamping die in the press before the stroke
In-house tooling workshop machining a customer-specific die
In-house tooling workshop machining a customer-specific die
One die set per customer rail design, kept for repeat orders
One die set per customer rail design, kept for repeat orders
Finished rail kits being packed for export
Finished rail kits being packed for export

Real photos from our production floor. See the full tour on the About page. Load test summaries and a steel mill certificate are on the Downloads page.

FAQ

Questions OEM & ODM Buyers Ask First

Straight answers on load capacity, customization, tooling, lead time, testing and NDAs.

Do you design custom rails for AI and GPU servers?

Yes. We build server rails for 1U to 10U chassis in 19-inch racks, including a heavy-duty rail platform with a nominal capacity of up to 180 kg per pair. For a new program, our engineers first check whether an existing platform can be adapted to your chassis; if not, we propose a customized architecture.

What is the maximum load capacity of your server rails?

Our heaviest platform has a nominal capacity of up to 180 kg per pair; a formal test report at that load is not available yet. In the factory static-load test, one pair of MS-FMR-2U-100 rails held 100 kg at full extension for 24 hours. A load figure only means something with its conditions, so we confirm the margin for your working load against your actual chassis weight and depth during engineering evaluation.

Can you develop a rail from requirements, or do you need finished CAD drawings?

We can start from requirements. Completed CAD is not needed. To begin, send chassis width and depth, loaded weight, rack post-to-post depth, rack hole type, the chassis mounting interface and the travel you need. We return a rail matching proposal within 24 hours and supply CAD/STEP files for your review.

Is there an NRE or tooling charge?

Not for bounded customization. Bracket position, hole pattern, rail length and material thickness can be adapted on our existing platforms without a tooling fee. Structural changes, new profiles and 1:1 redevelopment are quoted separately, with dies designed and machined in-house.

What are your MOQ and lead times?

Standard models have an MOQ of one pair and ship in 3 business days. For custom projects, sample pairs are typically ready 15 to 20 days after drawing approval. Production MOQ, volume pricing and production lead time are quoted per project once the specification is confirmed.

Which racks and mounting types do your rails support?

19-inch EIA-310-D racks with square, round or threaded post holes, with tool-less or screw-mounted brackets and adjustable rack depth. We offer full-extension ball-bearing rails, friction rails and fixed support rails, in stab-in or drop-in installation, and we also work with OCP Open Rack V3 interfaces.

What testing do you carry out?

Every rail is functionally tested before shipping. In the factory static-load test a rail pair is held under load at full extension for 24 hours; test summaries for tested models are on the Downloads page. For OEM/ODM programs, the load, cycle, deflection and environmental tests are agreed with you as a validation plan, and samples are physically validated before design freeze.

What certifications and quality systems do you have?

Our manufacturing is certified to ISO 9001:2015 for quality management and ISO 14001 for environmental management. We design to EIA-310-D and IEC 60297, and our heavy-duty development uses a patented anti-sag slide rail structure.

Will you sign an NDA before we share proprietary drawings?

Yes. We sign a mutual NDA before receiving proprietary drawings or mechanism details, after review by our legal team. One die set is kept per customer rail design for repeat orders.

Have a question about your own chassis? Send us your requirements and an engineer will reply within 24 hours.

Building AI Infrastructure?

Let our engineers design the right rail solution for your platform.

  • AI Servers
  • GPU Servers
  • Liquid-Cooled Servers
  • High-Density Computing
  • Telecom Equipment
  • Storage Systems
  • Custom Rack Projects
  • Enterprise Data Centers

Need rails sized to your exact rack?

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