Product Introduction

This MGN12H block corresponds to DLY MDN12H linear guide block, a long-type (H-type) carriage designed for 12mm width miniature linear guide rails. It adopts 4-point contact Gothic arch structure, featuring high rigidity, strong moment load capacity, smooth low-friction movement and long service life. Widely applied in 3D printers, CNC machines, precision instruments and automation equipment.

1. Compact Dimensions and Lightweight Construction

With a highly integrated structural design, its form factor is significantly smaller than conventional linear guide sliders, weighing only 1/3 to 1/2 of standard models. This makes it ideal for space-constrained micro-devices (e.g., semiconductor wafer inspection platforms, medical minimally invasive surgical instruments), effectively reducing the overall load and energy consumption of mechanical systems.

2. High-performance Substrate from Premium Materials

The main body is crafted from high-strength aluminum alloy 6063-T5 or stainless steel (e.g., SUS304) via precision forging. Surface treatments like hard anodizing or nickel plating ensure excellent corrosion resistance (suitable for harsh environments with moisture or dust). Molecular-level surface polishing controls rail surface roughness below Ra 0.4 μm, guaranteeing low friction and smooth operation.

3. Robust Load-bearing Capacity and Rigidity

Despite its miniature size, optimized ball row configuration and groove arc design (Gothic arch groove structure) enable a radial rated dynamic load of 2.8 kN and static load of 6.5 kN. It withstands vertical loads, lateral moments, and overturning moments simultaneously, fitting high-speed reciprocating applications in precision machining equipment (e.g., Z-axis feed systems of CNC engravers).

4. Standardized Interchangeability Design

Manufactured to strict ISO tolerance standards, same-model sliders allow seamless replacement across different batch rails without additional grinding or debugging, drastically shortening equipment maintenance cycles. Adjustable preload levels (light/medium/heavy) ensure flexible adaptation to automated production lines with varying precision requirements.

5. Low Noise and Extended Service Life (Extended Feature)

A built-in nylon cage minimizes ball collision noise (operation noise ≤55 dB), while self-lubricating grease technology (e.g., lithium-based composite grease) doubles the maintenance interval compared to traditional sliders, further reducing industrial equipment O&M costs.

Product Parameters

Linear ball bearing guides and sliders are affordable and help customers get competitive prices in the market. We have various series to choose from, such as HDH, HDW, EDH, EDW, RDH, RDW. Please review the dimensions below to select the item you need.

DLY MDN Series Linear Guide Rail Parameter Table

Application Scenarios

Typical Application Fields

3D Printing Equipment: Supports the movement systems of printing platforms and nozzles. Its precision ensures accurate nozzle movement trajectories during printing, enhancing the precision and surface quality of printed parts. The miniaturized design aligns with the compact trend of 3D printers.
Electronic Manufacturing Equipment: Meets the requirements for precise positioning and motion control in production processes such as electronic component mounting and welding, improving production efficiency and product quality.
Automated Detection Equipment: Applied in mechanisms for sample conveying and optical component adjustment, providing stable motion support for detection processes to ensure the accuracy of test results.
Small-scale Robotic Arms: Adapts to joint motion control of small robotic arms. With lightweight and low-inertia characteristics, it enables fast and precise grabbing and placing actions.

Technical Features and Advantages

1. Core Design Features

Widened Slide Rails for Enhanced Structural Performance

Compared with the standard MGN12C type, the MGN12H block features a widened design. This innovative optimization significantly improves the torque load capacity, with a static torque rating as high as 3.7 kN·m, providing reliable support for cantilever load scenarios. Meanwhile, the MGN12H block inherits the classic Gothic arch four-point contact design, ensuring excellent high rigidity when subjected to multi-directional loads such as radial, anti-radial, and lateral forces, and enabling it to handle complex working conditions with ease.

All-Material Anti-Rust for Harsh Environments

The MGN12H block specially offers a full stainless-steel version, covering all components including the slider, slide rail, steel balls, and cage. With its outstanding anti-rust performance, it is perfectly suitable for highly corrosive environments with strict requirements, such as the medical and semiconductor industries, guaranteeing the stable operation of equipment in special scenarios.

Modular Cage for Convenient Maintenance and Upgrades

The MGN12H block is equipped with a built-in wire cage, which effectively prevents the steel balls from falling off. This not only enhances the safety and reliability during product use but also supports component interchange for maintenance, greatly reducing maintenance costs and difficulties and improving equipment maintenance efficiency.

2. Performance Advantages

Ultra-High Load Capacity

Static moment reaches 3.7 kN·m (significantly higher than MGN12C), suitable for high-rigidity demand scenarios.

Dynamic/static load ratings are consistent with MGN12C (dynamic load: 2.84 kN; static load: 3.92 kN).

High-Speed Operation Stability

The optimized recirculation system reduces vibration and noise, adapting to high-speed precision equipment like robotic arms.

Long-Life Design

The extended structure disperses stress, and with standardized lubrication, it can extend fatigue life (formula: L = (C/P)³ × 50 km).

3. Key Parameter Comparison (vs. MGN12C)

Parameter	MGN12H block	MGN12C block
Static Moment	3.7 kN·m	Unreinforced (standard)
Mounting Hole Dimensions	24×19 mm	20×15 mm
Slider Length	Extended design	Standard length
Application Scenarios	Heavy load/high moment	General lightweight equipment

Product Verification

Product Quality Certification Evidence

ISO 9001 Quality Management System Certification: Passed the rigorous quality management system audit by the International Organization for Standardization (ISO). The entire process from raw material procurement, production process control to finished product inspection complies with international standards, ensuring product quality stability and consistency.

CE Safety Certification: The product meets EU CE certification standards, conforming to EU industrial equipment safety access requirements in terms of mechanical safety and electrical compatibility. It can enter the European market without barriers and is suitable for global industrial automation scenarios.

RoHS Environmental Certification: Strictly following the EU Directive on the Restriction of Hazardous Substances in Electrical and Electronic Equipment, the content of hazardous substances such as lead, mercury, and cadmium in the slider materials is below 0.1% (except for exempted substances), meeting the application requirements of green manufacturing and environmental protection equipment.

Product Testing Report Evidence

Dimensional Accuracy Testing: Full-size scanning is conducted using a Coordinate Measuring Machine (CMM). Key parameters such as slider length (45mm±0.03mm), guide rail width (12mm±0.02mm), and hole spacing (25mm±0.05mm) are controlled within the H-grade precision tolerance range, with the measured data matching the design drawings by over 99.8%.

Hardness Testing: Multiple-point sampling is performed on the slider body and guide rail surface using a Rockwell hardness tester. The surface hardness of SUJ2 bearing steel after high-frequency quenching stabilizes at HRC58-62, and the core hardness is HRC30-35, forming a structure of "hard exterior and tough interior" to ensure a balance between wear resistance and impact resistance.

Motion Performance Testing: On a simulated working condition test bench, after running 1 million cycles at a speed of 1m/s, the straightness (≤0.015mm/m), parallelism (≤0.02mm/100mm), and noise level (≤55dB) of the slider are tested. All indicators meet the dynamic operation requirements of precision equipment, with no obvious wear or performance degradation.

All testing reports are affixed with the certification seals of third-party testing organizations (such as SGS, TÜV), and complete original data records can be provided, offering authoritative evidence for customers in equipment selection, quality traceability, and compliance audits.

Intimate Service, Worry-free After-sales

At DLY, every cooperation goes beyond a simple transaction - it's a long-term partnership built on trust and responsibility.

We provide complete after-sales support to ensure each product maintains stable and precise performance during use.

Our professional service team offers prompt response and reliable assistance, helping you solve installation, debugging, and application issues efficiently. Every ball screw, linear guide, and motion component is backed by a one-year warranty, with engineers available for consultation on replacement, adjustment, and maintenance.

With over 20 years of manufacturing experience, DLY knows that dependable service is as important as product quality. That's why we follow up on every order, listen to customer feedback, and offer continuous technical support - making your cooperation truly worry-free and efficient.

Product Prices

Due to the instability of steel prices, all displayed prices are for reference only!
Please contact our customer service to confirm the quantity and unit price before placing an order! We look forward to long-term cooperation with you!