Линейные направляющие
P/H/SP Precision Grades | 15–65mm Rails | Ball & Roller Types
High-жёсткость linear motion guides engineered for CNC machine tools, industrial automation, and precision positioning systems. Interchangeable with HIWIN, THK, NSK, and IKO standards.
What Is a Linear Guideway?
A linear guideway is a precision rolling-element bearing system that обеспечивает smooth, low-friction linear motion along a profiled рельс. It consists of a рельс (guide) and a каретка (каретка) with циркулирующие шарикиs or rollers, enabling high-грузоподъёмность, жёсткость, and positioning accuracy in machine tool axes.
Luoyang Songju производит линейные направляющие в стандартных и нестандартных конфигурациях, with класс точностиs ranging from general-purpose H to высокоточный P and ultra-precision SP. Our guideways are fully interchangeable with major international brands, offering a cost-effective alternative without compromising on quality.
Высокая грузоподъёмность
4-way equal load rating design
Interchangeable
Compatible with HIWIN, THK, NSK
Длительный срок службы
Precision-ground raceways, optimized seals
ISO 9001:2015
Certified quality management
Linear Guideway Models
Девять отдельных продуктовых серий, охватывающих шариковые, роликовые, миниатюрные, широкие, бесшумные и специализированные конфигурации for every linear motion application
LGS Series Ball Linear Guideway
Стандартная шариковая линейная направляющая с 4-рядным контактом по готической арке. Наиболее универсальная серия для общих применений с ЧПУ и автоматизации. Доступно в sizes 15–65mm with H, P, and SP класс точностиs.
- Sizes: 15, 20, 25, 30, 35, 45, 55, 65mm
- Grades: H, P, SP
- Преднатяг: Z0, ZA, ZB
LGR Series Roller Linear Guideway
Cylindrical roller design for ultra-high грузоподъёмность and жёсткость. 2–3x the load rating of equivalent ball-type guides. Идеально для heavy обрабатывающий центрs, large gantry machines, and high-жёсткость applications.
- Sizes: 25, 30, 35, 45, 55, 65mm
- Grades: P, SP
- Dynamic load: up to 195 kN
LG Series Ball Linear Guideway
Компактная шариковая линейная направляющая с оптимизированным поперечное сечение для ограниченного пространства. Lower profile than LGS series while maintaining excellent precision and грузоподъёмность.
- Sizes: 15, 20, 25, 30, 35mm
- Grades: H, P
- Compact поперечное сечение design
LSQ Series Silent Ball Linear Guideway
Low-noise ball linear guideway featuring optimized ball recirculation path and synthetic resin торцевая заглушкаs. Идеально для medical equipment, полупроводниковое производство, and чистое помещениеs where quiet operation is critical.
- Noise reduction: up to 6 dB(A)
- Sizes: 15, 20, 25, 30mm
- Grades: P, SP
CS Crossed Roller Linear Guideway
Non-recirculating скрещенные ролики design for the highest stiffness and accuracy. Zero cage creep with alternating orthogonal roller arrangement. Идеально для metrology stages, optical alignment, and ultra-precision positioning.
- Sizes: Custom per application
- Running parallelism: <2 um
- Limited stroke applications
LGSW Wide-Type Rolling Linear Guideway
Wide-рельс ball linear guideway with extended mounting surface for higher moment грузоподъёмность. Single рельс can replace dual-рельс setups in certain applications, reducing alignment complexity and cost.
- Sizes: 20, 25, 30, 35mm
- Grades: H, P
- High moment грузоподъёмность
Ball V-Type Linear Guideway
V-groove raceway design with 2-point ball contact for applications requiring low friction and smooth motion. Excellent for light-load precision positioning, inspection equipment, and laboratory automation.
- Sizes: 7, 9, 12, 15mm
- Low friction coefficient
- лёгкиеweight and compact
Cross Roller Linear Guideway
Compact скрещенные ролики design with alternating orthogonal cylindrical rollers. Eliminates cage creep by design. Superior straightness accuracy for precision stages, optical benches, and coordinate measuring machines.
- Sizes: Custom / modular
- Friction coefficient: 0.001 max
- Идеально для short-stroke precision
Rolling Linear Guideway Self-lubricator
Integrated self-lubrication system with high-density oil-impregnated polymer каретка. Extends maintenance intervals significantly and гарантирует consistent lubrication film on raceways. Compatible with LGS and LGR series.
- Maintenance interval: extended 5x+
- Compatible with all LGS / LGR кареткаs
- Cleanroom-compatible oil options
Linear Guideway Types
Understanding the different linear guideway configurations to select the optimal solution for your application
Ball-Bearing Guideways
The most common type, using recirculating steel balls between the рельс and каретка. Four-point Gothic arch contact обеспечивает equal грузоподъёмность in all directions. Excellent for general-purpose CNC and automation applications. Low to moderate preload options available.
Roller Guideways
Use cylindrical rollers instead of balls, achieving 2-3x higher грузоподъёмность and жёсткость. Line contact between roller and raceway распределяет load over a larger area. Preferred for тяжёлый обрабатывающий центрs, large gantry mills, and high-жёсткость applications.
Miniature Guideways
Compact linear guides with рельс widths as small as 7mm. Предназначено для space-constrained applications including semiconductor equipment, medical devices, laboratory automation, and small precision stages. Stainless steel options available for corrosion resistance.
Sliding Guideways
Plain bearing linear guides using low-friction polymer or PTFE sliding elements instead of rolling elements. Zero stick-slip, без технического обслуживания operation, and excellent damping characteristics. Подходит для cleanroom and вакуумная средаs.
Specialized Guideways
Application-specific configurations including wide-рельс (LGSW) for single-рельс applications, silent (LSQ) for low-noise environments, скрещенные ролики for ultra-precision, and self-lubricating types for extended maintenance intervals in hard-to-reach installations.
Corrosion-Resistant Options
Stainless steel рельсs and кареткаs with specialized surface treatments (black chrome, electroless nickel plating) for тяжёлые условия эксплуатацииs. Available across ball-type and miniature series for food processing, chemical, marine, and outdoor applications.
Почему выбирают Our Линейные направляющие
Разработано для performance, manufactured to international standards
Low Friction
Rolling element design достигает a friction coefficient as low as 0.002-0.004, significantly lower than traditional sliding guides (0.1-0.2). This translates to reduced motor power requirements, less heat generation, and smoother motion at both high and low speeds.
High Жёсткость
Four-row Gothic arch contact (ball type) and cylindrical roller line contact (roller type) provide exceptional жёсткость in all four loading directions. Преднатяг options (Z0, ZA, ZB) allow stiffness tuning for specific application requirements.
Positioning Accuracy
Precision-ground raceways achieve running parallelism within 2-10 um depending on grade. SP-grade guideways deliver sub-micron repeatability for the most demanding applications. Minimal elastic deformation under load гарантирует consistent positioning.
Длительный срок службы
Optimized ball recirculation path and high-quality торцевое уплотнениеs minimize wear and contamination ingress. Properly lubricated guideways routinely achieve 20,000+ operating hours. Self-lubricator option extends maintenance intervals up to 5x.
Full Interchangeability
Rails and кареткаs are manufactured to tight dimensional tolerances, allowing individual components to be replaced without re-machining mounting surfaces. Fully interchangeable with equivalent HIWIN HG/EG, THK HSR/SHS, and NSK LA/LE series.
Smooth Motion
Precision-machined ball retainer chains and optimized recirculation geometry ensure near-zero pulsation during motion. This is critical for surface finish quality in grinding and milling applications where any vibration translates directly to the workpiece.
Industries & Use Cases
Linear guideways are fundamental components across a wide spectrum of precision machinery and automation systems
Станки с ЧПУ
Primary application for linear guideways. Used on X, Y, Z axes of vertical обрабатывающий центрs, horizontal обрабатывающий центрs, turning centers with live tooling, and 5-axis machines. Requires H to SP grade depending on required accuracy.
Industrial Robotics
Linear axes for Cartesian robots, gantry robots, SCARA arms, and pick-and-place systems. Long-travel configurations with joined рельсs enable strokes exceeding 10 meters for large automation cells and warehouse logistics.
Semiconductor Manufacturing
Wafer handling stages, die bonders, wire bonders, inspection systems. Requires SP-grade accuracy, low particle generation, and cleanroom-compatible materials. Stainless steel and low-outgassing lubrication options available.
Medical Equipment
CT scanner patient tables, MRI positioning stages, surgical robots, diagnostic imaging gantries. LSQ silent series preferred for patient comfort. Corrosion-resistant options for sterilization-compatible equipment.
3D Printing / Additive Manufacturing
Linear motion axes for FDM, SLA, SLS, and metal powder bed fusion printers. Smooth motion at low speeds is critical for layer consistency. Compact LG series and miniature guides fit space-constrained printer frames.
Metrology & Inspection
Coordinate measuring machines (CMM), optical comparators, vision measurement systems, surface profilometers. Crossed roller and SP-grade ball guideways deliver the sub-micron straightness and repeatability these instruments demand.
Custom Linear Guideway Manufacturing
Beyond our standard series, we offer comprehensive OEM and custom manufacturing services for linear guideways tailored to your exact specifications. Наша инженерная команда работает directly with your design to optimize guideway selection, mounting geometry, preload, and lubrication.
Custom Rail Lengths
Single-piece рельсs up to 4,000mm, joined рельсs for unlimited stroke lengths
Special Surface Treatments
Black chrome, electroless nickel, QPQ nitriding for corrosion and wear resistance
Custom Carriage Configurations
Flanged, square, or extended кареткаs with custom mounting hole patterns
Private Label / Branding
Laser-etched part numbers, custom packaging, and your brand on the product
Application-Specific Смазка
Food-grade, vacuum-compatible, высокотемпературный, or low-outgassing grease options
Standard Customization Options
Indicative Price Ranges
Prices vary by size, класс точности, класс преднатяга, and quantity. Контакты us for a detailed quotation tailored to your specifications.
Standard Ball Type
LGS / LG series. Rail + 1 каретка. H grade. For general CNC and automation applications.
High-Load Roller Type
LGR series. Rail + 1 каретка. P grade. For тяжёлый machining and high-жёсткость requirements.
Pricing is indicative FOB China. Volume discounts available for orders of 100+ meters. Custom configurations priced separately.
Request Detailed QuotationFrequently Asked Questions
Common technical questions about linear guideway selection and usage
Преднатяг selection depends on your жёсткость and accuracy requirements:
- Z0 (Zero / лёгкие Преднатяг) -- General automation, material handling, low-speed applications. Lowest friction, highest travel life.
- ZA (средние Преднатяг) -- General CNC machine tools, moderate cutting loads. Good balance of жёсткость and life. This is the most common selection.
- ZB (Heavy Преднатяг) -- High-жёсткость applications, тяжёлое резание, cantilevered loads, and where minimal elastic deformation is critical. Higher friction снижает life slightly.
For most CNC обрабатывающий центр applications, we recommend ZA preload. Контакты our engineering team for application-specific guidance.
Linear guideways require grease or масляная смазка on the ball/roller recirculation path. Recommendations:
- Пластичная смазка lubrication -- Most common. Use lithium soap-based grease NLGI No. 1 or 2. Re-lubrication interval: every 100 km of travel or 3-6 months, whichever comes first.
- Oil lubrication -- For высокоскоростной applications (>60 m/min). ISO VG 32-68 oil. Typically via central lubrication system or oil-air mist.
- Self-lubricator option -- Our oil-impregnated polymer каретка extends re-lubrication intervals up to 5x. Идеально для hard-to-access installations.
Always ensure торцевое уплотнениеs and side seals are intact. Contamination is the number one cause of premature guideway failure.
Yes, рельсs can be butt-joined end-to-end to achieve virtually unlimited stroke lengths. Key considerations:
- Max single-piece length -- 4,000mm for standard production. Longer single pieces available on request.
- Butt-joined рельсs -- We supply matched sets with ground ends and matched marking. The joint gap is controlled to within 0.02mm and the step at the joint is ground flush.
- Staggered joints -- For dual-рельс systems, we recommend staggering рельс joints so they do not align across рельсs, minimizing the effect on каретка motion.
- Installation note -- Use the reference edge for alignment. Joined рельсs are marked with sequential numbers and a common reference side.
We have supplied joined рельс systems for gantry machines with strokes exceeding 20 meters.
Cage creep is a phenomenon where the roller cage (retainer) gradually drifts from its intended position during reciprocating motion in non-recirculating linear guides like скрещенные ролики types.
Causes and solutions:
- Root cause -- Slight asymmetry in acceleration/deceleration, inconsistent lubrication, or off-center loading causes the cage to drift over many cycles.
- Our solution -- Luoyang Songju CS series скрещенные ролики guideways use an anti-creep mechanism with a gear-and-rack synchronization system between the cage and the рельс, mechanically preventing drift.
- Alternative approach -- External cage guides or split-cage designs with spring preload can also mitigate creep in certain configurations.
- Application note -- Cage creep is not an issue in циркулирующие шарики or roller type guideways (LGS, LGR series) because the rolling elements are continuously recirculated.
Для применений, требующих скрещенные ролики guides with long stroke or high cycle rates, specify the anti-creep mechanism at time of order.
Нужны a Custom Linear Guideway Solution?
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