Шарико-винтовые пары (ШВП)
High-Precision C2/C3 | Diameter 8-100mm | DIN 69051
High-efficiency motion conversion from rotary to linear with >90% mechanical efficiency. FCD, FC/FCZ, FY/FYZ, FYD, and FYB series covering external and internal recirculation types. Разработано для CNC machine tools, industrial robots, semiconductor equipment, aerospace actuators, and precision automation.
What Is a Ball Screw?
A ball screw is a mechanical linear actuator that converts rotary motion into linear motion with minimal friction. It consists of a threaded вал (screw), a nut containing recirculating шарикоподшипники, and прецизионно шлифованная raceways. As the screw rotates, balls roll along the helical groove, transferring motion through the nut while providing extremely low rolling resistance.
Ball screws achieve >90% mechanical efficiency — far superior to traditional ход screws (typically 20-40%). They deliver exceptional positioning accuracy, repeatability down to the micron level, long срок службы under high load, and smooth operation across a wide speed range. These characteristics make ball screws the motion backbone of precision machinery worldwide.
Low Friction
Rolling contact снижает energy loss
High Accuracy
Micron-level positioning repeatability
Длительный срок службы
Hardened raceways resist wear
High Speed Capability
Smooth operation across wide RPM range
Ball Screw Series Обзор
Five distinct ground ball screw series covering external and internal recirculation types, and a broad dimensional range to meet every precision motion requirement.
FCD Series Шарико-винтовые пары (ШВП)
Double-nut preloaded design for zero-backlash applications. External tube-type recirculation гарантирует smooth ball return and высокоскоростной capability. Идеально для CNC обрабатывающий центрs and высокоточный positioning stages requiring maximum жёсткость.
- Diameter: 16-80mm
- Lead: 5-40mm
- Accuracy: C2, C3
FC (FCZ) Series Шарико-винтовые пары (ШВП)
Single-nut design with internal дефлектор recirculation for compact axial space. FCZ variant имеет optimized дефлектор geometry for reduced noise and improved высокоскоростной performance. Excellent choice for general-purpose CNC feed axes and automation equipment.
- Diameter: 12-63mm
- Lead: 4-32mm
- Accuracy: C2, C3
FY (FYZ) Series Шарико-винтовые пары (ШВП)
High-precision ground ball screws with internal recirculation. C2/C3 accuracy for demanding linear motion applications. Widely used in CNC machine tools, precision automation, semiconductor equipment, and general industrial actuation.
- Diameter: 8-63mm
- Lead: 4-40mm
- Accuracy: C2, C3
FYD Series Шарико-винтовые пары (ШВП)
Flanged-nut ground ball screw series engineered for simple mounting and reduced assembly time. Pre-drilled фланец bolt pattern matches standard industry mounting interfaces. Popular choice for linear modules and single-axis actuators.
- Diameter: 15-50mm
- Lead: 5-25mm
- Accuracy: C3
FYB Series Шарико-винтовые пары (ШВП)
Micro ball screw series designed for small-diameter, miniature applications. Available down to 8mm diameter for compact precision mechanisms in semiconductor equipment, medical devices, and laboratory automation where space is critical.
- Diameter: 8-25mm
- Lead: 2-10mm
- Accuracy: C2, C3
How to Select the Right Ball Screw
Five key parameters to specify for optimal ball screw performance in your application
Nominal Diameter & Lead
Diameter (O8-O100mm) determines грузоподъёмность — larger diameters handle higher осевая нагрузкаs. Lead (typically 5-40mm) determines linear speed: speed = ход x RPM. Match the diameter/ход combination to your required travel speed and load. FCD series предлагает the widest diameter range for тяжёлый applications.
Accuracy Grade — C2, C3, C5, or C7?
C2 (DIN 69051 Class 2): ultra-precision, <5 micron ход error per 300mm. For semiconductor wafer stages, precision measurement. C3 (Class 3): high precision, <12 micron. Standard for CNC machine tools. C5 (Class 5): general precision, <23 micron. For industrial automation. C7 (Class 7): rolled screws, <52 micron. Economical for material handling. Luoyang Songju supplies C2 and C3 precision ground screws в стандартной комплектации.
Преднатяг Class — Eliminate Backlash
Standard (no preload): acceptable for general positioning where reversal error is tolerated. лёгкие preload (P1): устраняет backlash with minimal friction increase — preferred for most CNC applications. средние preload (P2): high stiffness for тяжёлое резание loads. Heavy preload (P3): maximum жёсткость, used in высокоточный grinding machines. FYD and FYB series feature double-nut designs for preload adjustment.
Тип гайки — Single, Double, or Cylindrical?
Single nut: compact, economical. FC and FY series for standard applications. Double nut (FYD, FYB): preload via spacer between two nuts — устраняет backlash and increases stiffness. Идеально для высокоточный machining. Cylindrical nut (FCD): integrated фланец design for тяжёлый machine tools where maximum жёсткость is essential. FCZ/FYZ: фланец nut variants for easy bolt-on mounting.
End Machining & Support Bearings
Ball screw ends can be machined to your specifications — standard journal, threaded, or keyed configurations. Support bearings (angular contact or ZKLF series) should be selected to match the screw diameter and осевая нагрузка. We offer complete ball screw + bearing support packages pre-assembled and tested for plug-and-play installation.
Ball Screw Classification
Understanding the key design parameters and manufacturing methods helps you select the optimal ball screw for your specific application requirements.
Classification by Ball Recirculation Type
External Recirculation
Balls return to the starting end through an external tube or дефлектор mounted outside the nut body. This design allows for a larger number of шариковая цепьs and higher грузоподъёмность. The трубка возврата is typically made of hardened steel or engineering plastic for smooth transition.
Internal Recirculation
Balls recirculate inside the nut body through internal passages or дефлекторs, resulting in a compact and streamlined nut profile. The internal design снижает overall dimensions, making it suitable for applications with limited installation space.
Classification by Nut Design
| Тип гайки | Описание | Typical Series | Key Benefit |
|---|---|---|---|
| Single Nut | One nut body with single шариковая цепь. Simple construction with standard backlash. | FC, FY, FYD | Cost-effective, compact |
| Double Nut (Преднатягed) | Two nuts with preload spacer or spring mechanism. Eliminates axial backlash for высокоточный двунаправленная positioning. | FCD | Zero backlash, maximum жёсткость |
| Flanged Nut | Nut body with integrated mounting фланец. Pre-drilled bolt pattern упрощает installation and alignment. | FYD, Select FY | Easy mounting, reduced assembly time |
| Cylindrical Nut | Smooth цилиндрическая гайка body. Retained by external корпус or bearing support. Most common industrial configuration. | FC, FY, FYB | Versatile, widely compatible |
Classification by Manufacturing Method
Ground Шарико-винтовые пары (ШВП)
C2, C3Precision-ground raceways using CNC thread grinding machines. Each screw is individually ground to achieve micron-level точность хода on the full travel length. Surface roughness typically Ra 0.2-0.4 um for ultra-smooth ball travel.
- Lead accuracy: 0.003-0.023mm per 300mm (C3)
- Идеально для CNC machine tools, CMM, semiconductor
- Series: FCD, FC, FCZ, FYB (C3)
Ground Шарико-винтовые пары (ШВП)
C2, C3Thread formed by precision CNC thread grinding on hardened легированная сталь screw blanks. Each screw is individually ground between centers to achieve точность хода of 0.003-0.023mm per 300mm. Surface finish Ra 0.2-0.4 um for ultra-smooth ball travel and long срок службы under continuous high-load operation.
- Lead accuracy: 0.003-0.023mm per 300mm (C2-C3)
- Идеально для CNC machine tools, semiconductor, precision stages
- Series: FCD, FC, FY, FYD, FYB (C2/C3)
Industries We Serve
Luoyang Songju ball screws power precision motion across a diverse range of demanding industries worldwide.
Станки с ЧПУ
Feed axes for обрабатывающий центрs, turning centers, grinding machines, and EDM. Ground C2/C3 screws ensure micron-level positioning accuracy for tight-tolerance machining.
Industrial Robots
Joint actuators for articulated robots, Cartesian gantry systems, and SCARA robots. High efficiency снижает motor size and energy consumption.
Semiconductor
Wafer handling stages, wire bonders, lithography positioning systems. Miniature FYB series with C3 accuracy for чистое помещениеs.
Aerospace
Flight control actuators, landing gear mechanisms, satellite deployment systems. High-reliability ground ball screws with full material traceability.
Medical Devices
CT scanner patient tables, surgical robots, diagnostic positioning systems. Smooth, silent operation with corrosion-resistant options available.
Automotive
Electric power steering, brake-by-wire actuators, production line transfer systems. ground C2/C3 screws for высокоточный, high-volume applications.
Printing & Packaging
Print head positioning, die-cutting presses, labeling machines. FYD фланецd-nut series for quick installation and reduced downtime.
Laboratory Automation
Liquid handling robots, sample positioning stages, microplate readers. FYB micro ball screws for compact precision mechanisms in lab instruments.
Series Руководство по выбору
Compare our five ball screw series side by side to find the best match for your application.
| Series | Diameter Range | Lead Range | Accuracy | Recirculation | Тип гайки | Best For |
|---|---|---|---|---|---|---|
| FCD | 16-80mm | 5-40mm | C2, C3 | External (Tube) | Double (Преднатягed) | CNC обрабатывающий центрs, zero-backlash |
| FC (FCZ) | 12-63mm | 4-32mm | C2, C3 | Internal (Deflector) | Single / Cylindrical | CNC feed axes, general precision |
| FY (FYZ) | 8-63mm | 4-40mm | C2, C3 | Internal | Single / Cylindrical | General CNC feed axes, automation |
| FYD | 15-50mm | 5-25mm | C3 | Internal | Single (Flanged) | Linear modules, quick-install |
| FYB | 8-25mm | 2-10mm | C2, C3 | Internal | Single (Cylindrical) | Miniature, semiconductor, medical |
Нужны Help Selecting a Ball Screw?
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