Что такое прецизионный шлифовальный шпиндель?
Шлифовальный шпиндель — это ультрапрецизионный моторизованный шпиндель specifically engineered for surface, cylindrical, internal bore, and centerless grinding operations. Unlike milling spindles that prioritize tool-changing speed, grinding spindles are optimized for extreme rotational accuracy, vibration-free operation, and consistent performance under continuous duty cycles — often running for hours on a single workpiece.
Luoyang Songju производит прецизионные шлифовальные шпиндели в 11 стандартных моделях: наружного (7 models) and internal (4 models) configurations. Мощность range 1.5–52.5 kW, speeds from 5,000 to 120,000 RPM. All spindles use minimum P4 precision bearings, are динамически сбалансирован до G0.4 per ISO 1940-1, and undergo individual runout verification with laser interferometry. Ceramic hybrid bearing upgrades and custom wheel arbor interfaces available.
G0.4 Balanced
Highest ISO balance grade, ultra-low vibration
Биение 0,001 мм
Laser-verified at wheel arbor
Подшипники P4/P2
Tandem-O arrangement for grinding жёсткость
ISO 9001:2015
Certified quality management
Прецизионные
Шлифовальные шпиндели
11 моделей | 1.5–52kW | Up to 45,000 RPM | External & Internal Types
Ультра-прецизионные шлифовальные шпиндели для плоского, круглого и внутреннего шлифования. Спроектированы с подшипниками P4/P2 и роторами с балансом G0.4 для субмикронной точности биения и высочайшего качества поверхности.
Наружное и универсальное шлифование — 7 моделей
Специализированные шпиндели наружного шлифования для круглого шлифования валов, валков и вращающихся компонентов. Высокая жесткость для тяжелого съема материала с превосходной круглостью и прямолинейностью. Все три модели оснащены синхронными двигателями и большим диаметром круга до 600 мм для самых сложных операций наружного шлифования.
250MD06G32
170MD05G14B
155MD06G19
Внутреннее и универсальное шлифование — 7 моделей
Полный спектр шпинделей для внутреннего и универсального шлифования: шлифование отверстий, дорожек качения, микроотверстий и специальные применения. Скорости от 6 000 до 120 000 об/мин в 7 моделях, включая высокочастотные, ременные и синхронные типы. Микросмазка масляным туманом — стандарт на всех высокоскоростных моделях. Гибридные шлифовально-фрезерные шпиндели HC63/HC80 для универсального шлифования и легкой обработки.
120MD45Y15
100MD60Y7.5
100MD90Y2.5
80MD120Y1.5
170MD30Y20 HC63
170XDJ12G40 HC80
150MD35Y32
Типы и технологии шлифовальных шпинделей
Понимание различий между конфигурациями наружных и внутренних шлифовальных шпинделей
Шпиндели наружного шлифования
Предназначено для cylindrical grinding of валs, rolls, and rotating components. Larger корпус (155–250mm), higher power (14–52.5kW), and large wheel capacity (up to 600mm). High stiffness for heavy stock removal with superior roundness and straightness. Synchronous motor types provide constant speed for consistent surface finish across long workpieces. 7 standard models.
Шпиндели внутреннего шлифования
Compact, высокоскоростной spindles for bore grinding, bearing race grinding, and micro-hole finishing. Slim profile (80–120mm корпус) for access to small-diameter bores. Speeds from 45,000 to 120,000 RPM using high-frequency asynchronous motors. Oil-air micro-lubrication is standard for reliable ultra-высокоскоростной bearing operation. 4 standard models.
G0.4 Precision Balancing
G0.4 is the highest balance grade per ISO 1940-1, allowing maximum residual unbalance of 0.4 mm/s. In grinding, residual unbalance directly transfers to the workpiece surface as waviness and chatter. Every Luoyang Songju grinding spindle is individually balanced and certified to G0.4, producing vibration amplitudes typically below 0.5 μm at operating speed.
Масляно-воздушная Micro-Смазка
Standard on all internal grinding spindles and optional on external types. Precisely metered oil droplets are delivered to each bearing via compressed air, maintaining optimal oil film thickness at all speeds. Compared to grease: extends bearing life 30–50% at high speeds, снижает рабочая температура, and позволяет the 45,000–120,000 RPM speeds required for small-diameter internal grinding wheels.
Wheel Arbor Interfaces
Шпиндели наружного шлифования используют индивидуальные оправки, фланцы HSK (HC63/HC80/HC100) или конические крепления под конкретные размеры круга. Шпиндели внутреннего шлифования используют резьбовые оправки для малоразмерных кругов. Все интерфейсы шлифуются на месте после сборки для гарантии концентричности. Возможны индивидуальные спецификации оправок для нестандартных кругов.
Thermal Stability
Thermal growth during extended grinding cycles is a primary cause of dimensional drift. Our spiral water-jacket cooling design поддерживает stable spindle temperature within ±2°C. Встроенный PT100 sensors provide real-time temperature data. For ultra-precision applications, we recommend external chiller systems with ±0.5°C control accuracy to virtually eliminate thermal effects on workpiece geometry.
Почему выбирают Our Шлифовальные шпиндели
Разработано для the most demanding surface finish requirements in modern manufacturing
Sub-Micron Surface Finish
G0.4 balanced роторs with P4/P2 precision bearings achieve surface roughness Ra 0.05–0.2 μm on hardened steels. Vibration amplitudes below 0.5 μm at operating speed ensure mirror-quality surface finishes. Каждый шпиндель undergoes individual runout verification with laser interferometry before shipment.
До 120 000 об/мин
Шпиндели внутреннего шлифования работают на скоростях от 45 000 до 120 000 об/мин, обеспечивая поверхностную скорость для малоразмерных кругов для эффективного съема материала. Высокочастотные асинхронные двигатели с масляно-воздушной смазкой обеспечивают надежную непрерывную работу на экстремальных скоростях.
Высокая жесткость для тяжелого шлифования
Tandem-O bearing arrangements in external spindles provide exceptional radial and axial жёсткость. The 250MD06G32 обеспечивает 51 Nm of continuous torque for aggressive stock removal with 600mm wheels. Robust корпус designs (легированная сталь 42CrMo4) dampen vibration and maintain geometric accuracy under heavy grinding loads.
Extended Service Intervals
Пластичная смазка-lubricated external spindles: 2,000–3,000 hour relubrication intervals. Oil-air internal spindles: continuous metered lubrication with 6-month oil filter changes. Ceramic hybrid bearing option extends срок службы 30–50%. Properly maintained spindles routinely achieve 10,000+ operating hours before bearing service.
100% Pre-Shipment Verification
Every grinding spindle undergoes comprehensive testing: runout measurement (laser interferometry), спектральный анализ вибрации (FFT), temperature rise test under load simulation, wheel arbor concentricity check, coolant passage integrity verification, and испытания на полной скорости. Certified test report and inspection video provided.
Индивидуальные решения Support
Custom wheel arbors, specialized bearing configurations, unique mounting фланецs, and application-specific cooling designs. Наша инженерная команда рассматривает your grinding machine specifications and workpiece requirements to deliver a spindle optimized for your exact process. CAD data (STEP/DWG) provided for integration verification.
How to Select a Precision Шлифовальный шпиндель
Six key parameters to specify for optimal grinding performance
External or Внутреннее шлифование?
External grinding spindles: For cylindrical, surface, and universal grinding. Larger корпус diameters (155–250mm), higher power (14–52kW), and large wheel capacity (up to 400mm). 7 models available. Internal grinding spindles: For bore grinding, bearing race grinding, and small hole precision work. Compact (80–120mm корпус), высокоскоростной (45,000–120,000 RPM), lower power (1.5–15kW). 4 models available. Select based on your workpiece geometry and required surface finish.
Grinding Wheel Speed (RPM & Surface Speed)
Grinding wheel surface speed (m/s) = π × wheel diameter (m) × RPM ÷ 60. Standard vitrified wheels: 33–45 m/s. CBN wheels: 60–120 m/s. Diamond wheels: 25–50 m/s. For a 400mm wheel at 33 m/s, you need ~1,575 RPM. For a 60mm internal wheel at 60 m/s, you need ~19,000 RPM. Match spindle RPM to your wheel specifications and desired surface speed for optimal grinding performance.
Мощность (kW) — Material Removal Rate
лёгкие finishing / small parts: 1.5–7.5kW (80MD120Y1.5, 100MD60Y7.5). средние production grinding: 14–20kW (170MD05G14B, 155MD06G19, 170MD30Y20). Heavy stock removal / large parts: 32–52kW (150MD35Y32, 250MD06G32, 170XDJ12G40, 190XDJ08G52.5). Higher power позволяет higher downfeed rates and shorter cycle times. Match to your production volume targets.
Bearing Precision — P4 or P2?
All Luoyang Songju grinding spindles use minimum P4 (ABEC-7) grade angular contact шарикоподшипники. For ultra-precision applications requiring surface roughness Ra < 0.1μm and roundness < 0.5μm, we offer P2 (ABEC-9) ceramic hybrid bearing upgrades. Ceramic bearings (Si3N4 balls with steel races) reduce centrifugal load at high speed, generate less heat, and extend lubrication intervals. Контакты our engineers to discuss your surface finish requirements.
Смазка — Пластичная смазка or Масляно-воздушная?
Пластичная смазка lubrication: Standard on most external grinding spindles. Maintenance-free for normal duty cycles. Adequate for speeds up to ~15,000 RPM with standard bearings. Oil-air micro-lubrication: Required for speeds above 15,000 RPM and high-duty-cycle production. Delivers precisely metered oil to each bearing, maintaining optimal film thickness. Standard on all internal grinding spindles (45,000–120,000 RPM operation demands oil-air). Extends bearing life by 30–50% compared to grease in высокоскоростной applications.
Balancing & Биение Requirements
All Luoyang Songju grinding spindles are динамически сбалансирован до G0.4 per ISO 1940-1 (the most stringent balance grade). Биение is guaranteed ≤ 0.001mm at the grinding wheel mounting interface, measured by laser interferometry and documented in the inspection certificate. Для применений with extended grinding wheel arbors or special wheel adapters, we recommend on-machine balancing systems. Наша инженерная команда может advise on compatible dynamic balancing equipment for your specific setup.
Industries & Use Cases
Precision grinding spindles are critical to achieving the surface finish and dimensional accuracy demanded by modern manufacturing
Bearing Manufacturing
Internal and external raceway grinding for шарикоподшипники, roller bearings, and подшипник скрещенных роликовs. Our internal grinding spindles at 60,000–120,000 RPM produce the sub-micron raceway geometry required for P4/P2 precision bearing performance.
Automotive Components
Crankвал journals, camвал lobes, transmission валs, CV joint races. External cylindrical grinding spindles with large wheel capacity handle high-volume automotive production with consistent roundness and surface finish across long production runs.
Aerospace
Turbine вал journals, landing gear pins, hydraulic actuator bores. Ultra-precision internal and external grinding of hardened aerospace alloys (Inconel, titanium) requires the жёсткость and thermal stability our spindles provide.
Machine Tool Building
Spindle cartridge grinding for CNC lathes and обрабатывающий центрs. Guideway and ballscrew grinding for machine tool assembly. Our spindles are used by machine tool builders worldwide for both production and in-house component manufacturing.
Medical Devices
Orthopedic implant bearing surfaces (hip, knee), surgical instrument finishing, dental implant components. Mirror-quality surface finishes on cobalt-chrome and titanium alloys demand the ultra-low vibration and precision our spindles deliver.
Hydraulics & Fluid Мощность
Hydraulic cylinder bores, pump корпусs, valve spools and bodies. Internal grinding of precision bores with stringent roundness and surface finish requirements for sealing performance. Our internal spindles excel in these demanding bore-finishing applications.
Custom Шлифовальный шпиндель Manufacturing
Grinding applications often require spindle configurations that go beyond standard catalog specifications. We offer comprehensive custom engineering services to match your specific grinding machine, workpiece geometry, and surface finish requirements.
Custom Wheel Arbors
Threaded, tapered, HSK, or фланец interfaces machined to your wheel specifications
Bearing & Смазка Options
P2 ceramic hybrid, custom preload, oil-air, oil-mist, or permanent grease
Machine-Specific Mounting
Custom корпус diameters, фланец patterns, and bolt circles for retrofit or new-build integration
Application-Specific Balancing
Balancing with wheel mounted, multi-plane balancing for extended arbors
Standard Customization Options
Шлифовальный шпиндель FAQ
What surface finish can I achieve with Luoyang Songju grinding spindles?
With proper wheel selection and process parameters, our G0.4 balanced grinding spindles with P4/P2 bearings can achieve surface roughness Ra 0.05–0.2μm (mirror finish) on hardened steels. The key factors: spindle balance quality (G0.4), bearing precision (P4 minimum, P2 for ultra-finishing), wheel dressing technique, and coolant delivery. Our 120MD45Y15 and 80MD120Y1.5 internal grinding spindles, operating at 45,000–120,000 RPM with масляно-воздушная смазка, are specifically engineered for sub-0.1μm Ra bore finishing.
Why is G0.4 balance important for grinding spindles?
G0.4 is the highest balance grade per ISO 1940-1, allowing a maximum residual unbalance of 0.4 mm/s (mm/s of the center of gravity at service speed). In a grinding spindle, residual unbalance directly transfers to the workpiece surface as waviness and chatter marks. A G0.4 balanced spindle at 6,000 RPM produces vibration amplitudes typically below 0.5μm — essentially imperceptible in the finished surface. Lower balance grades (G1.0, G2.5) can leave visible chatter patterns on ground surfaces. Every Luoyang Songju grinding spindle is individually balanced and certified.
Can grinding spindles be used for milling operations?
Our 170XDJ12G40 HC80 and 190XDJ08G52.5 HC100 are hybrid grinding/milling spindles specifically designed for both operations. Standard grinding spindles are optimized for radial grinding loads and may not have the axial stiffness required for heavy milling. For occasional light milling with small tools, a grinding spindle can function, but for dedicated milling, we recommend our CNC electrospindle series which feature тяговый шток clamping systems, tool taper interfaces (BT/HSK), and bearing arrangements optimized for combined axial/radial milling loads.
How often should grinding spindle bearings be regreased?
Пластичная смазка-lubricated grinding spindles: regrease every 2,000–3,000 operating hours under normal conditions. High-duty-cycle production may require regreasing every 1,000–1,500 hours. Oil-air lubricated spindles: the metering system runs continuously — check oil reservoir level weekly and replace oil filter elements every 6 months. We provide spindle-specific lubrication schedules with each shipment. Proper lubrication is the single most important factor in spindle bearing life — under-lubrication causes wear; over-lubrication causes heat buildup and grease churning losses.
What information do you need to quote a grinding spindle?
For accurate quotation, please provide: (1) Grinding type (external/internal/surface/universal), (2) Workpiece material and hardness, (3) Required surface finish (Ra in μm), (4) Grinding wheel dimensions (OD × width × bore), (5) Required wheel speed (RPM or m/s), (6) Machine make/model for integration verification, (7) Production volume (parts/hour or annual quantity). Наши инженеры порекомендуют the optimal spindle model and configuration. Typical quotation turnaround: 24–48 hours.
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