Internal Шлифовальный шпиндель
120MD45Y15
High-speed internal grinding spindle engineered for precision bore machining. 45,000 RPM with 15 kW power and P4 bearings for consistent sub-micron accuracy.
120MD45Y15 Internal Шлифовальный шпиндель
The 120MD45Y15 is a compact, высокоскоростной internal grinding spindle engineered for precision bore grinding, hole machining, and bearing raceway grinding applications. Operating at 45,000 RPM with 15 kW of continuous power, this spindle обеспечивает the speed and accuracy required for producing mirror-finish internal surfaces in hardened steels, ceramics, and advanced alloys. Its slim profile design allows access to small-diameter bores while maintaining the stiffness needed for high material removal rates.
Built around a matched set of P4 precision angular contact шарикоподшипники in a permanent preload arrangement, the 120MD45Y15 поддерживает consistent geometric accuracy and vibration-free operation across its entire speed range. The oil-air micro-lubrication system обеспечивает precisely metered lubricant to each bearing, extending service intervals and maintaining optimal oil film thickness at all speeds. A spiral water-рубашка охлаждения integrated into the spindle корпус гарантирует thermal stability during extended grinding cycles, preventing the thermal drift that can compromise bore roundness and dimensional accuracy. Каждый шпиндель is индивидуально проверен for runout using laser interferometry, with maximum runout guaranteed not to exceed 0.001mm at the grinding wheel interface.
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| Speed (r/min) | 45000 |
| Мощность (kW) | 15 |
| Крутящий момент (Nm) | 3.2 |
| Интерфейс инструмента | Grinding wheel arbor (custom diameter) |
| Тип двигателя | High-frequency asynchronous motor |
| Тип подшипника | P4 Precision Радиально-упорные шарикоподшипники |
| Bearing Arrangement | Back-to-Back (DB) with spring preload |
| Биение Accuracy | ≤ 0.001mm at носик шпинделя |
| Охлаждение Method | Water-jacket cooling with liquid chiller |
| Смазка | Масляно-воздушная micro-lubrication (permanent grease optional) |
| Носик шпинделя | Threaded arbor mount (custom sizes available) |
| Максимальная скорость Factor (dmn) | 2.4 × 10⁶ mm·r/min |
| Housing Diameter | 120mm |
| Housing Length | ~460mm |
| Spindle Масса | ~38 kg |
| Интеграция датчиков | 2x PT100 датчик температурыs at front & задний подшипникs |
| Класс защиты | IP54 |
| Уровень шума | ≤ 68 dB(A) |
| Balancing Grade | G0.4 per ISO 1940-1 |
| Mounting Orientation | Horizontal (standard) / vertical available |
| Application | Internal bore grinding, bearing race grinding, small hole precision grinding |
Доступные опции и конфигурации
- Hybrid ceramic bearings (Si₃N₄ balls) for extended высокоскоростной life
- Permanent смазка пластичной смазкой for reduced maintenance
- Индивидуальная оправка шлифовального круга diameter and thread specification
- Front & rear PT100 датчик температуры integration
- Повышенная IP protection for coolant-heavy grinding environments
- Custom mounting фланец for specific grinder integration
Precision Engineering for Внутреннее шлифование
The 120MD45Y15 is purpose-built for the unique demands of internal bore grinding, where speed, accuracy, and compact form factor are equally critical.
45,000 RPM High-Speed Operation
Optimized for the small-diameter grinding wheels used in internal bore work, обеспечивая the surface speed needed for efficient material removal and fine finish quality.
P4 Прецизионные подшипники
ABEC 7 / P4 grade angular contact шарикоподшипники in a permanent preload configuration ensure minimal runout and maximum stiffness for precision bore geometry.
Масляно-воздушная Micro-Смазка
Precision oil-air delivery system meters exact lubricant quantities to each bearing, extending срок службы and maintaining optimal film thickness at high rotational speeds.
Integrated Water Охлаждение
Спиральная конструкция водяной рубашки поддерживает stable рабочая температура, preventing thermal drift that could compromise bore roundness during extended grinding cycles.
Dynamically Balanced Rotor
Each ротор assembly balanced to G0.4 grade for ultra-low vibration, essential for achieving mirror-quality surface finishes in bore grinding applications.
Compact Slim Design
Slim-profile spindle body allows access to small-diameter bores while maintaining the structural stiffness required for high material removal rates.
Individual Биение Verification
Каждый шпиндель undergoes laser interferometry testing before shipment, with a certified maximum runout of 0.001mm guaranteed at the grinding wheel mounting interface.
Custom Integration Support
Доступно с custom mounting фланецs, вал extensions, and sensor packages to match your specific grinding machine configuration.
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Discuss your internal grinding requirements with our engineering team. We will provide a complete spindle solution with pricing, delivery timeline, and technical support. 24-hour response guaranteed.