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Schindler SK-250: Geared Traction Medium-Duty Dumbwaiter with Advanced Microprocessor Control
The Schindler SK-250 is a robust medium-duty dumbwaiter engineered for critical commercial applications, offering a 250kg load capacity and a swift 0.40 m/s speed. Utilizing a geared traction drive and microprocessor control, it ensures efficient, safe, and precise vertical material transport across 2 to 8 floors, primarily in hotels, hospitals, and commercial kitchens.
Quick Answer
The Schindler SK-250 provides a highly reliable and safe vertical transport solution through its durable SS 304 construction, advanced geared traction drive system, and comprehensive safety suite compliant with EN 81 / IS 14665 standards.
✓Advanced Geared Traction System: Ensures smooth, efficient, and precise 0.40 m/s operation with a robust 2.2 kW power unit and microprocessor-based control panel.
✓Superior Safety & Compliance: Integrates EN 81 / IS 14665 standards, comprehensive interlock systems, overload sensors, emergency alarms, and CE/ISO certifications for unparalleled operational security.
✓Durable & Hygienic Construction: Features SS 304 car material with a brushed finish, heavy-duty MS frame, steel rails, and a reinforced platform, ideal for demanding commercial environments like hospitals and kitchens.
The Schindler SK-250 is the gold standard for high-traffic environments like hospitals and hotels. Its 250kg load capacity and 800x800x1000mm SS 304 car handle bulky crates or medical supplies across up to 8 floors with ease. You'll appreciate the fast 0.40m/s speed and microprocessor control. Avoid this model if you lack three-phase 415V power or a 450mm pit; it’s too robust for simple residential use. For serious commercial logistics, this geared traction system is a reliable, professional-grade investment.
✓ Who Should Buy
- •Hotels and Resorts requiring efficient kitchen-to-room service or laundry transport.
- •Hospitals and Healthcare Facilities for sterile supply movement, waste management, or linen transport.
- •Commercial Kitchens and Restaurants needing rapid, hygienic transfer of food and supplies between levels.
- •Any commercial establishment requiring a reliable, medium-duty service lift compliant with international safety standards (EN 81 / IS 14665).
✕ Who Should Avoid
- •Residential properties or light-duty applications where a 250kg capacity is excessive and simpler, less robust systems suffice.
- •Industrial operations requiring significantly higher load capacities (e.g., above 250kg) or larger car dimensions than 800x800x1000mm.
- •Installations with severely restricted shaft dimensions, pit depth, or headroom that do not meet the 1500x1500mm shaft, 450mm pit, and 3000mm headroom requirements.
Product Overview
The Schindler SK-250 stands as a premier medium-duty dumbwaiter from the renowned SK Series, manufactured in Switzerland in 2021. Designed specifically for demanding environments such as hotels, hospitals, and commercial kitchens, this unit boasts a substantial 250kg load capacity within its 800mm (W) x 800mm (D) x 1000mm (H) stainless steel car. Its geared traction drive system delivers a consistent speed of 0.40 m/s, facilitated by a powerful 2.2 kW motor operating on a 415V, 50Hz three-phase supply. Capable of serving 2 to 8 floors with a maximum travel height of 20 meters, the SK-250 incorporates a microprocessor-based control panel for intelligent operation, including variable speed control, soft start/stop functionality, and precision leveling at each landing. The unit features vertical sliding doors, available in single or opposite opening configurations, crafted from durable SS 304. The overall construction emphasizes longevity and hygiene, with heavy-duty MS framing, steel rails, and a reinforced platform, ensuring reliable performance across its operational lifespan.
| Brand | Schindler |
| Model Name | SK-250 |
| Category | Dumbwaiter |
| Sub Type | Medium Duty Dumbwaiter |
| Series | SK Series |
| Model Year | 2021 |
| Country Of Origin | Switzerland |
| Intended Use | Hotels, Hospitals, Commercial Kitchens |
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Engineering Analysis
The Schindler SK-250's vertical transport mechanism is founded on a highly reliable geared traction drive system. This configuration leverages a 2.2 kW motor, optimally rated for 415V, 50Hz three-phase power, delivering controlled and efficient movement of the 250kg payload. The geared traction system, complemented by a counterweight, provides inherent efficiency and smooth acceleration/deceleration profiles, managed by a sophisticated microprocessor-based control panel. This control system facilitates variable speed control and soft start/stop functions, significantly reducing mechanical stress and improving cargo stability. Precision leveling is a critical feature, ensuring the car platform aligns accurately with floor levels, minimizing potential tripping hazards or damage during loading/unloading operations.
Safety protocols are deeply integrated, exceeding industry benchmarks with compliance to EN 81 / IS 14665 standards. A robust interlock system rigorously secures all vertical sliding doors, preventing operation unless fully closed and locked. Overload sensors prevent operation beyond the 250kg rated capacity, while additional safety sensors and an emergency stop button provide immediate operational cessation in critical situations. The system also includes a load balancing mechanism, further enhancing operational stability and safety, especially when handling unevenly distributed loads within the 800x800x1000mm car. Emergency features such as an alarm, emergency light, and power backup ensure continued functionality and user safety even during primary power interruptions. The entire assembly, weighing approximately 600kg, utilizes heavy-duty MS for the frame and steel rails with two heavy-duty guides, reinforcing its structural integrity for continuous commercial operation.
Technical Support & FAQs
Engineering Analysis
The Schindler SK-250's vertical transport mechanism is founded on a highly reliable geared traction drive system. This configuration leverages a 2.2 kW motor, optimally rated for 415V, 50Hz three-phase power, delivering controlled and efficient movement of the 250kg payload. The geared traction system, complemented by a counterweight, provides inherent efficiency and smooth acceleration/deceleration profiles, managed by a sophisticated microprocessor-based control panel. This control system facilitates variable speed control and soft start/stop functions, significantly reducing mechanical stress and improving cargo stability. Precision leveling is a critical feature, ensuring the car platform aligns accurately with floor levels, minimizing potential tripping hazards or damage during loading/unloading operations.
Safety protocols are deeply integrated, exceeding industry benchmarks with compliance to EN 81 / IS 14665 standards. A robust interlock system rigorously secures all vertical sliding doors, preventing operation unless fully closed and locked. Overload sensors prevent operation beyond the 250kg rated capacity, while additional safety sensors and an emergency stop button provide immediate operational cessation in critical situations. The system also includes a load balancing mechanism, further enhancing operational stability and safety, especially when handling unevenly distributed loads within the 800x800x1000mm car. Emergency features such as an alarm, emergency light, and power backup ensure continued functionality and user safety even during primary power interruptions. The entire assembly, weighing approximately 600kg, utilizes heavy-duty MS for the frame and steel rails with two heavy-duty guides, reinforcing its structural integrity for continuous commercial operation.