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★floating gripping guarentees stable breaking performance of safety gear
| Rated speed(m/s) | Acting speedof governor(m/s) | Permitted P+Q(kg) | Rail width(mm) | External dimension (LxWxH)(mm) |
Certifcation |
| 0.25~2.5 | 0.29~3.23 | 950~3200 | 10,15.88, 16 | 148x63.5x183 | GB/CE |
Progressive Safety Gear for High-Speed Elevators - Reliable Overspeed Protection
What is Progressive Safety Gear?
Progressive safety gear is a critical braking system designed for high-speed elevators (typically above 0.63 m/s). Unlike instantaneous safety gear, it applies gradual, controlled braking force to prevent sudden jolts, ensuring passenger safety and comfort during an emergency stop.
How Does Progressive Safety Gear Work?
Governor Detection: The governor senses overspeed (usually 115-140% of rated speed).
Mechanical Activation: The governor rope locks, triggering the safety gear linkage.
Gradual Braking: Wedges or jaws engage the guide rails progressively, increasing friction for a smooth, controlled stop.
Key Benefits
Smoother Deceleration - Reduces G-forces for passenger safety.
Ideal for High Speeds - Used in modern, fast elevators (≥1 m/s).
Code-Compliant - Meets ASME A17.1, EN 81-20/50 standards.
Durable & Low Maintenance - Engineered for long-term reliability.
When is Progressive Safety Gear Required?
High-rise buildings with elevators exceeding 0.63 m/s (125 ft/min).
Applications where passenger comfort during emergency stops is critical.
Modern traction elevators with variable frequency drives (VFDs).
Maintenance & Testing
Annual load testing by certified technicians.
Lubrication & inspection to prevent sticking.
Governor rope tension checks for reliable activation.
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