SAJ Construction Hoist Safety Device

Our SAJ Series Over-speed Safety Device is a vital safety spare part for construction passenger and material hoists, designed to prevent sudden cage falls due to over-speed failures. As a purely mechanical safety brake, it acts as the last line of defense for vertical construction transport equipment. It is widely used in building hoists on high-rise construction sites, urban renovation projects, and infrastructure developments.

The SAJ Series Over-speed Safety Device for Construction Hoist runs purely by mechanical structure, no electric or hydraulic controls required. It stays reliable even when site power cuts out suddenly.

It detects over-speed automatically and brakes right away, stopping cage free fall and reducing impact damage. It uses steady friction braking to prevent rebound, plus a power cut function to avoid extra safety risks.

Made of heavy-duty metal, this safety device withstands dust, vibration and long daily use on construction sites. We have multiple models for easy installation and routine maintenance, compatible with most mainstream construction hoist brands. All units follow strict safety standards and pass full load and safety tests before shipment.