Construction hoist elevator SRIBS safety devices SAJ30 40 50 60
SAJ serials pinion and cone progressive safety device is the most important safety  device in the pinion and rack builders hoist, which can prevent the cage running  over speed, and effectively reduce the cage dropping accident.
The safety devices developed by Shanghai Research Institute of Building Sciences has passed through the evaluation presided by the Ministry of Construction in 1989. The specialists at the meeting made a high appraisal of reasonable compact structure, stable action speed, highly accurate calibration, safe and reliable, braking smoothly and light weight etc. features of the safety devices. 
The devices was recommended as  hightech products developed in National Eighth Five Year Plan by the Ministry of Construction, and also won the Shanghai excellent new product prize.

 The anti-drop safety devcie is consistent with China National Standards; also reach Hong Kong COP Standards and Europe EN Standards.
SAJ40-1.2 is one of safety devices for SC200/200. Other safety device including:
Top and bottom limit, cage door electrical and mechanical interlock safety device, landing door electrica and mechanical interlock, anti-exceeding top device, safety hook, anti-overload device, etc.
SC200/200 construction lifting hoist:
1.Cage capacity: 2000kg
2.Lifting speed: 33m/min
3.Mast section: painted or hot galvanized
4.Height: customized
5.Cage size:3.0x1.5x2.2
 
Anti-drop safety device are including:
SAJ30-1.2, SAJ30-1.4;
SAJ40-1.2, SAJ40-1.4;
SAJ50-1.2, SAJ50-1.4
ETC.