|Rated braking load||30KN||40KN||50KN||60KN|
|Rated movement speed||0.95m/s, 1.2m/s, 1.4m/s, 1.6m/s, 2.0m/s and so on|
|Number of teeth||15 or 12|
1. We use internal brake drum and centrifugal governor and adopt forge die process instead of traditional casting process in order to keeping away from potential security problems.
2. Safety device is consistent with China National Standards, Hong Kong COP Standards and Europe EN Standards.
3. The safet devices are developed by Shanghai Research Institute of Building Sciences(SRIBS). It has passed through the evaluation presided by the Ministry of Construction in 1989. Now the device is recommended as high-tech products developed in National Eighth Five Year Plan by the Ministry of Construction, and also won the Shanghai excellent new product prize.
4. The safety device is made of sliding bearing manufactured by China leading company and Changcheng’s high-quality grease selected specially. There is one more grease groove designed purposely in gear shaft. Meanwhile, there is unique silencer and shock-absorber to reduce voice as far as possible.
5. The spring parts and frictions are produced by our country company which manufactures specifically. Therefore the brake torque and open speed are stead. What’s more, safety device can react fast and brake smoothly.