New generation metal core breaking system
Gear deceleration ratio 1:4 can be choose.
The low stop of the winder ensure the one way work,and the high precision linear winder ensures a line of lifting,the spacial leaf-driving structure,ensuring that system is smooth and stable and good air tight.
The new type metal core brake system and one-way used winder can be extended to automatic descent system.
4.5*6 loop chain and 5mm loop cord is available.
The no-load tension is less than 0.5kg,max weight is 15kg,and the rising tension is less thsn 4kg,which make the labor saving to 80%.