screw jack lift system, self jack system using screw jack,jack screw lift table  manufacturers, suppliers and factory in China.

screw jack lift system, self jack system using screw jack,jack screw lift table
 Efficiency
Two screw jack lift system, "L", I and T configuration,, transmission efficiency 95% 
Three screw jack lift system, I and T configuration, transmission efficiency 90%
Four screw jack lift system, H, U and T configuration, transmission efficiency 85%
Six screw jack lift system, 2H and U configuration, transmission efficiency 80%
Eight screw jack lift system, 2H and H configuration, transmission efficiency 80%
Notes: don't ignore miter gearbox efficiency 98%