hand wheel manual machine screw jacks for raise and lower Louver Damper, such as inlet louver damper, outlet louver damper and bypass damper. Required: 1. Manual operation inlet louver damper and outlet louver damper, inverted mounted, 800kg loads, travel stroke 500mm, clevis end fitting, hand wheels/crank, bellows boot, protective pipe. 2. Manual operation bypass damper, inverted mounted, 1200kg loads, travel stroke 1000mm, clevis end fitting, hand wheels/crank, bellows boot, protective pipe. Design Solutions 1. Manual operation machine screw jacks model JT-3T-IS-600-M-II-C-HW/BB/PP, machine screw diameter 32mm, pitch 6mm, 3 ton static load capacity, inverted mounting, translating screw type, exact 500mm stroke except bellows boot full retract length, medium worm gear ratio 12:1, 0.5mm travels per turn of worm shaft, clevis end fittings, double worm shaft input type, additional accessories 8" (200mm) diameter hand wheels/crank, bellows boot and protective pipe for dust-proof and rust-proof of machine screw. 2. Manual operation machine screw jacks model JT-5T-IS-1200-M-II-C-HW/BB/PP, machine screw diameter 38mm, pitch 6mm, 5 ton static load capacity, inverted mounting, translating screw type, exact 1000mm stroke except bellows boot full retract length, medium worm gear ratio 12:1, 0.5mm travels per turn of worm shaft, clevis end fittings, double worm shaft input type, additional accessories 12" (300mm) diameter hand wheels/crank, bellows boot and protective pipe for dust-proof and rust-proof of machine screw.

1. Screw Jack Application Cases
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Hand Wheel Manually Operated Machine Screw Jack For Raising And Lowering
Louver Damper
Hand Wheel Manually Operated Machine Screw Jack For Raising And Lowering Louver Damper, such
as inlet louver damper, outlet louver damper and bypass damper.
Required:
1. Manual operation inlet louver damper and outlet louver damper, inverted mounted, 800kg loads, travel
stroke 500mm, clevis end fitting, hand wheels/crank, bellows boot, protective pipe.
2. Manual operation bypass damper, inverted mounted, 1200kg loads, travel stroke 1000mm, clevis end
fitting, hand wheels/crank, bellows boot, protective pipe.
Design Solutions
1. Manual operation machine screw jacks model JT-3T-IS-600-M-II-C-HW/BB/PP, machine screw
diameter 32mm, pitch 6mm, 3 ton static load capacity, inverted mounting, translating screw type, exact
500mm stroke except bellows boot full retract length, medium worm gear ratio 12:1, 0.5mm travels per
turn of worm shaft, clevis end fittings, double worm shaft input type, additional accessories 8" (200mm)
diameter hand wheels/crank, bellows boot and protective pipe for dust-proof and rust-proof of machine
screw.
2. Manual operation machine screw jacks model JT-5T-IS-1200-M-II-C-HW/BB/PP, machine screw
diameter 38mm, pitch 6mm, 5 ton static load capacity, inverted mounting, translating screw type, exact
1000mm stroke except bellows boot full retract length, medium worm gear ratio 12:1, 0.5mm travels per
turn of worm shaft, clevis end fittings, double worm shaft input type, additional accessories 12" (300mm)
diameter hand wheels/crank, bellows boot and protective pipe for dust-proof and rust-proof of machine
screw.