RN-0.5ton, RN-1 ton, RN-2 ton, RN-3 ton, RN-5 ton, RN-10 ton, RN-15 ton, RN-20 ton, RN-30 ton, RN-40 ton, RN-50 ton, RN-100 ton.
Worm Gear Screw Jack Application Notices:
* Screw jack must not be overloaded
* Trapezoidal screw jack input revolutions can not exceeded 1800 RPM.
* It is necessary to select larger model under having side thrust.
* The base,on which the jacks are mounted,should be strong enough to carry the max. load and should be rigid enough to prevent swings or turns on the supporting beam of the jack.
* When mounting it is necessary to make sure that the jacks are carefully adjusted and that the connecting shafts and the worm shafts are exactly aligned.The lifting screw or safety nut must be carefully aligned to prevent radial forces on the lifting screw.When jack,shafts,gearboxes etc. have been connected it should be possible to turn the main driving shaft by hand(provided that the jacks are unloaded).If there are no signs of seizure or misalignment,the lifting systems is now ready for normal operations.
* The screw jacks should have a longer length of stroke than is actually required.Should it be necessary to use total length of stroke,this must be done carefully.It is important that the lifting screws of the jacks are not screwed beyond the closed height,otherwise the worm gear should be severly damaged.
* Long distance between jack and jack such as 2500 mm or more than,if have enough space,it is better to add a jack or more,if not,need to add extra bearing blocks.
* Screw Jacks&Right Angle Spiral Bevel Gearbox Working Temperature?
Screw Jack: -20 ~ + 80 degree centigrade
Right Angle Spiral Bevel Gearbox: -20 ~ + 80 degree centigrade
* When change Screw Jack’s grease&Right Angle Spiral Bevel Gearbox’s Gear Oil?
Screw Jack: First time,after 300 hours working time,next lubrication,each 1000 hours.
Right Angle Spiral Bevel Gearbox: Each 500 hours
* The Type of Screw Jack Grease&Right Angle Spiral Bevel Gearbox Oil?
Screw Jack Grease: Grease No.2
Right Angle Spiral Bevel Gearbox Oil: HD320-680
