SJ Mod.A Series Screw Jack

Acme screw jacks recommended for intermittent duty cycle
Long-life synthetic grease-lubricated worm gear
High precision worm gearbox, ZI involute profile
Gearbox ratio from 1:4 to 1:36
Monobloc gearbox housing, robust and compact shape
Input speed up to 1.500 rpm
Acme screw drive, travelling screw (Model A)
Acme screw 1- or 2-starts

1 – Acme screw made of stainless steel, C 43 (UNI 7847) Whirled thread
2 bronze travelling nut that has Fl ange
3 – worm shaft that has true involute grounded worm Profi Le ZI (UNI 4760)
4 Made of steel, case-hardened bronze worm wheel that is genuine involute profi le ZI (UNI 4760)
5 Cast iron support for the rim of the worm wheel made of bronze
6 – acme screw fixed to the worm wheel via LEFT-HAND (for the push load) or right-hand (for pulling load) thread metric
7 lock nut that is in the opposite direction of the metric thread to make sure that the screw is safe for xing
8 – Acme screw – worm wheel screws against screwing
9 Slotted spring pin
10 – thrust ball bearing to ensure large load capacity
11 monoblock gearbox
12 – threaded cover that has a guide for the acme screw. It can be utilized as a spigot diameter
13 – grub screws that stop the cover from unscrewing
14 – a guide to acme screw; could be employed as a spigot diameter
15 – long-lasting synthetic grease-lubricated worm gearbox
16 grease nipple
17 circular lubricant seal 18 O-Ring seals for lubricant