SJ Mod.A Series

Compact design screw jacks

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

SJ Mod.A Series acme screw jacks with travelling screw:

14 sizes standard available
Acme screw from Ø 18 mm to Ø 160 mm
Load capacity from 5 kN to 1.000 kN

Available accessories (*):
Stroke length limit device (magnetic or inductive proximity)
On request, execution with axial adjustment of the proximity sensors position or angular position
Incremental or absolute encoder for positioning control
Prepared for IEC standard motors, AC or DC motors, and brushless servomotors (special motor flange adapter available upon request)
Screw jack housing fixing holes (threaded tapped holes on both housing fixing planes or through holes)
Stop nut device to prevent the ball screw travelling out of the screw jack housing
Protective tube
Anti-turn device
Trunnion mount
Protective bellows
Worm wheel rotation detector
Safety nut
Acme thread wear level check

More option upon request (*):
Fixing attachments in stainless steel AISI 303, AISI 304, on request AISI 316
Lubricants for high or low ambient temperature
Lubricants suitable for food industry

(*) Always check with our technical support the feasibility of the required option and accessories