Trapezoidal screw jack - SJ model A

The compact series with travelling screw

The worm gear screw jacks in the SJ series with trapezoidal screw are suitable for general tasks with loads from 0.5 to 100 tons. Fourteen models are suitable for lifting loads from 5 to 1,000 kN, and the linear speeds can be up to 85.7 mm/s. The maximum duty cycle is up to 30 %, based on a period of 10 minutes. Depending on the load guidance and speeds, strokes of up to 6 m are possible.

The SJ worm gear screw jacks have a monobloc housing made of cast iron (except SJ05 and SJ10 made of aluminum). The square shape is particularly easy to install.

The SJ model A has a travelling screw.

Characteristics 

Trapezoidal spindle from Ø 18 mm to Ø 160 mm

Load capacity from 5 kN to 1,000 kN

14 standard sizes available

The worm gearboxes are available in reduction ratios from 1:4 to 1:36 and are lubricated for life with synthetic grease. The gearbox housing is cubic, robust and compact.

Input speed up to 1,500 min-1

Trapezoidal spindle 1 or 2 common

Available accessories (*):

Magnetic or inductive limit switches, adjustable on request

Incremental or absolute encoder for position control

Motor interface for electric motors (standard IEC connection. Customized connections by means of flange / motor holes possible on request)

Through-holes or threaded mounting holes, run-out protection, anti-rotation protection, protective tube, worm wheel rotation monitoring, swivel bearing plate, bellows, safety running nut, trapezoidal thread wear monitoring

Further options on request (*):

Trapezoidal screw and fastening connections made of stainless steel AISI 303, AISI 304, AISI 316

Lubricants for the food industry

Lubricants specifically for high or low temperatures

(*) Please check the compatibility and usability of the accessories with our application engineers.