Linear technology Jacks Linear screw jacks with Acme thread MA and SJ series Acme screws (screw jacks)
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screw-jack-MA50-ModA

MA and SJ series Acme screws (screw jacks)

Screw jacks convert rotary motion generated by an electric, hydraulic or pneumatic motor (or manual operation) into linear motion in a vertical (push-pull lifting) or horizontal plane. Screw jacks can be installed as a standalone unit or in lifting systems with various layouts, connected by drive shafts, couplings and bevel gear sets. Screw jacks enable synchronised and constant movement in lifting systems, even under varying loads. Screw jacks can operate under both push and pull loads and are mounted vertically upwards, downwards or horizontally.

Acme screw jacks are ideal for industrial and automation applications in general and are used in a wide range of sectors such as heavy mechanical applications, steel mills, sheet metal production and processing, the production of tube and pipe, metal wire, marble, wood, stone, glass processing machines, printing and processing machines, presses for the production of rubber and plastic, telecommunications, the marine sector and railways. They are also suitable for applications in the food and beverage industry.

Details

Acme screw jacks are recommended for an intermittent duty cycle

Worm gear lubricated with synthetic oil
for a long service life. High-precision worm gear set, ZI-involute profile, reduced backlash
Gear ratio from 1:4 to 1:32
Gearbox housing shaped for better heat dissipation
Input speed up to 3,000 rpm
Acme screw drive, travelling screw (Model A)
Standard Acme screw single start or 2 starts
On request 3 or 4 starts are available

MA Mod A series Acme screw jack with travelling screw

8 sizes available as standard
Acme screw from Ø 18 mm to Ø 100 mm
Load capacity from 5 kN to 350 kN

MA Mod B series Acme screw jack with travelling nut

8 sizes available as standard
Acme screw from Ø 18 mm to Ø 100 mm
Load capacity from 5 kN to 350 kN

SJ Mod A series Acme screw jack with travelling screw

14 sizes available as standard
Acme screw from Ø 18 mm to Ø 160 mm
Load capacity from 5 kN to 1,000 kN

SJ Mod B series Acme screw jack with travelling nut
14 sizes available as standard
Acme screw from Ø 18 mm to Ø 160 mm
Load capacity from 5 kN to 1,000 kN

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