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Servomech - MA Model B travelling nut ACME screw jack

  • Up to 40% duty cycle
  • ACME screw from 18 to 100 mm
  • 5 to 350 kN load capacity
  • 8 sizes available

Product description

High efficiency screw jacks


Acme screw jacks recommended for intermittent duty cycle

Long life synthetic oil lubricated worm gear

High precision worm gearbox, ZI involute profile for reduced angular backlash

Gearbox ratio from 4:1 to 32:1

Gearbox housing shape for a better heat dissipation

Input speed up to 3.000 rpm

Acme screw drive, travelling nut (Model B)

Standard acme screw with 1 or 2 starts

Upon request 3 or 4 starts are available


MA Mod.B Series acme screw jacks with travelling nut:

8 sizes standard available

Acme screw from Ø 18 mm to Ø 100 mm

Load capacity from 5 kN to 350 kN


Available accessories:

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)

Trunnion mount

Protective bellows

Worm wheel rotation detector

Safety nut

Acme thread wear level check

Adjustable backlash


More option upon request, application dependant:

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


Part numbers

Parts Price Force max Max. speed
5000 N 50 mm/s
10000 N 50 mm/s
25000 N 50 mm/s
50000 N 50 mm/s
80000 N 64,3 mm/s
100000 N 75 mm/s
200000 N 75 mm/s
350000 N 75 mm/s



Technical data

Duty cycle 40 %
Force max 5000 N
Max. speed 50 mm/s
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