MC classic screw jacks

dźwigniki śrubowe, przekładnie śrubowe, dźwigniki pomostowe, grob mc

14 size groups of worm screw drives with extendable screw or movable travel nut. Max. loads in the range of 50 kg – 200 tons. Max. lifting forces in the range of 5.0 – 2,000 kN. Special versions are possible for all environmental conditions and applications.

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MC classic screw jacks

  • The fundamental idea of converting rotary motion into linear motion using a worm wheel and a threaded rotating spindle, while achieving this within the smallest possible space, remains just as ingenious today as it was 40 years ago.

  • Since 1965, the standard Classic MC series screw jacks, with their traditional housing design, have been a crucial component in engineering and design offices. The concept of transforming rotary motion into linear motion using a worm gear and threaded spindle, and implementing this in a compact space, remains as brilliant today as it was back then.

  • The advantages of this lifting mechanism design lie in its ability to handle and transmit relatively high lifting and adjustment forces while forming a functional unit. This is achieved through the interaction of the worm gear as the driving element and a robust trapezoidal-threaded spindle as the output, combined with only three supporting elements and a solid bearing. A stable housing with additional spindle guidance completes the system.

  • The standard Classic MC series screw jacks are particularly suitable for tasks in electromechanical linear drive technology that involve medium to high axial forces, where the lifting frequency and lifting speed are not the determining factors.

  • Due to the design, no structural components can be attached to the housing.

Two design options are available:

  • With an extending spindle
  • With a traveling nut

Classic Screw Jacks MC Series – Technical Table

Type Max. Static Force Max. Static Load Spindle Size Gear Ratio Travel per Rev Gear Ratio Travel per Rev Max. Input Power ED = 20/10% Max. Input Torque
kN ton TR i mm/1obr i mm/1obr kW Nm
MC0,5 5 0,5 18 x 6 10:1 0,6 20:1 0,3 0,17/0,25 12,0
MC1 10 1,0 22 x 5 5:1 1,0 20:1 0,25 0,35/0,55 29,4
MC2 20 2,0 26 x 6 6:1 1,047 24:1 0,262 0,50/0,75 36,0
MC2,5 25 2,5 60 x 6 6:1 1,0 24:1 0,25 0,65/0,90 46,5
MC5 50 5,0 40 x 7 6:1 1,167 24:1 0,292 1,15/1,65 92,0
MC15 150 15 60 x 12 7:1 1,565 24:1 0,5 2,70/3,85 195
MC20 200 20 65 x 12 8:1 1,5 24:1 0,5 3,80/5,40 280
MC25 250 25 90 x 16 10:1 1,5 32:1 0,5 5,0/7,2 480
MC35 350 35 100 x 16 10:1 1,5 32:1 0,5 6,0/8,6 705
MC50 500 50 120 x 16 10:1 1,5 32:1 0,5 7,4/10,4 840
MC75 750 75 140 x 20 12:1 4,667 36:1 0,556 9,0/12,6 2660
MC100 1000 100 160 x 20 12:1 1,263 36:1 0,556 12,5/17,5 2660
MC150 1500 150 190 x 24 19:1 1,263 – – 18,5/26,0 4260
MC200 2000 200 220 x 28 17,5:1 1,6 – – – 4880

 

Accessories for Classic Screw Jacks MC

  • ES – Limit switches
  • FB – Bellows screw cover
  • SF – Spiral screw cover
  • BL – Mounting brackets
  • KP – Cardan plate
  • SFK – Rotating brackets for the cardan plate
  • New: Cardan joint with pin adapter
  • KAD/KAN – Cardan adapter for moving nut on the screw
  • MKS/MKN – Support bracket for moving nut on the screw
  • GX/GXZ – Flexible spacer shaft with claw couplings
  • ALRP – Aluminum spacer shaft with claw couplings
  • VR – Cardan spacer shaft with claw couplings
  • DIN736 – Bearing supports for spacer shafts
  • RP – Claw couplings
  • MG – Motor adapters
  • HR – Handwheels
  • Multi-shaft bevel gearboxes
  • Electric motors with brakes, fans, encoders, thermistors

Different Screw Jack Spindle Endings:

  • FP – Flange plate
  • FPL – Bearing-mounted flange plate
  • GE – Threaded shaft
  • GK – Male joint head
  • GS – Fork joint head
  • KGK – Ball joint head (versions A and B)
  • Z – Solid smooth shaft

Various Versions of Classic Screw Jacks MC:

  • Corrosion-resistant versions
  • Housing made of stainless steel (V2A/V4A)
  • Explosion-proof versions (Ex) for hazardous areas
  • Alternative lubrication options for screw gearboxes, e.g., oil

Screw Versions for MC Screw Jacks:

  • KGT – Ball screw
  • GRT – Threaded roller screw drive
  • WGT – Rolling ring screw drive
  • RPTS – Rolled precision lead screw
  • WTS – Whirled lead screw with a pointed end

Catalogs

katalog_GROB.pdf – Catalog, Chapter 4: Worm Screw Jacks MC by GROB

betriebsanleitung_hubgetriebe_classic_grund.pdf – Operating Manual for Worm Screw Jacks MC with Extending Screw by GROB

betriebsanleitung_hubgetriebe_classic_lauf.pdf– Operating Manual for Worm Screw Jacks MC with Traveling Nut by GROB​

4_MC_1509_7_DEEN-114_118.pdf – Inquiry Form for Worm Screw Jacks MC by GROB