Scorpion Jacks

Scorpion Jacks is an Australian owned company specialising in Heavy Equipment Jacks and floor stand systems for the mining and civil construction industries.

The Scorpion range features heavy tonnage jacks and floor stands to suit all major brands such as Caterpillar, Komatsu, Hitachi, Terex, Leibherr. All major machine types are catered for including Rigid Body Trucks, Articulated Trucks, Loaders, Dozers, and more.

Scorpion Jacks are double-acting (power up and down) and come in single-stage, 2 stage telescopic, or multistage telescopic rod configurations. Tonnages are available in 25T, 50T, 100T, and 150T, with several models featuring load locking blocks.

Our mining jacks are the most durable on the market and offer safety, reliability, and manoeuvrability as their hallmarks. Scorpion Jacks can supply your complete jacking solution for your open cut, or underground mining application.

Additional information

Brands

Scorpion Jack

Jacks

MEJ Series

Model Capacity – Metric Tonnes / (Short Tonnes) Closed Height mm (Inches) Stroke mm (inches) Base Diameter mm (inches) Length mm (inches) Width mm (inches) Min handle height mm (inches)

Single Stage Series

MEJ50-9 50 (55) 422 (16.5/8) 237 (9.3/8) 455 (17.7/8) 2794 (110) 406 (16) 762 (30)
MEJ50-14 50 (55) 546 (21.1/2) 350 (13.3/4) 455 (17.7/8) 2794 (110) 406 (16) 762 (30)
MEJ50-18 50 (55) 654 (25.3/4) 450 (18) 455 (17.7/8) 2794 (110) 406 (16) 762 (30)

Two Stage Series

MEJ50-25 Stage 1: 50 (55) Stage 2: 25 (27.5) 422 (16.5/8) Stage 1: 232 (9.13) Stage 2: 196 (7.71) 455 (17.7/8) 2794 (110) 406 (16) 762 (30)

HEJ Series

Model Capacity – Metric Tonnes / (Short Tonnes) Closed Height mm (Inches) Stroke mm (inches) Base Diameter mm (inches) Length mm (inches) Width mm (inches) Min handle height mm (inches)

Single Stage Series

HEJ100L 100 (110) 467 (18.3/8) 267 (10.1/2) 394 (15.1/2) 2828 (111.5/16) 476 (18.3/4) 762 (30)
HEJ100 100 (110) 559 (22) 350 (13.3/4) 394 (15.1/2) 2828 (111.5/16) 476 (18.3/4) 762 (30)
HEJ150 150 (165) 559 (22) 350 (13.3/4) 432 (17) 2845 (112) 508 (20) 762 (30)

Two Stage Series

HEJ100-50 Stage 1: 100 (110) Stage 2: 50 (55) 590 (23.1/4) Stage 1: 350 (13.3/4) Stage 2: 292 (11.5) 394 (15.1/2) 2828 (111.5/16) 476 (18.3/4) 762 (30)
HEJ100-50L Stage 1: 100 (110) Stage 2: 50 (55) 473 (18.5/8) Stage 1: 231 (9.1/8)
Stage 2: 175 (6.7/8)
394 (15.1/2) 2828 (111.5/16) 476 (18.3/4) 762 (30)
HEJ150-80 Stage 1: 80 (88) Stage 2: 150 (165) 590 (23.1/4) Stage 1: 350 (13.3/4) Stage 2: 292 (11.5) 432 (17) 2845 (112) 508 (20) 762 (30)

ELP Series

Model Capacity – Metric Tonnes / (Short Tonnes) Closed Height mm (Inches) Stroke mm (inches) Base Diameter mm (inches) Length mm (inches) Width mm (inches) Min handle height mm (inches)
ELP25-4 25 (27.5) 250 (9.27/32) 350 (13.3/4) 406 (16) 2950 (116.1/8) 478 (18.7/8) 762 (30)
ELP25-5 25 (27.5) 256 (10.5/64) 440 (17.5/16) 457 (18) 2975 (117.1/8) 478 (18.7/8) 762 (30)
ELP50-3 50 (55) 250 (9.27/32) 264 (10.3/8) 406 (16) 2950 (116.1/8) 478 (18.7/8) 762 (30)
ELP50-4 50 (55) 250 (9.27/32) 350 (13.3/4) 457 (148) 2975 (117.1/8) 478 (18.7/8) 762 (30)

MLJ Series

Model Capacity – Metric Tonnes / (Short Tonnes) Closed Height mm (Inches) Stroke mm (inches) Base Diameter mm (inches) Length mm (inches) Width mm (inches) Min handle height mm (inches)
MLJ100-15 100 (110) 646 (25.1/2) 382 (15) 457 (18) 2870 (113) 457 (18) 762 (30)
MLJ100-26 100 (110) 940 (37) 660 (26) 533 (21) 2870 (113) 457 (18) 762 (30)

Safety Features

Extra Stability

Scorpion HEJ series jacks operate at just 3300 psi, which is one third of many of our competitor’s. At this pressure, the jacking cylinder bore must be considerably larger to generate the full capacity of the jack. The larger bore, rod and base plate make for extremely stable jacking. Scorpion’s patented trunnion mounting allows the jacking cylinder to free stand flat on the floor.

Greater Control

The use of double-acting jacking cylinder (including the telescopic models) gives greater control, particularly during descent. Counterbalance valves prevent “overrun” should the load try to descend faster than the pump can supply oil. This requires the jack to be powered down and prevents accidental lowering of the load.

Three-Way Overload Protection

An air pressure regulator is set to 90psi (96psi for HEJ150), the level required for maximum lift.
Installed directly after the regulator is an air pressure relief valve set to 95psi.
A hydraulic pressure relief valve is incorporated into the hydraulic circuit.

Low-Pressure Operation

Because Scorpion uses just one third of the pressure of many of their competitors the hydraulic components last longer and is less likely to fail suddenly. In the event of a catastrophic failure, there will be three times the oil to lose with only one third the pressure to force it out. The collapse rate of a Scorpion will be much slower than units working at 10,000psi.

Low Effort to Move and Position

The combination of large diameter wheels and pneumatic tyres, adjustable axle position, and adjustable handle not only reduce the effort required but, most importantly, eliminates strain on the operator’s back.

Simple Operation

A simple toggle switch (pneumatic valve) located well away from the load controls “UP-HOLD-DOWN”. Counterbalance valves prevent the load from creeping down during “HOLD” and require the jack to be powered down.

Load Holding Chocks for all new models

Design Features

Design features common to all models:

  • Unique trunnion mounting of jacking cylinder
  • Steel tube used throughout, no hydraulic hose
  • Adjustable wheel and handle position
  • Double-acting jacking cylinder
  • Provision for lifting dollies
  • Counterbalance valve prevents accidental retraction, jack must be powered down
  • Large diameter wheels and pneumatic tyres
  • Exceptional manoeuvrability
  • A protective covering of all air and hydraulic components
  • Large diameter, highly stable base on jacking cylinder
  • Fully welded, all steel, heavy-duty chassis
  • Air operated hydraulic pump
  • Full working capacity reached at 620kpa 90psi (96psi HEJ150 and HEJ150-80) air pressure
  • Simple “UP – HOLD – DOWN” control
  • Heavy-duty, all-welded, steel chassis forms the backbone of these incredibly rugged jacks.
  • All airlines are totally protected within the boxed steel handle.
  • Hydraulic steel tubes not located under the hinged cover are mounted well below the top of the chassis and behind the wheels for added protection.

Model Features

MLJ Series

  • Super Slim Design
  • Only 457mm (18″ wide) excluding the base plate, allows close positioning to the inside tyre
  • Once load chocks are placed around the rod the load is lowered on top of them. Tapered spigots top and bottom of the chocks provide perfect alignment with the jacking cylinder ensuring safe, secure locking of the load.
  • Forklift points make long-distance moving and/or loading a breeze. A lifting eye is also provided.

Use it as a stand

  • Lightweight aluminium load chocks (stroke locking blocks)
  • Allows jack to be locked at increments of 51mm (2 inches)
  • Load supported by a flange on the rod and not directly on the load itself
  • Meets standards for floor stand stability

ELP Series

Features especially for underground mining conditions

  • Extra-low closed height – 250mm (9.84″)
  • High lift – 4 and 5 stage jacks
  • Long reach – low profile of the jack extends 450mm (17.71″) from the tyres to the centre of the jack ram
  • High ground clearance for operating on mineshaft floors
  • Large diameter base for good stability on gravel floors
  • Boxed forklift points and folding handle for convenient underground transport

HEJ Series

  • Models available in single-stage and telescopic configuration.
  • Single-stage models feature a reliable, cost-effective design.
  • Telescopic models feature patented counterbalancing of the second stage meaning NO ROD SHUFFLE during extension or retraction.
  • All the original design features are present in these jacks and are available in standard and low profile models.

MEJ Series

  • Available in 3 single-stage options and one telescopic version.
  • Cylinder is actuated via hydraulic control valve.
  • Extra-large base plate for highly stable jacking.
  • Load holding blocks for single-stage models.
  • Fold-down handle for access in low clearance areas, or for extra reach.

SPJ Series

  • Designed for increased safety, greater efficiency, and lower downtime when changing out Draline swing pinion gears.
  • 3 Stage double-acting cylinder design
  • Rotating table for easy shaft and spine alignment
  • Cross Line relief valve to prevent over-pressurisation
  • Counterbalance valve protection against accidental retraction.
  • Highly stable air bearing base provides for easy lateral alignment

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