Hydraulic Strand Jacks
Strand jacks are widely recognized as the most sophisticated heavy lifting solution. They are used around the world whenever a conventional crane is not practical or economical. A strand jack system provides precise synchronous control with heavy lifting capacity in an economical, reliable, and compact footprint with capacities from 17 to 1,405 tons per jack. Engineered Rigging’s Strand Jack System can be controlled by a single operator from a central location which improves safety. We offer computerized control for up to 60 strand jacks simultaneously. Power is supplied by diesel or electric hydraulic power packs and a lifting anchor is provided. Strand Jack Systems are widely used in the oil and gas industry and are ideal for industrial plant maintenance projects, ports and construction sites that do not have the area needed to operate a large crane. Read about an innovative use of Engineered Rigging’s strand jacks in New Equipment Digest.

Strand Jack Features

Strand Jack 3530a SM
  • Enerpac strand jacks are powered by electrical or diesel driven hydraulic power packs and controlled by Enerpac’s proprietary SCC-Smart Cylinder Control System to ensure full control of lifting and lowering operations.
  • Precision control of synchronous lifting and lowering
  • Can be controlled by a single operator from a central location for increased safety
  • Automated locking - unlocking operation
  • Two strand sizes: 0.62 in (15.7 mm) and 0.71 in (18 mm)
  • Telescopic strand guide pipes prevent bird caging
  • Lifting anchor included with all strand jacks
  • Lloyds witness tested to 125% of maximum working load
  • Capacity is based on 2.5 minimum safety factor over strand breaking load

Strand Jacks At Work!

A dozen strand jacks were used to lower over 100 irregular loads at the Panther Island Bridges project in Ft. Worth, TX by Engineered Rigging’s client, Texas Sterling. Read More

How Does a Strand Jack Work?
Essentially, a strand jack is a linear winch in which a bundle of steel strands moves through a main lifting jack. Above and below the cylinder are anchor systems with wedges that grip the strand bundle simultaneously. Lifting and lowering a load is achieved by hydraulically controlling the main jack and two mini jacks (at the top and bottom) alternately. If the system loses pressure, the wedges automatically close, mechanically locking the load in place. This safety features eliminates the dangers associated with the suspended loads of cranes. Up to 60 strand jacks can be controlled simultaneously by a single operator. Is a strand jack the optimal lifting solution for your project? Eddy Kitchen can help identify the best heavy lifting equipment for your needs. Contact him at 1.804.814.4844 or eddy@engineeredrigging.com.

Strand Jack Systems

METRIC TONS (mtons)

STRAND DIAMETER (in)

MODEL NUMBER

NUMBER OF STRANDS

WEIGHT (lbs)

17

0.71

HSL1507

1

220

34

0.62

HSL3006

3

1,102

51

0.71

HSL4507

3

1,102

67

0.71

HSL6007

4

1,433

79

0.62

HSL7006

7

1,411

112

0.71

HSL10007

7

1,874

225

0.62

HSL20006

19

2,866

225

0.71

HSL20007

12

3,086

337

0.62

HSL30006

31

4,806

337

0.71

HSL30007

19

4,806

506

0.71

HSL45007

31

6,724

562

0.62

HSL50006

48

6,945

731

0.71

HSL65007

43

8,708

955

0.71

HSL85007

55

11,023

1,124

0.71

HSL100007

66

16,865

1405

0.71

HSL125007

84

18,298