Rigging is one of the most technically demanding operations in industrial work, and one of the least understood by the people who commission it.
When a manufacturing plant relocates a press line, when a factory installs a new production line section, when a facility decommissions an overhead crane or positions a multi-tonne machine tool into a precision foundation, rigging is the discipline that makes it physically possible. It is the engineering practice of lifting, lowering, and moving loads that cannot be moved any other way.
Done correctly, rigging is invisible. The equipment moves. It arrives where it needs to be. Production resumes. Done incorrectly, the consequences (to equipment, to structure, to personnel) can be severe and irreversible.
This is why industrial rigging services exist as a regulated, certified discipline rather than a general construction activity. Here is what that discipline actually involves.
What Is Industrial Rigging?
Industrial rigging is the process of attaching, lifting, and moving heavy equipment or structural loads using mechanical systems like cranes, hoists, hydraulic gantries, strand jacks, wire ropes, slings, and associated hardware. In an industrial context, rigging supports a wide range of operations:
- Lifting and positioning manufacturing machinery during installation or relocation
- Moving heavy equipment within a facility where overhead space or access is restricted
- Loading and unloading oversized plant onto transport vehicles
- Positioning production line components to precise installation tolerances
- Lifting structural elements during facility construction or modification
- Lowering equipment into pits, basements, or below-grade installations
- Extracting equipment from difficult or confined locations for maintenance or removal
The defining characteristic of rigging work is that it involves loads where failure is not recoverable. A dropped industrial press, a structural member that shifts under load, a sling that parts under tension — these are not incidents that can be undone. This is why the engineering, certification, and method planning requirements for rigging work are more stringent than almost any other industrial activity.
How Industrial Rigging Works — The Core Components
Load Assessment
Every rigging operation begins with an accurate assessment of the load. Not an estimate, but a verified figure. The weight of industrial machinery is often different from nameplate data. Fluid content, attached tooling, embedded foundations, and modifications made since original installation all affect actual weight. Where scale measurement is not possible, weight is calculated from drawings and material densities, with a safety factor applied.
The load’s centre of gravity is equally important. A machine that is heavier on one end (which describes most machine tools, presses, and process vessels) requires an asymmetric rigging arrangement to lift level. An incorrect centre of gravity assumption results in a load that tilts when lifted, overloading one side of the rigging system and potentially causing a sling failure or uncontrolled movement.
Rigging Plan and Lift Plan
For any significant lift, a written lift plan is prepared before work starts. The lift plan specifies:
- Total load weight with safety factor applied
- Identified lift points, verified against manufacturer lifting diagram or engineering calculation
- Rigging configuration like sling type, size, angle, and rated capacity
- Lifting equipment to be used (crane, gantry, hoist) with rated capacity confirmation
- Ground bearing capacity at crane set-up positions
- Exclusion zones during the lift
- Communication method between lift team members
- Contingency procedure if the lift does not proceed as planned
The lift plan is not bureaucracy. It is the document that converts an improvised operation into an engineered one. Any rigging company that does not produce lift plans is operating below professional standard, regardless of how much experience they claim.
Rigging Hardware and Sling Selection
The connection between the lifting equipment and the load is made through rigging hardware like wire rope slings, chain slings, synthetic webbing slings, shackles, hooks, lifting beams, and spreader bars. Every component in the rigging system has a rated working load limit. The weakest component defines the capacity of the entire system.
Sling angle matters significantly. A sling at 60 degrees from horizontal carries 87% of its rated vertical capacity. At 30 degrees, that drops to 50%. Industrial riggers calculate the actual load on each sling leg based on the angle and the load geometry, then select hardware with sufficient rated capacity to accommodate those forces. Rigging selected based on load weight alone, without accounting for sling angles, is systematically under-rated.
If you’re planning a lift and want to avoid costly miscalculations, our engineers can review your setup before anything moves.
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Crane and Lifting Equipment Selection
Industrial rigging operations use a range of lifting equipment depending on site conditions, load weight, and available access:
Mobile Cranes
Mobile cranes are the most flexible option for outdoor lifts and for loads that must travel horizontally as well as vertically. Modern mobile cranes are available in capacities from a few tonnes to several hundred tonnes. Crane selection is based on maximum lift radius, required lifting height, ground conditions, and access constraints. Every mobile crane operation requires a load chart verification confirming that the crane’s rated capacity at the operating radius exceeds the load weight with margin.
Overhead Bridge Cranes
This type of crane offers a fixed lifting path in industrial facilities along the crane’s runway. Where facilities have in-house overhead cranes, rigging operations can use them for internal machine moves — but only after confirming that the crane’s capacity and condition are adequate for the planned load. An overhead crane that has not been inspected recently should be load-tested before being used as a primary lifting device.
Hydraulic Gantry Systems
These systems are used where mobile cranes cannot access or where overhead clearance is limited. A hydraulic gantry lifts the load vertically using hydraulic cylinders in the gantry towers, then the load is moved horizontally on skates and rollers at floor level. Hydraulic gantries are the workhorse of industrial machinery relocation — capable of handling loads from 10 to several hundred tonnes in facilities with standard ceiling heights.
Strand jacks
They are used for extreme-weight lifts where even large hydraulic gantries are insufficient. Strand jacks tension steel cables to lift loads incrementally and can be configured to handle loads in the thousands of tonnes. They are used in heavy industry, infrastructure projects, and for the most demanding industrial machinery installation work.
Chain Hoists and Electric Wire Rope Hoists
Chain hoists and electric wire rope hoists handle lighter lifts within facilities like positioning components, maintenance lifts, and supplementary hoisting during assembly operations. They are not adequate as primary lifting devices for industrial machinery of significant weight.
The difference between a smooth lift and a delayed project often comes down to planning — not equipment.
If you’re evaluating options, our team can help you determine the right approach before any commitments are made.
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Industrial Rigging in Manufacturing and Plant Relocation
The most common context for industrial rigging services in manufacturing environments is equipment relocation and installation. When a production line is being relocated — whether within the same facility or to a new site — every piece of equipment on that line will require rigging at least twice: once to extract it from its current position, and once to install it at its new one.
For a full production line relocation, rigging is not a series of individual lifts. It is a sequenced programme. The sequence matters because machines in a production line have dependencies. Some cannot be removed until adjacent equipment is moved first, and at the destination, the installation sequence is driven by access and tolerance requirements. The rigging contractor and the project manager must plan the sequence before any work starts, not discover it on-site.
Production lines that include heavy presses, precision machine tools, conveyor systems, and automated handling equipment introduce additional rigging complexity. Each equipment type has specific lift point requirements, weight distribution characteristics, and sensitivity to handling forces. A rigging company that has experience with mixed production line equipment — not just single machines — brings a different level of planning competence to this kind of project.
Production line moves fail in the planning phase, not during the lift.
If you’re preparing a relocation, we can map the sequence, identify constraints, and flag risks before they become downtime.
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Rigging Safety and Regulatory Framework
Industrial rigging operations are regulated in every jurisdiction that maintains health and safety legislation for manufacturing and construction. In the European Union, the legal framework includes Directive 2006/42/EC (the Machinery Directive), which covers the design and safe use of lifting accessories, and national transpositions of the Machinery Directive that impose specific requirements on lifting operations in workplaces.
Beyond the legal baseline, professional rigging companies in the industrial sector operate to standards set by the Lifting Equipment Engineers Association (LEEA) — the leading global trade body for the lifting industry. LEEA accreditation requires member companies to undergo technical audits, maintain their equipment to documented standards, and ensure that operatives hold current, verified certifications.
The practical safety requirements for a professional industrial rigging operation include:
Exclusion zones. During any crane or gantry lift, the area beneath and around the load is cleared of all non-essential personnel. No exceptions. No „it will only take a minute.”
Personal protective equipment. Riggers working in the vicinity of suspended loads wear hard hats and appropriate PPE. Synthetic slings and soft rigging components are inspected before each use for cuts, abrasions, and UV degradation.
Pre-lift equipment checks. Every crane, gantry, hoist, sling, shackle, and lifting accessory is inspected before the lift. Load cells on critical lifts verify actual weight against calculated weight before the load is committed to full height.
Communication protocol. On a multi-person rigging team, there is one designated signaller who communicates with the crane operator. All other team members hold position. No competing instructions.
Documented inspection records. All lifting equipment must be subject to thorough examination at defined intervals — typically every 6 or 12 months depending on equipment type and use frequency — and the examination records must be current and available for inspection.
What to Look for in a Rigging Company
The industrial rigging market contains contractors at significantly different levels of competence. The price spread is real, but the risk spread is larger. When evaluating rigging companies for industrial work, the following should be non-negotiable:
LEEA membership or equivalent accreditation. LEEA member companies are technically audited. Their equipment is maintained to standard. Their operatives are trained and certified. Asking for LEEA membership status or an equivalent national accreditation is a fast filter — it separates professionally managed rigging operations from unaccredited ones.
Current lifting equipment inspection records. All slings, shackles, hooks, and lifting accessories should have current thorough examination certificates. If a rigging contractor cannot produce these on request before the job starts, do not let them on site.
Lift plans as standard practice. Request a draft lift plan for your specific job as part of the quoting process. A contractor that produces a credible lift plan during the quotation stage — not just at pre-start — is demonstrating that they engineer their work rather than improvise it.
Experience with comparable loads. Rigging a 500-tonne press is not the same as rigging a 5-tonne machine tool. Ask for specific experience with loads of similar weight, type, and installation complexity. A rigger who has handled production line relocations involving multiple equipment types brings planning capability that a single-machine rigger does not.
Adequate insurance. Contractors’ All Risk insurance appropriate to the replacement value of the equipment being rigged, and public liability insurance appropriate to the project environment. Verify the coverage limits and the policy currency before work starts.
Rigging vs. General Lifting: Why the Distinction Matters
The term „rigging” is sometimes used loosely to refer to any lifting activity — including operations performed by general labourers with basic forklift or chain hoist experience. This usage creates a dangerous ambiguity when commissioning industrial work.
Professional industrial rigging involves load engineering, certified hardware, documented lift plans, and operatives who understand the physics of suspended loads — sling angles, dynamic loading during crane travel, resonance effects in long slings, the behaviour of asymmetric loads under lift. General lifting involves people who can operate a forklift.
For loads below a few tonnes, within a facility, using rated equipment and standard lift points, general lifting practice is often adequate. For industrial machinery, production line equipment, and any load above which a failure would cause significant damage or injury, professional rigging is not optional. It is the only appropriate approach.
Every industrial move comes with hidden risks — most only become visible once it’s too late.
If you want clarity before making a decision, our team is available to review your project.
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FAQ
What is industrial rigging?
Industrial rigging is the practice of lifting, moving, and positioning heavy loads — machinery, production line equipment, structural elements, and large plant — using mechanical lifting systems including cranes, hydraulic gantries, hoists, wire rope and chain slings, and associated hardware. It is a regulated, engineering-based discipline requiring certified operatives, documented lift plans, and inspected equipment.
What does a rigging company do?
A rigging company plans and executes lifting operations for industrial clients. This includes assessing load weights and centres of gravity, selecting appropriate lifting equipment and hardware, producing lift plans, conducting the physical lift safely, and positioning the load at its destination. In industrial relocation projects, rigging companies work alongside machinery movers and project managers to sequence equipment moves across full production lines and manufacturing facilities.
What certifications should a rigging company have?
At minimum: LEEA (Lifting Equipment Engineers Association) membership or national equivalent accreditation, current thorough examination certificates for all lifting equipment and rigging accessories, and qualified operatives for any crane operations. Contractors operating in the EU must comply with the Machinery Directive’s requirements for lifting accessories. Insurance must cover the replacement value of equipment being rigged and include adequate public liability coverage.
How is a lift plan different from a risk assessment?
A lift plan is an engineering document that specifies how a particular load will be lifted — the rigging configuration, equipment to be used, centre of gravity, weight, lift points, and sequence. A risk assessment identifies the hazards involved in the operation and the controls in place to manage them. Both are required for professional industrial rigging work. They address different aspects of the same operation and are not interchangeable.
How much do industrial rigging services cost?
Rigging costs depend on load weight, complexity of the rigging configuration, equipment required, site access, and duration. A straightforward machine extraction using a hydraulic gantry within a facility costs significantly less than a complex multi-point lift requiring a large-capacity mobile crane. No reliable figure can be given without a site assessment. Rigging quotations that are priced from a phone description alone should be verified carefully — what appears cheap before a site visit often increases significantly when the actual conditions are assessed.
When does a production line relocation require specialist rigging services?
Any production line relocation involving equipment above approximately 5 tonnes, equipment with specific lift point requirements, or equipment that cannot be moved with standard forklifts requires specialist rigging. This covers the majority of manufacturing production lines — which typically include presses, machine tools, conveyor systems, and automated handling equipment, all of which require engineered lift plans, rated rigging hardware, and certified operatives.
What is the difference between a rigger and a millwright?
A rigger specialises in the lifting, moving, and positioning of heavy loads using mechanical lifting systems.
We’ve prepared an exhaustive explanation of what a millright is, here. But in short, a millwright specialises in the installation, alignment, and mechanical assembly of industrial machinery.
In practice, the two roles frequently work together — riggers position the machine, millwrights align and commission it. On production line relocations, both disciplines are typically required, either within the same company or as coordinated contractors.
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