Lifting Slings Buyer's Guide

How to Choose the Right Lifting Sling for Safe and Efficient Lifting Operations

Lifting slings are one of the most widely used and critically important pieces of lifting equipment in industrial environments. Choosing the correct lifting sling is essential for ensuring safe lifting operations, protecting personnel, preventing load damage, maintaining compliance with UK lifting regulations, and maximising operational efficiency.

Whether you work in construction, manufacturing, offshore operations, warehousing, engineering, logistics, or entertainment rigging, understanding the different types of lifting slings, how lifting sling ratings work, and how to select the correct sling configuration can significantly reduce risk while improving lifting performance.

This comprehensive guide explains everything buyers, lifting supervisors, procurement teams, engineers, and safety managers need to know about lifting slings. We cover the different sling types, lifting sling inspection checklist requirements, ASME B30.9 lifting sling standard guidance, lifting sling colour coding guide information, lifting sling angle factor calculations, compliance considerations, maintenance requirements, and practical buying advice.

By the end of this guide, you will understand:

• The different types of lifting slings explained
• How to choose the correct lifting sling for your application
• How Working Load Limit (WLL) affects sling selection
• When to retire a lifting sling
• Key UK regulations and compliance requirements
• How sling angles impact lifting capacity
• Common mistakes buyers make when purchasing lifting slings
• Best practices for inspection, storage, and maintenance

At Lifting Equipment Store, we work with industrial buyers and lifting professionals across multiple industries to supply lifting slings designed for safety, reliability, and long-term performance. This guide reflects real-world lifting expertise and practical application knowledge.

👉 Shop our rated and conforming lifting slings

WHAT ARE LIFTING SLINGS?

Lifting slings are flexible load-handling devices used to connect a load to lifting equipment such as cranes, hoists, gantries, davits, or forklift attachments. Their purpose is to safely support, stabilise, and distribute the weight of a load during lifting operations.

Unlike rigid lifting devices, slings provide flexibility around awkward, fragile, oversized, or irregularly shaped loads. Different sling materials and constructions are used depending on the environment, load characteristics, temperature exposure, and lifting configuration.

A lifting sling typically consists of:

• A load-bearing body
• Reinforced lifting eyes or end fittings
• Identification tags or labels
• Protective sleeves or wear pads
• Stitching, chain links, or wire rope terminations depending on sling type

The main function of a lifting sling is to transfer load forces safely from the load to the lifting machine while maintaining load control and minimising risk.

How Lifting Slings Work

Lifting slings work by distributing the load weight across one or more sling legs connected to lifting points on the load. The sling transfers the load to the crane hook or lifting attachment.

The effectiveness and safety of a lifting sling depend on:

• Correct sling type
• Proper Working Load Limit (WLL)
• Appropriate sling angle
• Correct hitch configuration
• Load balance and centre of gravity
• Environmental suitability
• Proper inspection and maintenance

Improper sling selection or incorrect usage can result in sling failure, load instability, equipment damage, or serious injury.

Main Types of Lifting Slings

The four primary categories of lifting slings are:

1. Webbing slings --> SHOP
2. Round slings --> SHOP
3. Chain slings --> SHOP
4. Wire rope slings --> SHOP

Each type has specific advantages, limitations, and ideal applications.

Common Industries Using Lifting Slings

Lifting slings are used extensively across:

• Construction and infrastructure
• Manufacturing and engineering
• Offshore oil and gas
• Marine operations
• Warehousing and logistics
• Automotive production
• Utilities and energy
• Steel fabrication
• Entertainment rigging
• Aerospace industries

Types of Lifting Slings Explained

Understanding the different types of lifting slings is essential when determining which product best suits your lifting application.

Webbing Slings

Webbing slings are manufactured from woven polyester webbing and are among the most commonly used lifting slings in modern industry.

Advantages of Webbing Slings

• Lightweight and easy to handle
• Flexible around awkward loads
• Reduced risk of damaging finished surfaces
• Cost-effective
• Colour coded for easy capacity identification
• Corrosion resistant

Disadvantages of Webbing Slings

• Vulnerable to cuts and abrasion
• Lower resistance to sharp edges
• Unsuitable for extremely high temperatures
• Can suffer UV degradation over time

Best Applications

Webbing slings are ideal for:

• Finished or painted products
• Machinery lifting
• Construction materials
• Delicate loads
• General warehouse lifting

Typical Capacities

Webbing slings are available in a wide range of Working Load Limits from 1 tonne to over 20 tonnes depending on configuration.

Lifting Sling Colour Coding Guide

Under standard lifting sling colour coding systems:

Colour	Working Load Limit (WLL)	Typical Sling Type
Violet	1 Tonne	Webbing / Round Sling
Green	2 Tonnes	Webbing / Round Sling
Yellow	3 Tonnes	Webbing / Round Sling
Grey	4 Tonnes	Webbing / Round Sling
Red	5 Tonnes	Webbing / Round Sling
Brown	6 Tonnes	Webbing / Round Sling
Blue	8 Tonnes	Webbing / Round Sling
Orange	10 Tonnes	Webbing / Round Sling
Orange (Specialist)	15+ Tonnes	Heavy-Duty Round Sling

Important: Always verify the sling identification tag and manufacturer certification before use. Colour coding should only be used as a quick visual reference and never as the sole method of confirming lifting capacity.

Endless Round Slings

Round slings consist of continuous polyester yarn enclosed within a durable protective sleeve.

Advantages of Round Slings

• Extremely flexible
• Excellent load conformity
• Lightweight
• High strength-to-weight ratio
• Reduced pressure points on loads

Disadvantages of Round Slings

• Internal damage may be difficult to identify
• Vulnerable to sharp edges
• Sleeve damage can compromise safety

Best Applications

Round slings are commonly used for:

• Cylindrical loads
• Heavy machinery
• Irregular loads
• Precision lifting operations

Capacity Range

Round slings can be supplied in very high capacities, often exceeding 100 tonnes for specialist heavy lifting applications.

Chain Slings & Lifting Chains

Chain slings are manufactured using high-strength alloy lifting chain with master links, shortening clutches, and lifting hooks.

Advantages of Chain Slings

• Extremely durable
• Excellent abrasion resistance
• Suitable for high temperatures
• Adjustable sling leg configurations
• Easy to inspect
• Long service life

Disadvantages of Chain Slings

• Heavier than textile slings
• More expensive initially
• Can damage delicate loads
• Requires trained handling

Best Applications

Chain slings are ideal for:

• Steel fabrication
• Heavy engineering
• Foundries
• Offshore lifting
• Harsh industrial environments

Grade Considerations

Most modern chain slings use Grade 80 or Grade 100 chain.

Grade 100 chain offers:

• Higher lifting capacities
• Reduced chain weight
• Improved efficiency

Wire Rope Slings

Wire rope slings are manufactured from steel wire rope with mechanically spliced or ferrule-secured terminations.

Advantages of Wire Rope Slings

• High strength
• Excellent durability
• Good abrasion resistance
• Suitable for heavy loads
• Better resistance to crushing than fibre slings

Disadvantages of Wire Rope Slings

• Less flexible
• Can develop broken wires
• Heavier handling
• May damage finished surfaces

Best Applications

Wire rope slings are commonly used in:

• Construction
• Marine lifting
• Infrastructure projects
• Crane operations
• Heavy industrial lifting

Lifting Sling Configurations and Hitch Types

The lifting configuration significantly impacts sling performance and capacity.

Vertical Hitch

A vertical hitch connects directly between the hook and load.

Benefits

• Simple setup
• Full rated capacity
• Suitable for balanced loads

Limitations

• Limited load stability
• Poor control for long loads

Choker Hitch

A choker hitch wraps around the load and tightens during lifting.

Benefits

• Good load control
• Prevents slipping
• Useful for cylindrical loads

Limitations

• Reduced sling capacity
• Increased sling wear
• Potential load damage

Basket Hitch

A basket hitch loops under the load.

Benefits

• Increased capacity
• Better load distribution
• Improved stability

Limitations

• Requires balanced loads
• Potential slipping if unsecured

Key Factors to Consider Before Buying Lifting Slings

Understanding how to choose lifting slings correctly requires evaluating multiple technical and operational factors.

Working Load Limit (WLL)

Working Load Limit is the maximum load a sling is designed to lift under specified conditions.

WLL is one of the most important considerations when selecting lifting slings.

The WLL depends on:

• Sling material
• Configuration
• Sling angle
• Hitch type
• Environmental conditions

Why WLL Matters

Underspecifying WLL can lead to:

• Sling failure
• Serious injury
• Regulatory breaches
• Equipment damage
• Load instability

Over-specifying excessively may increase cost unnecessarily and reduce handling efficiency.

Always select a sling with sufficient capacity for:

• The full load weight
• Dynamic loading forces
• Potential shock loading
• Angle reductions

Safe Working Load (SWL)

Although SWL is still commonly referenced, modern standards generally use Working Load Limit (WLL).

SWL historically referred to the maximum safe load under ideal conditions.

Buyers should ensure terminology aligns with current standards and supplier documentation.

👉 Read our blog about the difference between WLL and SWL

Lifting Sling Angle Factor

One of the most misunderstood aspects of sling selection is sling angle reduction.

As sling angles decrease, the force on each sling leg increases significantly.

Sling Angle (Included Angle)	Angle Factor	Tension Increase on Each Sling Leg
90°	1.00	No increase
60°	1.15	Moderate increase
45°	1.41	Significant increase
30°	2.00	Very high increase
Below 30°	Not Recommended	Dangerous overload risk

 

Important Guidance

• The smaller the sling angle, the greater the force placed on each sling leg.
• Sling angles below 30° should generally be avoided.
• Always calculate sling leg tension before lifting.

Real-World Implications

Improper sling angle calculations can:

• Overload slings unexpectedly
• Create instability
• Increase risk of failure
• Cause uneven load distribution

Best Practice

Where possible:

• Maintain sling angles above 45°
• Avoid angles below 30°
• Use spreader beams for wide loads
• Use spreader beams where necessary to maintain safe sling angles.
• Never exceed the sling Working Load Limit (WLL).

Environmental Conditions

The operating environment significantly impacts sling selection.

Temperature Exposure

High temperatures may:

• Weaken polyester slings
• Affect synthetic fibres
• Reduce sling capacity
• Accelerate wear

Chain slings are generally preferred for high-temperature environments.

Chemical Exposure

Acids and chemicals can degrade textile slings rapidly.

Buyers should verify chemical compatibility before selecting slings.

Abrasion and Sharp Edges

Sharp load edges are one of the most common causes of sling damage.

Protective sleeves and edge protection should always be used where necessary.

Frequency of Use

Duty cycle and usage frequency affect sling lifespan and maintenance requirements.

For frequent heavy-duty operations:

• Chain slings often provide better long-term durability
• Higher-grade components may reduce replacement frequency
• Enhanced inspection schedules may be required

Portability and Handling

Large industrial operations may prioritise:

• Lightweight handling
• Faster rigging
• Reduced operator fatigue
• Ease of storage

Textile slings are generally easier to handle than chain or wire rope slings.

Maintenance Requirements

Different sling types have varying maintenance demands.

Textile Slings

Require:

• Visual inspection
• Protection from contamination
• Dry storage

Chain Slings

Require:

• Lubrication
• Wear measurement
• Link inspection

Wire Rope Slings

Require:

• Broken wire inspection
• Corrosion monitoring
• End fitting checks

Future Scalability

Buyers should consider future operational growth.

Questions to ask include:

• Will lifting capacities increase?
• Will lift frequency rise?
• Will the operating environment change?
• Will different load types be introduced?

Selecting adaptable equipment can reduce future replacement costs.

Industry Applications for Lifting Slings

Construction Industry

Construction sites use lifting slings extensively for:

• Steel erection
• Precast concrete lifting
• Structural installation
• Plant movement
• Material handling

Durability and compliance are critical in construction environments.

Manufacturing and Engineering

Manufacturing facilities rely on lifting slings for:

• Machine installation
• Component handling
• Production line maintenance
• Tooling movement

Precision handling is often essential to avoid equipment damage.

Offshore and Marine

Offshore lifting operations require:

• Corrosion resistance
• High safety margins
• Certified lifting equipment
• Enhanced inspection routines

Chain slings and specialist offshore-rated slings are common.

Warehousing and Logistics

Warehousing operations use slings for:

• Pallet handling
• Oversized load movement
• Vehicle loading
• Container operations

Lightweight textile slings are frequently preferred.

Automotive Industry

Automotive operations require lifting slings for:

• Engine handling
• Vehicle assembly
• Robotics maintenance
• Tooling movement

Load protection is especially important.

Entertainment and Rigging

Entertainment industries use lifting slings for:

• Stage rigging
• Lighting installations
• Audio equipment suspension
• Temporary structures

Rigging applications often require lightweight, flexible lifting solutions.

Safety Considerations and Compliance

Safety compliance is one of the most important aspects of lifting sling selection and operation.

LOLER Regulations

The Lifting Operations and Lifting Equipment Regulations 1998 (LOLER) apply to lifting equipment used in UK workplaces.

LOLER requires:

• Equipment suitability
• Proper planning of lifting operations
• Thorough examination by competent persons
• Safe operation procedures
• Record keeping

Lifting slings used for lifting people or loads fall within LOLER scope.

LOLER Inspection Requirements

Typical thorough examination intervals include:

• Every 6 months for lifting accessories
• More frequently in harsh environments
• Following exceptional circumstances

PUWER Regulations

The Provision and Use of Work Equipment Regulations 1998 (PUWER) require lifting equipment to be:

• Suitable for intended use
• Properly maintained
• Used by trained personnel
• Kept in safe condition

PUWER works alongside LOLER to ensure safe lifting operations.

UKCA and CE Marking

Lifting slings should comply with relevant conformity requirements.

Proper marking should include:

• Manufacturer details
• Working Load Limit
• Serial numbers
• Material identification
• Standard compliance references

ASME B30.9 Lifting Sling Standard

The ASME B30.9 lifting sling standard provides internationally recognised guidance for:

• Sling construction
• Identification
• Inspection
• Removal criteria
• Safe use practices

Although UK operations primarily follow BS EN standards and LOLER requirements, ASME B30.9 remains widely referenced internationally.

Operator Training

Incorrect lifting practices remain one of the leading causes of lifting incidents.

Operators should receive training covering:

• Sling selection
• Load calculations
• Angle factors
• Inspection procedures
• Hitch configurations
• Load stability
• Safe lifting practices

Common Safety Mistakes

Common lifting sling safety mistakes include:

• Using damaged slings
• Exceeding WLL
• Ignoring sling angles
• Shock loading
• Using incorrect hitch types
• Poor load balancing
• Inadequate edge protection
• Improper storage

Load Stability Considerations

Load instability can cause:

• Swinging loads
• Sudden load shifts
• Sling overload
• Crane instability

Always identify the load centre of gravity before lifting.

Use:

• Correct sling configurations
• Balanced lifting points
• Tag lines where necessary

Sizing and Specification Guide

Correct sizing is fundamental to safe lifting sling selection.

Choosing the Correct Capacity

To determine required sling capacity:

1. Identify total load weight
2. Consider dynamic loading
3. Factor in sling angles
4. Account for hitch configuration
5. Include safety margins where appropriate

Never estimate load weight visually.

Use:

• Manufacturer specifications
• Engineering drawings
• Weighing systems
• Calculated load data

Load Calculations

Load calculations should include:

• Total mass
• Centre of gravity
• Sling leg loading
• Angle factors

Example

A 4 tonne load lifted using a two-leg sling at 45° creates significantly more force in each sling leg than a vertical lift.

Failure to account for angle loading can overload the sling despite the total load remaining unchanged.

Sling Length Selection

Sling length affects:

• Sling angle
• Lift height
• Load stability
• Crane hook height requirements

Longer slings reduce sling angle severity but may require additional headroom.

Lift Height Considerations

Buyers should assess:

• Available headroom
• Crane hook travel
• Sling length requirements
• Load dimensions
• Obstructions

Incorrect planning can prevent safe completion of lifting operations.

Duty Ratings and Heavy Usage

Frequent heavy-duty lifting may justify:

• Upgraded sling materials
• Higher-grade chain assemblies
• Reinforced wear protection
• Enhanced inspection schedules

Environmental Specification Matching

Ensure sling materials match:

• Moisture exposure
• Chemical exposure
• UV exposure
• Temperature range
• Abrasive conditions

Common Mistakes Buyers Make

Underspecifying Lifting Capacity

Choosing slings based solely on static load weight is a common and dangerous mistake.

Dynamic loading, angle factors, and shock loading can dramatically increase actual sling forces.

Choosing Based on Price Alone

Low-cost lifting slings may:

• Have shorter service life
• Offer reduced durability
• Require more frequent replacement
• Increase long-term ownership costs

Industrial lifting equipment should be evaluated based on total lifecycle value, not simply purchase price.

Ignoring Environmental Conditions

Using textile slings in abrasive or chemically aggressive environments can cause rapid deterioration.

Environmental compatibility should always be verified.

Failing to Plan for Future Growth

Businesses often outgrow their original lifting equipment specification.

Scalable lifting solutions can:

• Reduce replacement costs
• Improve operational flexibility
• Support long-term expansion

Incorrect Sling Configuration

Incorrect hitch types or poor sling angle management can create unsafe lifting conditions even when sling capacity appears sufficient.

Poor Maintenance Planning

Lifting slings require ongoing inspection and maintenance.

Failure to implement structured inspection schedules can lead to:

• Premature failure
• Increased downtime
• Regulatory breaches
• Higher replacement costs

Product Comparison Advice

When comparing lifting slings, buyers should evaluate more than just capacity.

Important Comparison Factors

Material Type

Compare:

• Polyester
• Alloy chain
• Steel wire rope

Each material offers different benefits.

Durability

Consider:

• Abrasion resistance
• Environmental resistance
• Fatigue life
• UV stability

Weight and Handling

Lightweight slings improve:

• Operator handling
• Setup speed
• Ergonomics

Compliance and Certification

Ensure products include:

• Certification documentation
• Traceability
• Proper identification
• Compliance marking

Repairability and Maintenance

Chain slings often allow component replacement, while damaged textile slings generally require full replacement.

Maintenance and Inspection Guide

Routine maintenance and inspection are essential for lifting sling safety and longevity.

Daily Inspections

Operators should visually inspect slings before every use.

Lifting Sling Inspection Checklist

Check for:

• Cuts or tears
• Abrasion damage
• Broken stitching
• Chemical damage
• Heat damage
• Distortion
• Corrosion
• Broken wires
• Elongated chain links
• Damaged fittings
• Missing identification tags

Any defective sling should be removed from service immediately.

Preventative Maintenance

Preventative maintenance helps:

• Extend service life
• Reduce downtime
• Improve safety
• Lower replacement costs

Maintenance schedules should reflect:

• Usage intensity
• Environment
• Load severity
• Regulatory requirements

Lubrication

Chain slings and wire rope slings may require periodic lubrication to reduce:

• Corrosion
• Friction
• Wear

Always use approved lubricants.

Proper Storage

Improper storage significantly shortens sling lifespan.

Best practices include:

• Clean, dry storage areas
• Protection from chemicals
• Avoiding direct sunlight
• Preventing mechanical damage
• Proper hanging or racking

Inspection Intervals

Inspection frequency depends on:

• Usage frequency
• Environment
• Regulatory requirements
• Manufacturer guidance

High-use environments may require more frequent inspections.

Signs of Wear

Common wear indicators include:

Textile Slings

• Frayed edges
• Burns
• Broken fibres
• Discolouration

Chain Slings

• Elongated links
• Cracks
• Corrosion
• Hook deformation

Wire Rope Slings

• Broken wires
• Bird-caging
• Kinks
• Crushing

When to Retire a Lifting Sling

A lifting sling should be retired immediately if:

• Identification tags are missing
• Damage exceeds manufacturer limits
• Excessive wear is present
• Structural integrity is compromised
• Heat or chemical damage is evident
• Deformation occurs

Never attempt unauthorised repairs.

Expert Buying Advice for Industrial Buyers

Professional buyers should prioritise:

• Compliance
• Technical suitability
• Supplier expertise
• Product traceability
• Long-term durability
• After-sales support

A reputable lifting equipment supplier should provide:

• Technical guidance
• Certification documentation
• Inspection support
• Product traceability
• Industry expertise

At Lifting Equipment Store, our team supports customers with tailored lifting solutions based on operational requirements, environmental conditions, and compliance needs.

Final Thoughts

Choosing the correct lifting sling is critical for operational safety, regulatory compliance, equipment longevity, and lifting efficiency.

Understanding the different types of lifting slings explained throughout this guide allows buyers to make informed decisions based on real operational requirements rather than simply price or availability.

Industrial lifting operations involve significant responsibility. Selecting lifting slings with the correct Working Load Limit, environmental suitability, configuration, and compliance certification can dramatically reduce operational risk while improving productivity.

At Lifting Equipment Store, we help businesses across construction, manufacturing, offshore, engineering, logistics, and industrial sectors source lifting slings and lifting equipment tailored to their specific applications.

Our technical team can assist with:

• Lifting sling selection
• Capacity calculations
• Compliance guidance
• Inspection advice
• Bespoke lifting assemblies
• Heavy-duty lifting solutions

For complex lifting operations or specialist requirements, contacting experienced lifting equipment professionals is always recommended.