Ratchet Straps vs Lashing Straps: Full Comparison Guide

What Are Lashing Straps and How Do They Work?

A lashing strap is a length of textile webbing with an end fitting at each end and a tensioning device that allows the strap to be tightened against cargo to hold it in place. The webbing itself is typically woven polyester, chosen for its combination of high tensile strength, low stretch under load, resistance to ultraviolet degradation, and relatively low sensitivity to moisture compared to natural fiber alternatives. The end fittings vary by product type: hooks such as flat hooks, claw hooks, or snap hooks, loops, or flat end connections that attach to anchor points on the vehicle or the load.

The tensioning mechanism is what distinguishes different types of lashing straps from one another. The three main categories are:

• Cam buckle straps: The webbing threads through a spring loaded cam that grips the strap under tension. The operator pulls the free end of the webbing to create tension and the cam locks automatically when released. Cam buckle straps are fast to apply and release, gentle to operate, and well suited to light cargo where hand tension is adequate. Their limitation is that the maximum tension achievable is limited to what the operator can apply by hand, typically 150 to 300 Newtons of hand force, which translates to a relatively modest pre tension in the restraint system.
• Over center buckle straps: A lever mechanism that creates tension as it is pushed over center. These provide somewhat higher tension than cam buckle designs but remain limited by manual lever force and are used in similar light duty applications.
• Ratchet lashing straps: Incorporate a ratchet mechanism that uses mechanical advantage to apply significantly higher tension than hand strength alone can achieve. This category spans from light domestic ratchet straps rated at 250 kg lashing capacity to heavy commercial ratchet lashing rated at 10,000 kg and above for use in truck and rail freight applications.

The Rating System for Lashing Straps

Lashing straps sold in Europe and many other markets are rated and marked according to EN 12195 Part 2, the standard that specifies the testing, marking, and performance requirements for textile lashing straps for load restraint on road vehicles. The critical ratings on a compliant lashing strap are:

• LC (Lashing Capacity): The maximum load that the strap can restrain when used correctly in the specified lashing configuration. LC is the primary load rating that determines whether a strap is appropriate for a given cargo weight and restraint requirement. It is marked in kilonewtons or kilograms and must appear on the strap label.
• SHF (Standard Hand Force): The standard reference tension force for ratchet lashing straps, defined as 500 N (50 kg) in EN 12195 Part 2. This is the nominal force assumed to be applied by the operator's hand to the ratchet handle during tensioning, and it is used in calculations of the pre tension (STF) that the strap applies to the cargo.
• STF (Standard Tension Force): The pre tension force that the strap delivers to the cargo when operated with the standard hand force of 500 N. STF depends on the ratchet mechanism's mechanical advantage. A typical commercial ratchet strap with 25 mm webbing might have an STF of 250 to 400 N; a heavy commercial 50 mm ratchet lashing might have an STF of 700 to 1,000 N. Higher STF means the strap holds cargo more firmly and resists vibration induced loosening more effectively during transit.
• MBS (Minimum Breaking Strength): The minimum force at which the strap assembly including webbing and end fittings breaks during testing. MBS is always significantly higher than LC, providing a safety margin. Under EN 12195 Part 2, the LC is typically one third of the MBS, giving a safety factor of three on breaking strength.

What Are Ratchet Straps and How Does the Ratchet Mechanism Work?

A ratchet strap is a lashing strap that uses a toothed wheel and pawl mechanism to multiply the operator's hand force into a significantly higher strap tension. The ratchet body contains a spool onto which the webbing winds as tension is applied, and a spring loaded pawl that engages the teeth of the ratchet wheel to prevent the spool from unwinding between strokes of the handle. The operator works the handle back and forth, each stroke winding a short length of webbing onto the spool and incrementally increasing the tension, until the desired tension is achieved or the handle becomes too difficult to operate further.

The mechanical advantage of the ratchet mechanism depends on the handle length and the spool diameter. A typical commercial ratchet strap handle of 200 to 300 mm length acting on a spool of 30 to 40 mm effective radius creates a mechanical advantage of 5:1 to 10:1, meaning that a 500 N hand force on the handle translates to 2,500 to 5,000 N of strap tension at the spool. When the strap runs over the cargo and connects to an anchor point, the geometry of the lashing further affects the final restraint force on the cargo, but the mechanical advantage of the ratchet is the primary reason ratchet straps can apply substantially more restraint force than cam buckle or hand tensioned lashing straps.

Ratchet Strap Components and Construction

Understanding the components of a ratchet strap helps users identify wear, damage, and replacement requirements. A complete ratchet strap assembly consists of:

• The ratchet body: Typically pressed or forged steel, housing the spool, ratchet wheel, pawl, and spring. Quality ratchet bodies are made from high grade steel and have smooth, burr free edges to prevent webbing damage during winding. The body carries the product markings including LC, STF, MBS, and the manufacturing standard.
• The webbing: Woven polyester in widths of 25 mm, 35 mm, 50 mm, or 75 mm for the most common commercial sizes. The webbing has two sections: a short fixed end that attaches to the ratchet body, and a longer adjustable end that feeds through the spool. Webbing color is often used to indicate the load rating of the strap, though color coding is not standardized across all manufacturers.
• End fittings: The hooks or connections at each end of the strap assembly. Common types include flat wire hooks (J hooks), claw hooks, D rings, and flat ends for use with cargo bars or edge protectors. End fittings are forged or stamped steel, surface treated against corrosion, and are individually rated to match or exceed the strap's LC rating.
• The release mechanism: A lever or trigger on the ratchet body that releases the pawl from the ratchet wheel, allowing the spool to unwind and the strap to be released. On commercial ratchet straps, the release lever must be deliberately depressed while the handle is moved in the release direction. This two action release prevents accidental loosening during transit due to vibration or handle movement.

Common Ratchet Strap Sizes and Their Rated Capacities

Ratchet Straps vs Lashing Straps: The Direct Comparison

The choice between ratchet straps and simpler lashing straps such as cam buckle or over center designs is not always obvious, because both can be purchased in the same places, both look similar in packaging, and both are described as cargo straps in informal usage. The meaningful differences between them become clear when the selection criteria relevant to the actual load and transport conditions are examined systematically.

Tension Force: The Fundamental Difference

The most important practical difference between ratchet straps and cam buckle lashing straps is the tension force each can apply. A cam buckle strap tightened by hand typically achieves a strap tension of 100 to 250 N, depending on the operator's strength and the friction coefficient of the cam. A 25 mm ratchet strap operated with a standard hand force of 500 N on the handle achieves an STF of 150 to 250 N at a minimum, and most 50 mm commercial ratchet straps achieve 500 to 1,000 N STF from the same hand force input. The practical consequence of this tension difference is that a ratchet strap holds cargo against larger forces during transport, resists vibration induced loosening better over long journeys, and provides a more reliably consistent restraint force regardless of operator strength variation.

For cargo that weighs more than approximately 50 to 100 kg and will travel on public roads over any significant distance, the higher and more consistent tension of a ratchet strap provides meaningful safety margin over a cam buckle lashing strap. For very light loads such as bicycle accessories, camping equipment, and soft furniture on short, low speed journeys where the restraint force requirement is genuinely modest, a cam buckle strap may be entirely adequate and is faster and easier to use.

Risk of Cargo Damage: When Lashing Straps Are the Better Choice

Ratchet straps can damage cargo if used without care, and this is the context in which lashing straps genuinely outperform ratchet straps. The same mechanical advantage that makes ratchet straps effective at securing heavy loads allows operators to inadvertently apply crushing force to fragile or compressible cargo. A 50 mm ratchet strap operated to its standard tension can apply over 1,000 N (approximately 100 kg force) directly to the cargo surface at the strap contact point. On soft goods, upholstered furniture, thin metal panels, and plastic housings, this concentrated force causes permanent deformation, surface damage, or structural failure of the cargo.

For cargo that cannot withstand the direct pressure of a highly tensioned strap, the options are: use a cam buckle strap that limits tension to hand force levels, use ratchet straps in combination with padding or edge protectors that distribute the contact force over a larger area, or configure the lashing as a loop or bundle tie that avoids direct strap contact with the sensitive cargo surface. Experienced freight handlers frequently use ratchet straps with felt lined or rubber padded edge protectors on polished metal, wooden, and painted surfaces to combine the tension advantage of the ratchet with protection of the cargo surface.

Speed and Ease of Use

Cam buckle lashing straps are faster to apply and release than ratchet straps. The cam mechanism requires only one hand action: pulling the free end through the buckle and letting the cam lock, with release achieved by pressing the cam lever while pulling the strap. A trained operator can apply and remove a cam buckle strap in 15 to 30 seconds. A ratchet strap requires threading the webbing through the spool, operating the handle repeatedly to build tension, and then using the two step release mechanism to loosen and extract the webbing. The same operator may take 60 to 120 seconds per ratchet strap application and removal, especially in cold conditions where gloves make fine manipulations more difficult.

For delivery drivers who secure and release loads many times per day, this time difference is operationally significant. Fleets frequently use cam buckle straps for low weight, frequent delivery applications and reserve ratchet straps for heavy or high value loads that warrant the additional tension and the time investment in correct application.

Side by Side Comparison

Ratchet Lashing in Professional Freight Transport

In professional road freight, the term ratchet lashing describes the complete system of webbing restraints used to secure loads on flatbed trailers, curtainsider trailers, and open trucks. Professional ratchet lashing operations are governed by EN 12195 Part 1, the standard that specifies the calculation method for determining how many lashings are needed for a given cargo and transport scenario, and EN 12195 Part 2, the product standard for the lashing straps themselves. Understanding these standards is necessary for professional freight operators who need to demonstrate legal compliance with cargo securing requirements.

Calculating the Number of Lashings Required

EN 12195 Part 1 provides a calculation method for determining the minimum number of lashing straps needed to restrain a cargo item. The calculation considers the cargo mass, the acceleration forces that the cargo experiences during transport expressed as fractions of gravitational acceleration in the forward, lateral, and vertical directions, the friction coefficient between cargo and vehicle floor, and the STF of the lashing straps being used. The standard reference accelerations for road transport are 0.8g forward, 0.5g lateral, and 0.5g vertical (upward), reflecting the forces experienced during emergency braking, cornering, and road surface irregularities.

For a 1,000 kg cargo item on a flatbed with a friction coefficient of 0.3 (smooth steel on smooth steel), secured with 50 mm ratchet straps with an STF of 500 N each, the EN 12195 Part 1 calculation requires a minimum of 4 over lashings to meet the forward restraint requirement of 0.8g, assuming the lashings are approximately perpendicular to the cargo surface. Increasing the friction coefficient by placing rubber anti slip matting between the cargo and the vehicle floor reduces the number of lashings required; a friction coefficient of 0.5 (rubber on steel) reduces the same calculation to 2 to 3 lashings for the same cargo mass and strap STF.

Lashing Configurations: Over Lashing vs Direct Lashing

Ratchet lashing on professional flatbeds uses two primary strap configurations:

• Over lashing (top over lashing): The most common configuration for general freight. The strap hooks to an anchor point on one side of the vehicle, passes over the top of the cargo, and hooks to an anchor point on the opposite side. The ratchet is tightened until the required tension is achieved. Over lashing prevents the cargo from moving vertically and, through friction with the vehicle floor, restrains it horizontally. The restraint effectiveness depends on the strap tension, the strap angle to the cargo surface, and the friction coefficient between cargo and deck.
• Direct lashing (spring lashing or diagonal lashing): The strap connects between a fixed point on the cargo such as a lifting eye, lashing ring, or purpose built tie down point and an anchor point on the vehicle, running at an angle to the horizontal. Direct lashing restrains the cargo more directly against specific directions of movement, and is the preferred configuration for heavy or large cargo where over lashing would require impractically high tensions to achieve the required restraint force through friction alone. Multiple diagonal lashings arranged in opposing pairs create a cage of restraint forces that prevent cargo movement in all directions simultaneously.

Anchor Points and Their Rated Capacities

The lashing anchor points on the vehicle are as critical to the restraint system as the straps themselves. Each anchor point must be rated to at least the LC of the strap connected to it. Commercial flatbed trailers are equipped with lashing rails or lashing rings rated at 2,000 to 4,000 kg each, spaced at 500 mm or 1,000 mm intervals along the trailer sides. Using a strap rated at 3,000 kg LC on an anchor point rated at only 1,000 kg means the anchor point, not the strap, is the weak link in the system. Always verify that the anchor point rating meets or exceeds the LC of the strap before applying tension; using multiple straps on a single under rated anchor point does not increase the anchor point's rated capacity and can lead to catastrophic anchor failure during an emergency stop.

How to Apply Ratchet Straps Correctly: Step by Step Procedure

Correct application of ratchet straps is a skill that prevents both cargo loss and equipment damage. Many ratchet strap failures in service are caused not by product defects but by incorrect threading of the webbing through the spool, positioning straps over sharp edges without protection, or applying tension without verifying hook seating. The following procedure covers correct application for a standard over lashing configuration on a flatbed vehicle.

1. Inspect the strap before use: Visually inspect the webbing for cuts, abrasion damage, chemical staining, heat damage, or UV degradation shown by fading and brittleness. Check the ratchet body for corrosion, deformation, or damaged pawl springs. Inspect end fittings for cracks, deformation, or wear beyond the safe working limit marked on the strap label. A strap with any of these defects must be taken out of service immediately regardless of the apparent severity of the damage; a damaged strap may fail at a fraction of its rated LC.
2. Open the ratchet fully: Pull the release lever while moving the handle to the fully open position, allowing the spool to unwind freely. Feed the adjustable end of the webbing up through the center slot of the spool from below, and pull through enough length to span the cargo with 300 to 500 mm of webbing remaining to wind onto the spool during tensioning.
3. Attach end fittings to anchor points: Connect the hook at the fixed end of the strap to the anchor point on one side of the vehicle. Run the strap over the cargo and connect the hook on the adjustable end to the anchor point on the opposite side. Verify that both hooks are fully seated in the anchor points with the safety latch engaged, and that neither hook is loaded in a way that opens it; hook tips must not be loaded against the gate.
4. Position edge protectors: Where the strap passes over the edge of cargo with a radius smaller than 1 mm such as sharp metal edges, concrete corners, or timber edges, insert an edge protector or corner protector between the strap and the edge before tensioning. Sharp edges cut webbing under load and the strap will not give visible warning before failing.
5. Apply tension: Work the ratchet handle through its full stroke repeatedly until the strap is taut and the cargo is secured at the required tension. Do not apply so much tension that the cargo is crushed or distorted. For professional applications, use a strap tension meter to verify that the achieved tension is within the acceptable range for the cargo and lashing calculation being applied.
6. Secure excess webbing: Tuck or wrap the remaining free webbing to prevent it from flapping in the wind during transit, which causes abrasion damage to the webbing and at highway speed can create dangerous projectiles. Many ratchet straps include hook and loop fastener strips for this purpose; alternatively, use cable ties or short lengths of cord to secure the excess webbing bundle.
7. Check tension after initial travel: After the first 50 to 100 kilometers of a journey, check and re tension all ratchet straps. New webbing under load settles and stretches slightly, and cargo that is not perfectly rigid may compress slightly under the initial strap tension. Both effects reduce the pre tension in the strap below the level achieved during initial application. Re tensioning after the initial settling period restores the intended restraint force for the remainder of the journey.

Inspection, Maintenance, and Retirement of Ratchet Straps and Lashing Straps

Ratchet straps and lashing straps are safety critical components, and their condition must be actively maintained and monitored throughout their service life. Unlike a mechanical component that fails gradually and visibly, a webbing strap can sustain invisible internal damage from chemicals, UV exposure, or heat that causes sudden failure at a fraction of the rated load. The inspection and retirement criteria for lashing straps are defined in EN 12195 Part 2 and in the manufacturer's instructions; the following covers the key points that should be applied in any professional cargo securing operation.

Criteria for Removing Straps from Service

A ratchet strap or lashing strap must be immediately withdrawn from service and destroyed (not stored for possible future use) if any of the following conditions are present:

• Cuts, tears, or abrasion damage to the webbing: Any cut that penetrates more than 10 percent of the webbing thickness, any tear along the webbing edge, or surface abrasion that has removed more than one third of the webbing surface over a 100 mm length. Damaged webbing fails progressively under load, but the failure point cannot be predicted and the strap should not be used at any load.
• Chemical contamination: Exposure to acids, alkalis, oxidizing agents, or organic solvents can degrade polyester webbing without visible discoloration. Straps that have been contaminated by battery acid, fuel, or industrial chemicals should be removed from service even if visual examination shows no obvious damage, because the chemical degradation may be internal and invisible.
• Heat damage: Polyester webbing begins to lose strength at temperatures above 100 degrees Celsius and melts at approximately 250 degrees Celsius. Straps that have been in contact with hot exhausts, heat guns, or other thermal sources may show glazed or melted surface fibers. These straps have compromised strength and must be retired.
• Illegible or missing labels: A strap whose label is missing or so damaged that the LC, STF, and MBS ratings cannot be read cannot be verified to be the correct capacity for any given lashing application and must be taken out of service.
• Deformed or cracked end fittings or ratchet bodies: Any crack visible in a hook, ratchet body, or other load bearing metal component requires immediate retirement. A deformed hook that no longer closes fully, a ratchet body with a bent or cracked housing, or a pawl spring that does not maintain positive engagement with the ratchet teeth are all conditions that compromise the mechanical integrity of the restraint system.
• Known overloading: A strap that has been subjected to a shock load significantly above its LC rating, such as a sudden cargo shift that imposed the full weight of a sliding load on a single strap, should be retired even if visual inspection shows no damage, because the overload may have caused internal webbing fiber damage or permanent deformation of metal components that reduces future safe working capacity below the marked LC.

Storage and Routine Maintenance

Correct storage extends the service life of ratchet straps and lashing straps significantly. Store straps coiled or folded (not knotted) in a dry location protected from direct sunlight. Prolonged UV exposure degrades polyester webbing even when the straps are not in use; straps stored permanently in open flatbed or pickup truck beds without UV protection may suffer significant strength loss within 1 to 2 years of outdoor storage.

Ratchet mechanisms benefit from periodic lubrication of the pivot pins, spool bearings, and ratchet teeth with a light machine oil or corrosion inhibiting lubricant, particularly after exposure to water, mud, or salt spray. A ratchet mechanism that is stiff or difficult to operate requires more operator effort and produces higher than intended strap tension during the final tightening strokes, potentially overloading both the strap and the cargo. Clean contaminated ratchet bodies with clean water and a brush before lubricating; do not use solvent based cleaners on the webbing or near the webbing, as they can degrade the polyester fibers or weaken the stitched connections at the webbing ends.

Keep a written log of ratchet straps in professional use, recording the purchase date, the date of each inspection, and the nature of any damage or defects found at each inspection. A strap with no recorded inspection history provides no assurance of its current condition; documented inspection records demonstrate due diligence in cargo securing practice and provide the basis for a defensible safety management system in the event of an incident investigation.

Choosing the Right Strap: A Practical Decision Guide

Selecting the correct strap type and size for a specific cargo securing task combines the load capacity calculation with practical considerations about the cargo type, journey conditions, and operator environment. The following decision guide summarizes the key questions to answer before selecting a strap product.

Step One: Determine the Total Cargo Mass and the Required Restraint Force

Weigh the cargo or obtain the weight from documentation. Apply the EN 12195 Part 1 calculation or the equivalent national standard to determine the total restraint force required in the forward, lateral, and vertical directions. If friction from anti slip matting or cargo geometry contributes to restraint, account for this in the calculation to determine the net restraint force that must be provided by the straps. Divide the required restraint force by the STF of the strap being considered to determine the number of straps required. This is the minimum number, and adding one or two additional straps provides a practical safety margin against strap loosening during transit.

Step Two: Assess the Cargo Surface and Fragility

For hard, rigid cargo with no surface sensitivity such as steel beams, concrete blocks, and machinery with robust housings, ratchet straps provide the appropriate restraint force and are the correct choice at any cargo weight above approximately 100 kg. For cargo with sensitive surfaces such as wooden furniture, painted panels, and plastic components, plan the use of edge protectors and padding at all strap contact points, or select cam buckle straps if the cargo weight and journey conditions permit. For cargo that is both heavy and surface sensitive, the correct solution is ratchet straps with comprehensive edge and surface protection rather than cam buckle straps, which may be inadequate at the required load even if they cause less risk of surface damage.

Step Three: Match Strap Width to Load and Application

Select the webbing width that provides the required LC in the fewest number of straps consistent with the cargo geometry. Using many narrow straps where two wide straps would achieve the same restraint adds application time and complexity without safety benefit. For van deliveries with mixed light cargo, 25 mm cam buckle straps handle most loads adequately. For flatbed truck operations with heavy plant or machinery, 50 mm or 75 mm ratchet straps are standard. For specialized applications such as vehicle transport where cars are secured on car carriers, 35 mm to 50 mm ratchet straps with wheelbrace hooks are the industry standard configuration.

Both ratchet straps and lashing straps, correctly selected and properly applied, are highly effective cargo restraint tools. The errors that cause cargo to shift or fall in transit are almost always errors of selection where the strap is too light for the load, errors of application such as incorrect hook seating, missing edge protection, or an insufficient number of straps, or errors of inspection where a damaged strap that has not been identified is still being used. Investing the time to understand the rating system, learn correct application technique, and maintain straps in good condition is the practical foundation of safe and legal cargo securing in any transport operation.

Legal Responsibilities and Compliance When Using Ratchet Lashing

In most jurisdictions, the driver of a vehicle is legally responsible for ensuring that cargo is adequately secured before the vehicle moves onto a public road, regardless of who loaded the vehicle or specified the cargo securing method. In the European Union, Directive 2014/47/EU on roadside technical inspections and the national road transport regulations that implement it require that all cargo securing equipment used in commercial freight transport conforms to the EN 12195 standard series and that the number and rating of lashings used is sufficient for the cargo mass and transport conditions. Inspectors at roadside checks can require the driver to demonstrate that the lashing arrangement meets the calculation requirements of EN 12195 Part 1, and drivers who cannot demonstrate compliance are subject to fines and prohibition from continuing the journey until the cargo securing is corrected.

In practice, compliance requires that all ratchet straps and lashing straps used in commercial operations carry legible EN 12195 Part 2 markings with the LC, STF, and MBS ratings, that the straps are in serviceable condition as determined by the inspection criteria described in the previous section, and that the number of straps used is consistent with the calculated minimum for the cargo mass and friction conditions. Using unmarked or unrated straps sourced from general hardware suppliers as cargo lashings in commercial transport operations is a legal violation in most European countries, regardless of the apparent physical quality of the straps, because unmarked straps cannot be verified to meet the standard's performance requirements. Specifying and purchasing EN 12195 Part 2 compliant ratchet straps and lashing straps from reputable suppliers is therefore both a safety and a legal compliance requirement for professional transport operators.