Go to homepage

02/06/2025

AdobeStock_282276141

Pre-tensioning force and lashing force of lashing straps: Safety when securing loads

Properly securing loads is essential to avoid road traffic accidents. Two key terms play a crucial role: the pre-tension force and the lashing force of lashing straps . But what exactly do these terms mean, and why are they so important? In this article, you'll learn everything you need to know to securely secure your load .

What is the preload force?

The pre-tension force ( STF - Standard Tension Force ) indicates the force with which a lashing strap is tightened when tightened with a ratchet or other tensioning device. This force is crucial for the load's holding power and depends on several factors.:

  • The ratchet used
  • The pulling force of the user
  • The friction between the load and the loading area
The pre-tensioning force is particularly important when lashing down the load , as it increases the pressure on the load and thus the friction between the load and the loading surface . The higher the friction, the better the load holds.

The importance of lashing force

The lashing capacity ( LC - Lashing Capacity ) indicates the maximum force a lashing strap can absorb before it breaks. This is usually given in daN (decanewtons) and describes the load limit of the strap. Important factors are:

  • The material thickness of the lashing strap
  • The processing of the seams
  • The condition of the belt
The lashing force is crucial for the correct selection of lashing straps to prevent the load from slipping or tipping over. Sufficient lashing force ensures that the straps can withstand the forces encountered .

Large range of lashing straps at Sandax

Lashing strap, 10m, 50mm, LC 2500 daN, two-piece, STF 500, ERGO long lever ratchet
With a length of 10 meters, a width of 50 millimeters and a lashing capacity of 2500daN, this two-part lashing strap stands for strength and reliability. What makes this lashing strap special is the ERGO long-lever ratchet , which not only embodies technological advancement but also offers unique ergonomics. With this ratchet, lashing and securing your load becomes an effortless task. Sandax stands not only for performance, but also for first-class workmanship and durability – the lashing strap is a reliable companion for all your demanding transport tasks. If you're looking for the highest quality, innovative design, and uncompromising safety , the two-piece Sandax 10m ERGO lashing strap is your best choice. Invest in the safety of your cargo and trust in Sandax quality. 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing. This tensioning strap is TÜV certified according to ISO 9001: Find even more 50mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 50mm lashing straps ? Simply click the button to go to our category with all 50mm lashing straps . All 50mm tensioning straps at a glance

From €19.04*
Lashing strap, 8m, 75mm, LC 5000daN, STF 500daN, two-piece, Heavy XXL ratchet
Like our 10m XXL strap, this 8m strap also offers an impressive width of 75 millimeters and a lashing capacity of 5000 daN . This two-part lashing strap is unmatched in strength and resilience. The Heavy XXL ratchet, exclusive to Sandax, gives this lashing strap unparalleled security. With an STF value of 500 daN, it enables comfortable and powerful securing of your load . Whether you're transporting heavy machinery or bulky cargo, you're playing it safe with this XXL lashing strap . Invest in top quality and trust Sandax. 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing.

From €38.08*
Lashing strap, 10m, 75mm, LC 5000 daN, two-piece, STF 500, Heavy XXL ratchet
The largest of our lashing straps. With a length of 10 meters , an impressive width of 75 millimeters , and a lashing capacity of 5000 daN, this two-part lashing strap sets new standards in strength and resilience. The Heavy XXL ratchet , exclusive to Sandax, gives this lashing strap unparalleled power. With a STF value of 500 daN, it allows for comfortable and powerful securing of your load . Whether you're transporting heavy machinery or bulky cargo, you're playing it safe with this XXL lashing strap . Invest in top quality and trust Sandax. 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing.

From €42.84*
Lashing strap, 10m, 35mm, LC 2000daN, STF 200daN, one-piece, standard ratchet
Whether for professional freight transport or private use, proper load securing is crucial. The one-piece lashing strap from Sandax , measuring 10 meters long and 35 mm wide, is ideal for securing boxes, machinery, furniture, and much more. With a lashing capacity (LC) of 2000 daN and a standard pre-tension force (STF) of 200 daN, this strap is suitable for a wide range of applications and ensures maximum safety during transport . The integrated standard ratchet made of robust steel allows for quick and easy application. Technical product details at a glance Design : One-piece with standard ratchet Length : 10 meters Width : 35 mm Lashing force (LC) : 2000 daN (straight pull) Preload force (STF) : 200 daN Material : High-strength, UV-resistant polyester Color : Red Certified : According to DIN EN 12195-2, TÜV and GS tested Labelling : Permanently sewn with all required safety information Your benefits at a glance ✅ Versatile – ideal for transport with trailers, vans, trucks or in the workshop ✅ 10 meters long – ideal for securing large or bulky loads ✅ Easy handling – thanks to the ergonomic standard ratchet with high operating comfort ✅ Durable & weatherproof – the polyester webbing is resistant to moisture, UV rays and abrasion ✅ Certified & compliant with standards – meets all requirements of DIN EN 12195-2, for safe use in commercial transport ✅ Cost-effective & reusable – long service life when used properly ✅ Safety label on the belt – with information on LC, STF, manufacturer and standard for quick check Typical applications for the 10m tensioning strap from Sandax Transport security in commercial freight transport Fastening furniture, pallets or machines Securing building materials on flatbed trucks and trailers Use by forwarding companies, tradesmen, event logistics or private removals Why Sandax? Sandax stands for quality, reliability, and safety in the field of load securing . With decades of experience and certified products, Sandax is one of the leading suppliers in Germany. Every lashing strap is tested and meets the highest standards – for your safety on the road. Order now and transport safely Rely on proven brand quality from Sandax – and ensure a secure hold during every transport. Combine the strap with other Sandax products such as edge protectors , storage bags , or anti-slip mats for a professional securing system. This tensioning strap is TÜV certified according to ISO 9001: Find even more 35mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 35mm lashing straps ? Simply click the button to go to our category with all 35mm lashing straps . All 35mm tensioning straps at a glance

From €7.50*
Set of 6, clamp lock lashing straps, 3 m, 25 mm, LC 250 daN, blue
With the 6-piece set of 3m clamp lock straps from Sandax , you're making the optimal choice for transporting light loads from A to B. With a width of 25mm and a lashing capacity of 250 daN, these high-quality clamp lock straps will keep your light load secure. The blue polyester webbing features robust clamp locks that allow for quick, easy, and secure locking. Our state-of-the-art strap set is ideal for everyday use at home or in businesses.

€15.35*
Set of 2, 6 m lashing straps, 35 mm, LC 1000 daN, STF 220 daN, two-piece, black, with reflective stripes
Our 6 m long lashing strap with reflective stripes is the ultimate solution for securing your cargo while traveling! This two-piece, 35 mm wide strap gives you peace of mind when transporting your goods, as it has a lashing capacity of 1000 daN . The integrated reflective stripes ensure particularly good visibility in traffic. Get ready for safe transport with this lashing strap . Find even more 35mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 35mm lashing straps ? Simply click the button to go to our category with all 35mm lashing straps . All 35mm tensioning straps at a glance

€23.68*
Set of 6 clamp lock lashing straps, 6 m, 25 mm, LC 250 daN, red
Our set of six 6m long red clamp buckle straps ensures your cargo is secure during transport. Made from high-quality materials, these 25mm wide straps have a lashing capacity of 250 daN and offer maximum security, so you can be sure that every secured item will remain safe throughout your entire journey. Thanks to the high-quality clamp buckle, the strap can be attached effortlessly and easily, making it ideal for private use, e.g., for your next trip with a caravan or motorhome . With their reliable, secure hold, these red clamp buckle straps are the perfect product for anyone who values the security of their belongings.

€22.49*
Set of 2, 6 m lashing straps, 25 mm, LC 400 daN, STF 216, two-piece, neon green, with S-hook with safety catch
Introducing our 6 m lashing strap , which is 25 mm wide and has a lashing capacity of 400 daN . This two-piece strap is perfect for long distances and demanding situations where you need extra security and reliability . Equipped with an S-hook and safety device, the strap is suitable for all types of travel and transport. Likewise, in private use—whether transporting furniture for a move or leisure equipment for a weekend getaway—the peace of mind that your cargo is secure can make all the difference. The perfect accessory for use on and off the road . Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

€20.11*
Lashing strap, 8m, 50mm, LC 2500 daN, two-piece, STF 300, short lever ratchet, for Krone Trailer
This high-quality , two-part tensioning strap is made of 50mm wide woven polyester webbing and is ideal for securing loads on Krone trailers. The fixed end is 0.5m long, and the loose end is 7.5m long. It features low stretch of less than 5% and solid tensile strength. Our 8m lashing strap for Krone trailers has an LC value of 2500 daN. The ratchet has a pre-tensioning force of 300 daN and can be easily re-tensioned if tensile force is lost . The ratchet strap complies with DIN EN 12195-2 and is TÜV-certified . There are 320 pieces on a pallet, 10 pieces per carton. 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing.

From €15.35*
Set of 4, 4 m lashing straps, 25 mm, LC 900 daN, one-piece, red
These high-quality, one-piece 4 m tie-down straps are 25 mm wide and have a LC value of 900 daN, making them ideal for securing your cargo . The red color gives these straps a striking look that's guaranteed to stand out from the crowd . Whether you're a hobby camper, a van driver, or simply a busy courier, these tie-down straps are perfect for everyday use and will keep your valuable belongings safe and secure, guaranteed during every transport! Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

€20.11*
Lashing strap, 12m, 50mm, LC 5000 daN, one-piece
This heavy-duty tensioning strap is 50 mm wide and offers a lashing capacity of 5000 daN . Manufactured according to the quality standards of DIN EN 12195-2 and TÜV-certified, this strap features a short-lever ratchet that allows you to easily secure your load. Whether you're transporting heavy goods or stabilizing bulky cargo, this 12-meter-long strap will get the job done. The Sandax lashing strap delivers the high performance you expect. 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing. This tensioning strap is TÜV certified according to ISO 9001: Find even more 50mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 50mm lashing straps ? Simply click the button to go to our category with all 50mm lashing straps . All 35mm tensioning straps at a glance

From €17.73*
Set of 6, clamp lock lashing straps, 5 m, 25 mm, LC 250 daN, olive green
Our set of six 5m cam buckle straps offers an efficient way to secure your belongings during transport or storage. These high-quality straps are 25 mm wide and have a lashing capacity of 250 daN , making them ideal for home use. Equipped with a high-quality cam buckle made of durable material , these durable straps easily handle loads of all shapes and sizes , ensuring your cargo remains securely fastened.

€20.11*
Lashing strap, 6m, 25mm, LC 400daN, STF 120daN, two-piece, with flat hook for rack system
6m lashing strap, two-part - 25mm - LC 400/800daN, STF 120daN - Standard ratchet Loose and fixed end with flat hook for rack system - Color: gray PU=40 pieces/box, 1280 pieces/pallet manufactured according to DIN EN 12195-2, TÜV certificate Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

From €12.49*
Set of 6, clamp lock lashing straps, 3 m, 25 mm, LC 250 daN, black
With the set of 6 3m clamp lock straps from Sandax, you're making the optimal choice for transporting light loads from A to B. With a width of 25mm and a lashing capacity of 250 daN, your light load is safely secured with these high-quality clamp lock straps . The black polyester straps are equipped with robust clamp locks that allow for quick, easy and secure locking. Our state-of-the-art belt set is ideal for everyday use at home or in business.

€15.35*
Set of 6, clamp lock lashing straps, 4 m, 25 mm, LC 250 daN, red
With this set of six 4m long clamp lock straps, you can transport your items safely. Each strap is 4 meters long, 25 mm wide , and offers a lashing capacity of 250 daN . They are equipped with a robust clamp lock and are finished in red. These straps are perfect for home use and allow you to transport all kinds of items safely without worry.

€17.73*
Lashing strap, 8m, 50mm, LC 2500daN, STF 350daN, two-piece, short lever ratchet
This two-part lashing strap , 8 meters long and 50 millimeters wide, is specially designed for demanding applications in professional load securing . With its high load capacity of 2500 daN in a straight line and a pre-tensioning force of 350 daN, the tensioning strap ensures a firm hold and reliable protection for a wide variety of transported goods . Thanks to its robust design and manufacturing in accordance with DIN EN 12195-2 and TÜV certification, the strap meets all relevant safety and quality standards. Features and Benefits ✅ Two sections per belt: fixed end with 0.4 m and loose end with 7.6 m, both with claw hooks ✅ High-quality short lever ratchet for efficient preload ✅ Durable webbing with a width of 50 mm and low stretch of <5% ✅ Load capacity up to 2.5 tons (LC 2500 daN) ✅ TÜV-certified and manufactured according to current standards Technical details Length : 8 m (fixed end 0.4 m / loose end 7.6 m) Width : 50 mm Lashing Capacity : 2,500 daN Preload force : 350 daN Color : Red Certification : DIN EN 12195-2, ISO 9001 TÜV Packaging unit : pallet=320 pieces, 10 pieces per carton Typical applications of the 8m lashing strap Load securing on trucks and vans Fixing of pallets and boxes Securing machines and heavy components Storing construction site materials Application in industrial freight transport Your added value when purchasing With Sandax lashing straps, you get proven brand quality and a straightforward, secure solution for a wide range of load securing tasks. These lashing straps are ideal for users who value durable materials, reliable functionality, and compliance with load securing standards . 🚚 Note : These straps are suitable for use as truck tensioning straps and meet the current standards for load securing. This tensioning strap is TÜV certified according to ISO 9001: Find even more 50mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 50mm lashing straps ? Simply click the button to go to our category with all 50mm lashing straps . All 50mm tensioning straps at a glance

From €12.49*
Lashing strap, 8m, 25mm, LC 1000daN, STF 150daN, one-piece, standard ratchet
With the robust 8m tensioning strap from Sandax, you can secure your load reliably and flexibly – whether on trailers, vans, or for personal use . With a length of 8 meters and a width of 25 millimeters, this strap offers optimal conditions for securely securing a wide variety of goods and preventing transport damage. The strap is equipped with a sturdy standard ratchet that allows for quick and precise tensioning . Product advantages of the 8m lashing strap ✅ Versatile length and width : 8m tensioning straps with 25mm strap width for a wide range of applications ✅ Load capacity : up to 1 ton (LC 1000 daN), ideal for medium-heavy loads ✅ Quality material : Durable polyester webbing with low stretch for high safety ✅ Ratchet : Comfortable standard ratchet for easy attachment and re-tightening of the load ✅ Use : Ideal for private and professional use ✅ Certification : TÜV-certified according to DIN EN 12195-2 and ISO 9001 for tested safety Technical details Length : 8m Width : 25mm Load capacity (LC) : 1000 daN (1 ton) Preload force (STF) : 150 daN Webbing material : High-strength polyester Ratchet : Standard ratchet Color : Red Standard : DIN EN 12195-2, TÜV, ISO 9001 Areas of application for this tensioning strap Load securing on trailers and transport vehicles Securing building materials and machinery Fixing of boxes and pallets Ideal for outdoor and leisure activities such as camping or moving Why buy Sandax tension straps? Sandax combines proven quality with superior user-friendliness and rapid availability. The 8m 1t tensioning straps offer a reliable, durable solution for securing your loads – whether for commercial or private use. Benefit from easy handling and the safety guaranteed by international standards. This tensioning strap is TÜV certified according to ISO 9001: Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

From €5.89*
Set of 4, 6 m lashing straps, 25 mm, LC 900 daN, one-piece, black
Lashing strap with ratchet, 4 pieces per set Length: 6m, belt width 25mm, belt color black, 1-piece, LC 900 daN, black ratchet according to EN 12195-2, TÜV certified ZTN 63079 098 990 PU=14 sets of 4 pieces/box, 448 sets/pal Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

€22.49*
Set of 2 - 3.65 m automatic lashing strap, 25 mm, LC 340 daN, with S-hook with safety device
At 3.65 meters long and 25 millimeters wide, these automatic lashing straps offer the perfect combination of comfort and stability. The innovative automatic system allows for lightning-fast and precise retraction of the straps . The attached S-hooks not only provide a secure hold but also feature an additional safety feature that prevents accidental release. This ensures a particularly reliable and stable connection to your lashing points . With a lashing capacity of 340 daN per strap, you can rely completely on the safety of this set. No matter what valuable goods you are transporting, this set of two automatic lashing straps offers you the ultimate in safety and peace of mind on the road. Experience comfort, safety, and outstanding quality. Deliver your cargo to its destination worry-free—an indispensable duo for demanding transport needs ! Find even more 25mm tensioning straps at Sandax Is this strap not the right length, or are you looking for other 25mm lashing straps ? Simply click the button to go to our category with all 25mm lashing straps . All 25mm tensioning straps at a glance

€21.30*

Practical application: How to secure your load correctly

  1. Calculating the required lashing force : Determine the weight and nature of the load to select the correct straps.
  2. Use suitable ratchets : Use ratchets with high pre-tensioning force to ensure secure fixation.
  3. Consider friction : Use anti-slip mats to increase friction and reduce the need for lashing forces.
  4. Regular inspection : Check the belts for damage and correct fit before every journey.

Conclusion on the subject of pre-tensioning force and lashing force

The correct application of pre-tensioning and lashing force is the key to secure loads . Understanding the physical principles and using the appropriate tensioning straps minimizes the risk of accidents and ensures safe travel. You can purchase certified tensioning straps in our online shop – in various lengths and widths.

Ensure your load is optimally secured – because safety comes first!

10-point checklist for load securing

Download our free PDF checklist with 10 important points for load securing .

Download load securing checklist