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A Guide to ISO 12947 and the Martindale Tester

A Guide to ISO 12947 and the Martindale Tester
ISO 12947 consists of the following parts under the general title of Textiles - Determination of the abrasion resistance of fabrics by the Martindale method.
-Part 1: Martindale abrasion testing apparatus
-Part 2: Determination of specimen breakdown
-Part 3: Determination of mass loss
-Part 4: Assessment of appearance change

Martindale Abrasion Tester

What is the Martindale Abrasion Tester

In simple terms, the Martindale abrasion and pilling tester is a machine that predicts how well a fabric will hold up to real-life rubbing and friction. It works by gently rubbing fabric samples against a standard abrasive surface in a constantly changing motion, mimicking years of use in just hours.

The latest testers are smarter and more accurate than ever. They're equipped with a dual servo system for superior performance and can effortlessly generate a precise, figure-eight-like rubbing pattern (known as a Lissajous figure).

To handle different fabrics and standards, GESTER Martindale tester comes with six built-in testing modes (like Abrasion 60x60 or Pilling 24x24). The best part? Switching between them is as easy as a single click—no need for manual adjustments or changing parts.


Martindale Abrasion Tester


What is the ISO 12947


ISO 12947-1 Martindale abrasion testing apparatus

The Martindale abrasion tester specified in ISO 12947-1 is a specialized apparatus designed to simulate the friction and wear fabrics experience during use. The sample is mounted on a platform and subjected to a rubbing motion in a defined pattern under a specified pressure.

During testing, the fabric on the disc gradually wears away while data such as wear quantity, wear depth, and wear area are recorded. These metrics enable assessment of the fabric's abrasion resistance and comparison with other textiles.


ISO 12947-2 Determination of specimen breakdown

ISO 12947-2 forms part of this series of standards, specifically detailing the experimental method for determining fabric abrasion resistance via the Martindale procedure. A standard abrasive cloth is applied to the fabric surface under specified pressure, simulating the friction and wear encountered during use.


ISO 12947-3 Determination of mass loss

ISO 12947-3 forms part of this series, detailing how to use the Martindale method to determine fabric abrasion resistance. This method is used to evaluate the abrasion resistance of fabrics by measuring mass loss after a specified number of cycles.

Following testing, the mass loss of the sample is measured. Mass loss denotes the weight reduction incurred by the sample due to abrasion during the test. This value serves as an indicator of the fabric's abrasion resistance. An assessment of the fabric's durability can be derived from the mass loss results. Generally, a lower mass loss indicates superior abrasion resistance.


ISO 12947-4 Assessment of appearance change

ISO 12947-4 specifies a method for assessing the appearance change of fabrics after abrasion testing using the Martindale test euipment. designed to evaluate fabric wear resistance. Upon test completion, observe surface abrasion marks on the sample, serving as a key indicator for assessing abrasion performance. Examine changes in the sample's appearance during testing, including alterations in color, luster, and texture. The degree and frequency of these visual alterations enable classification of the fabric's abrasion resistance grade. Typically, superior abrasion resistance corresponds to a higher grade.

Arteries of the Future World | From Battery Factories to Data Centers, Who's Pumping the Pulse of the Era?

Challenges and Opportunities Brought by "Megatrends"

 

Currently, various "megatrends" are profoundly reshaping the world. These present significant social, economic, and cultural challenges, while also creating opportunities for sustainability and innovation.

 

With forward-thinking insights and cutting-edge product capabilities, KSB is providing efficient, reliable, and sustainable fluid solutions in critical scenarios.

 

 

From agricultural water security challenges and water supply and drainage safety in megacities to electric vehicle battery production, the circular economy and low-carbon manufacturing, and AI data center cooling, the following five examples demonstrate how KSB's products are empowering the future.

 

1. Electrification: Growing Demand for Batteries

 

 

Electrification, at its core, replaces fossil fuels with clean electricity. Consequently, demand for lithium-ion batteries will surge from approximately 750 GWh (gigawatt-hours) today to 4,700 GWh by 2040, as McKinsey predicts. The battery value chain spans mining, refining, material synthesis, battery cells, and recycling, and each link requires corrosion- and wear-resistant pumps and valves.

 

On the raw material side: KSB's LCC-M slurry pumps, with their highly wear-resistant structure, play a key role in handling solid-containing, highly abrasive, and corrosive media.

On the refining side: KSB's Magnochem standard chemical pumps, with their chemically resistant materials and a wide range of seal configurations, ensure safety and reliability when conveying high-temperature, highly corrosive, and hazardous chemical liquids.

 

KSB's products have higher efficiency and longer lifespan, helping battery factories using these products gain solid protection in controlling full lifecycle costs and improving system availability.

 

2. Urbanization: Deep Tunnel Water Management in Megacities

 

 

In 2023, 57% of the global population lived in cities. The United Nations predicts this figure will reach 68% by 2050. At the same time, the number of megacities with populations exceeding 10 million will increase to 40. Aging drainage systems, coupled with frequent extreme rainfall, increase the risk of urban flooding and overflows.

 

Deep drainage tunnels are an effective solution: large-diameter tunnels are built beneath cities to collect rainwater and sewage, which are then pumped to the surface for unified treatment.

 

KSB, leveraging its extensive hydraulic design experience, provides durable and efficient sewage pumping solutions, having successfully implemented deep tunnel projects in major cities such as London, Mexico City, and Auckland.

 

3. Water Scarcity: How to Safeguard Food and Water

 

 

According to the Food and Agriculture Organization of the United Nations, global food demand is projected to surge by 70% by 2050. As a result, we are depleting natural water resources, such as aquifers, faster than they can be replenished. This is not surprising, considering that 70% of the world's groundwater is used for irrigation.

 

Between 2000 and 2018, global per capita renewable water resources decreased by approximately 20%, particularly impacting arid regions such as North Africa, the Middle East, and parts of Europe and the United States.

 

To conserve water resources, arid countries and regions require more sustainable irrigation methods, such as drip irrigation or the use of recycled water. However, to promote the adoption of such systems, the solutions' lifecycle costs must be attractive.

 

 

KSB prioritizes efficiency and has rapidly expanded its business in the irrigation industry over the past decade by offering a diverse range of high-efficiency products and services for various irrigation scenarios. KSB provides Amarex KRT submersible sewage pumps, Etanorm single-stage end-suction centrifugal pumps, Multitec multi-stage centrifugal pumps, Omega double-suction volute pumps, etc., covering the entire chain of agricultural water needs from water intake, pressurization to long-distance transportation.

 

4. Circular Economy: Rethinking "Raw Materials"

 

 

The "Circular Gap Report 2024," released in collaboration between the Circular Economy Foundation and Deloitte, shows that global annual raw material consumption has nearly quadrupled over the past 50 years, reaching 10.14 billion tons in 2021, yet the recycling rate is only approximately 7.2%. This waste not only negatively impacts the environment but also creates raw material shortages and supply chain issues, further impacting the economy.

 

Achieving a "circular economy" is an important step toward addressing this issue, minimizing resource use and reusing materials.

 

 

The KSB EtaLine Pro vertical inline pump was designed with recycling in mind from the outset: it uses over 60% recycled raw materials. Its weight is significantly reduced thanks to a new motor with concentrated windings, saving 73% copper and 49% gray cast iron. Intelligent adjustment options allow the pump to flexibly adapt to changing demand. This prevents waste: if operating conditions change, the entire pump does not need to be replaced.

 

The number of components has also been reduced from approximately 40 to 15, simplifying logistics and conserving resources. Combined with offsetting unavoidable greenhouse gas emissions, these measures have reduced the pump's carbon footprint to virtually zero.

 

5. The AI ​​Era: The Data Center Cooling War

 

 

Artificial intelligence (AI) enables computers and machines to mimic human learning, problem-solving, and decision-making abilities. Discussions about AI often focus on its impact on productivity and employment.

 

However, one aspect often overlooked is the enormous energy consumption of AI.

 

By 2026, electricity consumption by data centers and AI computing power could reach 1050 TWh (terawatt-hours, representing one trillion watts of electricity consumed per hour), accounting for approximately 2% of global electricity consumption.

 

To meet the growing demands of AI, data centers must concentrate ultra-high power within limited space. Water, a common medium with a specific heat capacity approximately four times that of air, is becoming increasingly important as a coolant. Technologies such as rear-door cooling (RLC) and direct liquid cooling (DLC) use liquid directly to cool processors, reducing energy consumption and becoming the preferred choice for improving efficiency and reducing energy consumption.

 

 

KSB's Etanorm single-stage, end-suction centrifugal pumps, with optimized impellers and flow paths, ensure high efficiency, low noise, and wide operating range, providing a proven solution for water and water-glycol loops in data centers. Equipped with an IE5 motor, these pumps maintain excellent efficiency even under low-load conditions, helping to reduce system energy consumption and improve cooling reliability, laying a solid hydraulic foundation for sustainable computing power.

 

Using Sustainable Certainty

Navigating Uncertain Times

Solutions. Achieving a Better Life

In the face of profound change, the true foundational capability lies in deeply integrating efficiency, reliability, low carbon emissions, and full lifecycle value. Whether in battery factories, deep tunnel drainage, agricultural irrigation, green manufacturing, or data center cooling, KSB provides customers with future-oriented certainty through proven products and engineering experience.

Why do chemical plants tend to replace mechanical seals instead of repairing them?

In the daily operations of chemical plants, mechanical seals are crucial components for ensuring proper equipment operation and preventing leaks. However, when mechanical seals fail and need to be replaced, chemical plants often choose to replace them directly rather than repair them. This seemingly wasteful decision is actually driven by a complex set of considerations.

 

 

First

 

Chemical plants often operate in extremely harsh environments, requiring mechanical seals to withstand extreme conditions such as high temperatures, high pressures, and severe corrosion. Long-term operation causes significant wear and aging of seal components, making it difficult to restore their performance and reliability to their original levels even after repairs. Furthermore, the risk of repaired mechanical seals failing again within a short period of time is high, creating significant uncertainty and potential safety hazards for the plant's continued operations.

 

Second

 

Chemical plants have extremely high requirements for production stability and safety. A mechanical seal failure could lead to the leakage of hazardous substances, resulting in serious consequences such as environmental pollution and casualties. To minimize this risk, chemical plants prefer to use new, rigorously quality-tested mechanical seals to ensure long-term stable equipment operation and safe and reliable production.

 

Furthermore

 

From the perspective of maintenance cost and efficiency, repairing mechanical seals often requires specialized technicians and complex repair equipment, resulting in a lengthy repair process. Furthermore, procurement of the necessary parts and materials can be time-consuming. In contrast, simply replacing a mechanical seal with a new one can quickly resolve the problem, reduce equipment downtime, and improve production efficiency. Furthermore, new mechanical seals typically offer better performance and a longer service life, reducing overall maintenance costs in the long term.

 

In addition

 

Chemical plants' production processes and equipment are constantly evolving. New mechanical seals often utilize more advanced technologies and materials, better adapting to new production requirements and improving equipment efficiency. However, even after repair, older mechanical seals may not meet these new demands.

 

 

In summary, chemical plants' decision to replace mechanical seals rather than repair them is not a blind or wasteful decision. Rather, it is based on a comprehensive consideration of multiple factors, including the demanding production environment, high demands for production stability and safety, maintenance costs and efficiency, and technological advancements. This decision is intended to ensure the long-term stability of the chemical plant's operations, guarantee production safety, improve production efficiency, and achieve sustainable development.

FENGYU Pitman Arms Top-Tier Steering Essentials for Global Vehicles

As a leading producer of automotive components with more than three decades of professional experience, FENGYU has established itself as a dependable provider of Pitman Arms, delivering accuracy and sturdiness to the worldwide aftermarket. Focusing on vital steering parts, we supply an extensive selection of Pitman Arms compatible with 90% of vehicle makes—covering Japanese brands (Honda, Nissan) and American models (Ford, Dodge, Chevrolet, GMC, Jeep). This positions us as the preferred source for Honda Pitman Arms, Nissan Pitman Arms, Ford Pitman Arms, Dodge Pitman Arms, GMC Pitman Arms, as well as specialized variants such as Ford F-150 Steering Pitman Arms, Chevrolet Silverado Pitman Arms, Honda Ridgeline Pitman Arms, Nissan Titan Steering Pitman Arms, Jeep Wrangler Front Pitman Arms, and Dodge Ram 1500 Pitman Arms.
factory-direct Pitman Arm supplier
Built for Toughness: High-Grade Materials & Exact Manufacturing
At FENGYU, every Pitman Arm is designed to serve as the cornerstone of a vehicle’s steering system, starting with superior-grade materials. Our Pitman Arms feature robust forged alloy steel bodies, engineered to handle the strong torque and pressure of steering actions—whether for a Ford F-150 engaged in towing, a Jeep Wrangler tackling off-road terrain, or a Honda Ridgeline used for daily commuting. The key connection points are machined with precise tolerances, enabling seamless integration with the steering linkage and eliminating looseness that leads to unsteady steering.
To boost longevity, each Pitman Arm is treated with a multi-layer anti-rust coating, protecting it from corrosion caused by road salt and moisture. We also equip our Pitman Arms with durable grease fittings (when suitable), allowing for straightforward maintenance to keep the component rotating smoothly—prolonging its service life even in severe weather conditions. Hardware such as mounting bolts is made from high-tensile steel, ensuring a firm fit that won’t come loose over time, whether it’s a Chevrolet Silverado Pitman Arm or a Nissan Titan Steering Pitman Arm.
Customized for Your Business: Flexible OEM/ODM Options
Recognizing the varied needs of aftermarket distributors, wholesalers, and importers, FENGYU provides customizable OEM/ODM services for Pitman Arms to assist you in building your brand. You can select finishes like black oxide (for a tough appearance) or zinc plating (for added anti-corrosion protection), add laser-engraved logos or part numbers for easy brand identification, or choose personalized packaging—from branded colored boxes to custom plastic bags that match your marketing plan.
With a low minimum order quantity (MOQ) of 100 units per model, we make it simple to stock both popular items and specialized options without the burden of heavy inventory. Whether you need to restock Ford Pitman Arms for pickup truck markets or source Jeep Wrangler Front Pitman Arms for off-road enthusiasts, our flexible ordering system ensures you receive exactly what you require. Additionally, our direct-from-factory pricing gives you competitive profit margins, helping you maintain an edge in the aftermarket.
Quality You Can Rely On: Strict Testing & International Certifications
Quality is non-negotiable at FENGYU, and every Pitman Arm goes through rigorous testing to meet or surpass original equipment (OE) standards. We begin with raw material inspections—to confirm the strength and durability of the alloy steel—then conduct in-process checks to ensure dimensional accuracy. Before shipping, each Pitman Arm is tested for torque resistance (to ensure it can handle steering force without bending), rotation smoothness (to avoid stiff steering), and corrosion resistance (to endure harsh environments).
Our dedication to quality is supported by IATF 16949 and ISO 9001 certifications, meaning every FENGYU Pitman Arm—whether a Dodge Ram 1500 Pitman Arm or a GMC Pitman Arm—complies with global quality standards. You can have confidence that our parts will perform as reliably as original components, keeping end-users safe on the road.
Backed by Expertise & Dependable After-Sales Support
We stand behind every Pitman Arm we manufacture with a solid warranty and responsive after-sales service. If you encounter any problems—whether a fit issue with a Honda Ridgeline Pitman Arm or a performance question about a Jeep Wrangler Front Pitman Arm—our team is ready to assist. Simply share photos or videos of the issue, and we will provide prompt solutions, including refunds or replacements in your next order.
With over 30 years of export experience, we understand the importance of timely delivery. Our ready inventory of more than 100,000 Pitman Arms (including best-selling models like Ford F-150 Steering Pitman Arms and Chevrolet Silverado Pitman Arms) ensures fast turnaround for urgent orders, while custom OEM/ODM orders are completed within 30–45 days—keeping your inventory moving and your customers happy.
Partner with FENGYU for Steering Excellence
Whether you need to stock Honda Pitman Arms for sedans, Dodge Ram 1500 Pitman Arms for trucks, or Jeep Wrangler Front Pitman Arms for off-road vehicles, FENGYU combines quality, flexibility, and expertise to support your business. We don’t just supply parts—we build long-term partnerships, offering professional guidance to help you curate a product range that meets the unique needs of your market.
Looking for a trusted Pitman Arm supplier? Get in touch with the FENGYU team today to explore our full range, discuss customization options, and grow your business with parts that keep vehicles steering smoothly and safely.

Effect of Screw Lead in Worm Gear Screw Jacks

In the selection of a worm gear screw jack, the lead of the screw plays a critical role in determining the performance of the system. A larger lead means that the screw produces a longer linear displacement per revolution, which results in higher lifting speed and improved transmission efficiency. However, this also leads to weaker self-locking capability, making the system prone to back-driving and often requiring an additional braking device. Moreover, screw jacks with larger leads generally have lower load capacity and reduced positioning accuracy, making them more suitable for applications where high speed and efficiency are prioritized.
On the other hand, screw jacks with smaller leads operate at lower lifting speeds and lower transmission efficiency, but they provide stronger self-locking capability, higher positioning accuracy, and greater load capacity. They can reliably hold loads in place after stopping, which is particularly valuable in heavy-duty or precision applications. For this reason, small-lead screw jacks are commonly used in scenarios requiring heavy load handling, precise positioning, or self-locking, such as mold adjustment or clamping systems. In contrast, large-lead screw jacks are preferred in applications where fast lifting and high efficiency are needed, such as automated production lines or lifting platforms. Therefore, choosing the proper screw lead is a key factor in ensuring that the worm gear screw jack meets the specific requirements of an application.


How does the linear motion device achieve the angle adjustment function?

Common linear motion devices, such as screw jacks and electric linear actuators, not only allow for vertical lifting but also multi-angle adjustment. Electric linear actuators are a good choice for angle adjustment of screw linear products. As an extension of the screw jacks, their design features a tail end cap with a pin holder and a pinhole head, making installation simple and convenient for multi-angle adjustment. The electric linear actuator's travelling nut is designed with a telescopic tube, which improves overall protection and stability. However, the overall height is also doubled, which limits its use in applications with limited installation space. Due to its anchor-mounted design, screw jacks require additional trunnions and footing to achieve angle adjustment.

electric linear actuatorscrew jack actuator

The introduction and comparison of SWL series/SJA series/JWM series worm gear screw jack

The introduction and comparison of SWL series/SJA series/JWM series worm gear screw jack


SWL, SJA, and JWM are three widely used types of worm gear screw jacks, applied across machinery, automation, stage equipment, and heavy industries. While all three operate on the same worm gear and screw principle, they differ in structure, load capacity, precision, and typical applications.

The SWL series is a classic and cost-effective choice, suitable for general lifting, pushing, and adjustment tasks. Customers looking for reliable worm gear screw jack suppliers will find SWL to be a proven solution for moderate loads and standard industrial applications.

The SJA series offers a modular and compact design, providing higher precision and efficiency. With multiple configurations and optional accessories, it is ideal for automated production lines and multi-point synchronized systems. This series is often selected as a mini screw jack lifts for projects requiring smooth and controlled movement.

The JWM series is a reinforced heavy-duty model designed for low-speed, high-load, and highly stable operation. Compact variants are also available, making it suitable for applications needing screw jack actuator without compromising strength or reliability.

Below is a comparison of the three series:

Feature/Series

SWL Series

SJA Series

JWM Series

Product Type

Classic general-purpose

Modular precision type

Heavy-duty reinforced type

Structure

Mature,standard components

Compact, supports multi-jack use

Robust, durable, shock-resistant

Load Capacity

0.5T 100T

1T 50T

1T 120T

Precision & Stability

Standard

Higher than SWL

High, long-lasting

Typical Applications

Mold adjustment, stage lifts, general equipment

Automated lines, precision adjustment, synchronized lifting

Metallurgy, energy, heavy machinery

Cost

Low

Medium

MediumHigh


From above  we can see that SWL emphasizes versatility and cost-effectiveness, SJA focuses on precision and automation, and JWM provides durability and stability for heavy-duty applications. Understanding these differences helps you choose the most suitable series for their specific industrial requirements.