Copyright MHI © 2026 | All Rights Reserved

There are five categories of automatic guided vehicles in the market. Learn the key differences when picking the best one for your application.

Learn more about the systems that enable automatic guided vehicle systems to navigate as they maneuver loads safely through an operation.

In the dynamic world of material handling, where the efficiency and safety of operations hinge on the reliability of equipment, the often-overlooked heroes are the casters and wheels. Both play a pivotal role in the seamless movement of loads through industrial environments, yet the intricacies of selecting the right ones are often underestimated.Before you add to cart consider these common mistakes to avoid.Ignoring Load Limits: The Pitfalls of Overlooking Capacity RequirementsExceeding the recommended load capacity of casters can result in premature wear, damage, and failure. Most loads don't maintain an even weightacross the length and width of the platform. An off-center load could overload even the most durable casters. If a caster fails due to excessive weight, it can potentially cause injuries to workers and damage to products or infrastructure.It's crucial to accurately assess load requirements and choose casters that can accommodate the appropriate load capacity (including the weight of your cart!) Pro Tip: For optimal load distribution and safety, the common mistake of dividing the load capacity by 4 overlooks crucial factors. Instead, we advise dividing by 3 to account for potential uneven floors and to ensure stability. There are two reasons for this: First, on uneven surfaces, 3 or fewer casters bear a greater load, emphasizing the importance of ensuring the load can be adequately supported by 3 casters for operator safety and equipment integrity.Second, unpredictable load distribution necessitates planning for potential shifts, whether due to floor irregularities or weight imbalances. Adjusting the load rating accordingly ensures a proactive approach to prevent potential issues.Material Mismatch: Why the Right Wheel Matters for Your EnvironmentWheels are used in material handling because they significantly reduce the force required to move an object. Think about the force needed to push a heavy box across a floor. Static friction demands a specific applied force to initiate motion, and once in motion, dynamic friction insists on a consistent force to sustain it. The person exerting the force encounters a delicate balance: their applied force against the friction force generated by the box's weight and the floor. Therefore, it is crucial to understand the factors that impact caster performance.Will it navigate rough or uneven floor conditions? Is floor protection a priority? Does noise or speed play a role? Will the wheel be subjected to washdown or high-heat applications? These are the questions that guide the meticulous selection of the right caster and wheel.The complexities within polyurethane wheels alone can create paralysis in selecting the right type. Add in metal, nylon, rubber, and pneumatic, and it becomes even more crucial to comprehend the environment the wheel will be working in. Choosing caster materials unsuitable for the environment can have a significant impact on rolling resistance, triggering a waterfall effect of potential issues including compromised performance and durability, premature wear, failure, and a more strenuous work environment.Pro Tip: Casters and wheels come in various shapes, sizes, and materials to match unique performance requirements. Some roll-on tracks and temperatures up to 500F. Others bear 40,000-pound loads inside and outside the factory. Gather application data and choose an industrial caster/wheel manufacturer (or distributor) that you trust to help you select the right caster. Taking these extra steps will prevent headaches down the road. RELATED: Casters, Wheels, and Accessories GuideMaintaining Momentum: Why Speed Matters Most casters are rated for walking speed (3-5 mph), but sometimes the need for speed extends beyond this. Faster speeds require a caster that can not only withstand the increased velocity but also the increased severity of impacts. When towing loads at accelerated paces, it becomes imperative to assess not only the wheel material but the bearing type as well.Precision ball bearings can typically handle higher speeds and radial forces. These bearings are best for manual applications due to lower start-up forces. Wheels used in towing applications benefit from tapered wheel bearings as they run at higher speeds and encounter turns under load. These bearings are best for side load conditions as well as higher industrial speeds. Pushing the speed boundaries requires casters that can keep up without compromising performance or safety.Pro Tip: Larger wheel diameters and axles, more robust swivel construction, and bearing selection are critical components that enhance casters' overall performance and endurance at higher speeds. Overlooking Safety Standards: Don’t Put Your Workplace at RiskAccording to the Spine Research Institute at The Ohio State University, over 1.3 billion people suffer from musculoskeletal disorders that lead to low back, neck, shoulder, and other joint pain. While the causal pathways of these disorders are influenced by a multitude of factors, the workplace environment is a consideration.Adhering to safety standards ensures casters used in material handling meet specific load capacity, durability, and design criteria. This compliance is directly tied to workplace safety, reducing the risk of accidents, injuries, and damage to both personnel and property. Following safety standards helps create a safer working environment by ensuring casters can withstand the demands of the application.Pro Tip: Ask if the manufacturer is a member of the Institute of Caster and Wheel Manufacturers (ICWM), a Material Handling Institute (MHI) subgroup. Members are committed to safety and must adhere to certain criteria such as the American National Standard ANSI ICWM-2018, Vocabulary, Performance, and Testing Requirements for Casters and Wheels. This Standard is intended to guide owners, users, designers, purchasers, and/or specifiers of material handling equipment or systems.Neglecting Maintenance: The Silent Killer of Caster LongevityAccording to Forbes, unplanned/unscheduled downtime represents one of the costliest events at any manufacturing plant. Specific to casters, failing to perform regular maintenance, such as cleaning and lubrication, can lead to the accumulation of foreign objects and debris on caster components. This accelerates wear and tear, shortening the lifespan of the casters and increasing the risk of failure and unplanned downtime.Alternatively, planned downtime is a proactive approach to preventing breakdowns, and the build-up of contaminants within your caster to prolong the life of your equipment. Should you be using a caster that is not maintenance-free, it is important to implement a routine maintenance schedule that includes cleaning, inspection, and lubrication of caster components. Pro Tip: Have you considered maintenance-free casters? These casters minimize downtime and reduce maintenance costs by eliminating the need for lubrication or regular upkeep. Featuring sealed precision bearings and durable construction, they provide consistent performance, enhanced safety, and cleaner operation. Perfect for lean manufacturing, automated systems, and industries like aerospace, automotive manufacturing, healthcare, logistics, electronics assembly, cleanrooms, and renewable energy.As we understand the pitfalls explored above, it becomes evident that the right caster choice is not just about functionality but a commitment to safety, efficiency, and longevity. So, before you proceed with your next caster purchase, remember the cardinal rules: respect load limits, choose materials wisely, embrace routine maintenance, adhere to safety standards, and consider the often-underestimated factor – velocity. Each decision contributes to a chain reaction of reliability and performance in the workplace.Never consider casters and wheels a commodity; rather consider them the foundation of a safe, efficient, and enduring material handling environment.For more information visit hamiltoncaster.com or www.mhi.org/icwm.

Setting the Stage: Why 2026 Feels DifferentAccording to a recent study cited by a robotics-provider blog, “at least 76% of supply chainand logistics operations are experiencing notable workforce shortages,” with more thanhalf of warehouses reporting shortages. Additionally, a 2025 survey of warehouseoperators notes that “e-commerce demands, labor shortages and the need for spaceoptimization are driving demand for more warehouse automation.” Another articlesummarizing 2025 trends emphasizes how labor uncertainty, aging workforce, and highturnover make hiring/retention a persistent challenge for warehouses — pushing firmstoward automation & robotics adoption.There is clear, recent evidence that labor challenges and rising demand are fuelingautomation investments.Key Takeaways:• Persistent labor shortages that aren’t easing• Unpredictable demand patterns• E-commerce fulfillment still accelerating• Sustainability showing up in RFPs and purchasing criteria• A push toward flexibility rather than fixed infrastructureThe Automation Wave: What’s Actually Changing on the Floor.The global market for warehouse automation is estimated at USD 29.9 billion in 2025, withforecasts projecting ~USD 63.4 billion by 2030 (CAGR ~16.2%). Also, a closely relatedmarket — “material handling robotics” — is valued at USD 26.8 billion in 2025, with aprojected increase to USD 55.0 billion by 2032. A forecast for “AI robotics inwarehousing” reports a 2025 value of USD 15.3 billion and projects a huge expansion to~USD 100 billion by 2034 (CAGR ~23.2%). Industry sources describe a shift in 2025: whatonce was a “competitive advantage” is becoming a “critical necessity”. In a study byPMMI, 25% of warehouses are projected to have “some form of automation” by 2027 — upfrom 14% in 2017 and 18% at the end of 2021.The scale and growth rate of automation investments and the automation adoption — inconveyors, robotics, AMRs/AGVs, AS/RS, sortation systems, etc. — is accelerating sharply.Key takeaways:• AMRs/AGVs replacing long walking routes• Robotic pick stations and assisted picking• Conveyor upgrades and smarter sortation• Sensors, software, and data-driven flow decisionsThe Overlooked Piece: Mobility HardwareCasters may not headline budget meetings, but they shape everything from safety tothroughput. They determine how smoothly mobile workstations hand off to AMRs. Whethercarts track straight during autonomous towing. How vibration affects sensors, weld robots,or precision assembly. Whether floors wear prematurely under heavy dynamic loads. Inenvironments where robots and people coexist, even small mobility issues compound:Misalignment becomes a collision risk. Drift becomes a lost load. Vibration becomesa cycle-time penalty.It’s no exaggeration to say: automation works only as well as its mechanical interface withthe floor.Key Take aways:• Why mobile workstations, carts, fixtures, and tooling still need reliable casters• Where automation increases stress on wheels: directional shifts, dynamic loading,floor imperfections• How small mobility issues can derail a large automation investment (alignment,noise, vibration, drift, safety)Looking for the right caster solution for your application?ICWM connects you with the expertise, standards, and member companies to get it right.Explore more: https://www.mhi.org/icwm
