Knowledge

In modern warehousing and healthcare environments, a motorized system (Power Assist System) has become the preferred choice for reducing physical strain and enhancing operational safety. However, when faced with various specifications, many users find themselves confused between "Load Capacity" and "Torque."
How do you choose the most suitable motorized system? This article provides an in-depth analysis of the physical relationship between torque and load to help you optimize logistics and handling efficiency.
1. Load Capacity vs. Torque
In the R&D standards of HAION Caster, these two parameters represent a complementary relationship of "Power and Resistance" within the motorized system:
    ◆Load Capacity: Refers to the maximum weight the caster structure can support.
       This depends on HAION Caster's strictly selected bracket materials, tire hardness, and bearing strength.
    ◆Torque: The "rotational force" output by the electric motor.
       Put simply, torque determines whether the motorized system can successfully overcome friction
       to start moving under heavy loads and its ability to climb slopes.
2. The Key Formula of Torque and Load
According to physical principles, the required starting torque of a motorized system is directly proportional to the load weight:
    ◆Higher Load, Greater Friction: While the weight is primarily supported by the other four casters,
       an increase in total load significantly raises the friction during startup.
       The high-performance motor of the HAION Caster motorized system provides higher torque
       (power assistance) to break static friction, preventing a "heavy dragging" sensation.
    ◆The Impact of Wheel Diameter: For the same motor output, a larger wheel diameter relatively
       reduces the actual pushing force. Therefore, large-diameter wheels in a motorized system usually
      require a specific gear reduction ratio to boost torque.
3. How to Choose the Right Motorized System Based on Scenarios
When selecting a motorized system, please consider the following two dimensions:
   A. Ground Conditions and Gradients
   This is the most frequently overlooked factor. When a trolley encounters a slope,
   the required torque from the motorized system increases exponentially.
       ◆Flat Ground: Focus on continuous power output.
       ◆Slopes/Thresholds: Resistance spikes when encountering inclines or door thresholds.
         The HAION Caster motorized system automatically adjusts output to instantly boost power,
         ensuring heavy loads cross thresholds without stalling or spinning out.
   B. Load Safety Margin
   It is recommended that the rated load capacity be 20% greater than the actual maximum load.
   For example, if you plan to move a 250kg load, you should choose a motorized system rated
   for 350kg to ensure the motor operates long-term without overheating.
4. Technical Advantages of HAION Caster Motorized Systems
As a professional caster manufacturer, HAION Caster has deeply optimized torque distribution for its motorized systems:
    ◆Powerful Drive Technology: The motorized system possesses strong starting power,
      specifically solving the "hard-to-start" issue for heavy equipment, allowing medical
      and logistics carts to depart easily even when fully loaded.
    ◆Optimized Bracket and Spring Structure: Through high-quality bracket and
      suspension spring design, the system effectively absorbs ground vibrations
       and stabilizes load distribution. This ensures every bit of torque is precisely converted into effective propulsion.
5. Frequently Asked Questions (FAQ)
    Q1: Is higher torque always better? What are the side effects of excessive torque?
           A: Not necessarily. Without "Soft Start" technology, excessive instantaneous torque
           in a motorized system can cause the trolley to lunge forward, potentially damaging
           sensitive medical instruments or precision electronic components through vibration.
           Additionally, constant high-torque output increases motor heat, which can shorten
           the lifespan of the electronic control system.
    Q2: Why does the trolley feel heavier when "turning" than moving straight?
    Is this related to torque?
           A: Absolutely. "Lateral resistance" during a turn offsets forward torque.
           When a 600kg load turns, the friction between the tire and the ground increases
           due to the steering angle.
                ◆The HAION Advantage: Our motorized systems ensure torque is not
                interrupted during turns, preventing heavy equipment from getting stuck
                mid-curve and ensuring effortless maneuverability.
    Q3: Do environmental factors (moisture, chemicals) affect the
    torque performance of the motorized system?
           A: The physical torque remains constant, but "traction" changes.
           On wet or oily floors, the friction coefficient decreases, which may cause the wheels to slip,
           preventing torque from converting into thrust. For hospital environments
           requiring frequent cleaning, HAION Caster offers waterproof motorized systems with
           specialized materials to maintain high grip even on slippery surfaces,
           ensuring precise power transmission.