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Ergonomic Plate Casters
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Ergonomic caster wheels, commonly referred to as ergo casters, are designed to be more human-friendly, and suitable for a wide range of equipment across different environments.
Unlike traditional casters, which are often rigid and limited in movement, ergo casters are engineered to move in a multidirectional plane, mirroring the natural movements of humans. This design significantly reduces the resistance and effort required to maneuver equipment, making them a pivotal component in workplace ergonomics.
If you want to learn more about our ergonomic casters, contact us and our team of specialists is ready to assist you in making an informed decision for your caster requirements.
To understand how differential action reduces the “scuffing” that a wheel does, let’s break it down step-by-step. Scuffing, in this context, refers to the abrasive friction or scraping that occurs when a wheel turns, especially during directional changes, causing wear on both the wheel and the surface it moves across. Differential action is a mechanism that allows parts of a wheel to move independently, reducing this unwanted effect.
Consider a wheel designed with a “split” structure, where it is divided into two halves. When a cart or vehicle changes direction, these two halves can roll in opposite directions. This is the essence of differential action: instead of the entire wheel trying to pivot as a single unit—which would drag or scrape across the surface—the split design lets each half rotate in a way that aligns with the turn. For example, if a cart turns left, the outer half of the wheel might roll forward while the inner half rolls backward, minimizing lateral friction. This contrasts with a traditional single wide wheel, say one with a 3-inch tread width, where the entire tread must slide or scuff against the surface during a turn, requiring more effort and causing greater wear.
This principle can also be seen in wheels with a dual-round tread design, where two rounded edges contact the surface instead of a flat, broad tread. The rounded edges allow the wheel to distribute weight across two points, enabling each edge to adapt to the turn somewhat independently. This reduces the abrasive action that a single, flat tread would produce, as the wheel effectively “rolls” through the turn rather than dragging. The softer or harder materials used in these wheels—like a polyurethane with a Shore A 80-85 rating (softer) or Shore D 65 (harder)—further influence how they interact with the surface, with softer treads potentially cushioning the contact and harder ones resisting wear, both contributing to less scuffing.
In practical applications, such as Automated Guided Vehicles (AGVs), this concept extends to caster designs that emphasize smooth swivel action and stability. While not explicitly labeled as differential action, the smooth turning and reduced vehicle sway suggest that the wheels are designed to minimize friction and dragging, indirectly supporting the reduction of scuffing. The key idea across these examples is that by allowing independent or adaptive movement—whether through a split wheel or a dual-round tread—differential action prevents the wheel from fighting against the surface during turns.
In summary, differential action reduces scuffing by enabling parts of the wheel to move independently, such as the two halves of a split wheel rolling in opposite directions during a turn. This eliminates the lateral scraping that a single wide wheel would experience, requiring less effort and resulting in smoother, more efficient movement with less wear on the wheel and surface.
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Caster City® has been supplying the highest quality plate casters, stem casters and wheels since 1977.
This include all casters and wheels: stainless, pneumatic, stem (threaded stem and expanding rubber stem ), swivel, rigid, locking, total locking, replacement, chair and furniture casters. Caster wheels include phenolic, rubber, polyurethane, polyolefin, steel, v-groove.
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