Caster 101
PVC vs TPR Casters – Which is Better for Indoor Use?
Why Indoor Applications Need the Right Caster?
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Indoor environments often require quiet rolling, floor protection, and easy mobility.
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The wrong caster may cause noise issues, floor scratches, or premature wear.
PVC Casters – Key Features
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Cost-effective and widely available
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Harder surface, suitable for light to medium loads
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May produce more rolling noise on hard floors
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Normally no bearing to reduce cost
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Click here to see our PVC caster selections!
TPR Casters – Key Features
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Thermoplastic rubber (TPR) provides quiet and smooth rolling
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Excellent floor protection, no marking
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Good shock absorption for delicate environments
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Slightly higher cost but longer service life indoors
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Click here to see our TPR caster selections!
PVC vs TPR Casters – Comparison Table
Feature |
PVC Caster |
TPR Caster |
---|---|---|
Noise Level |
Moderate to loud |
Very quiet |
Floor Protection |
May scratch or mark floors |
Non-marking, floor-friendly |
Durability |
Decent, but less shock-absorbing |
High, resistant to wear indoors |
Best Use |
Budget carts, light-duty indoor use |
Medical carts, office, warehouse indoor trolleys |
Which Caster is Better for Indoor Use?
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For cost-sensitive projects, PVC is acceptable for light indoor applications.
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For professional environments (hospitals, offices, warehouses), TPR casters are better due to quiet performance and floor protection.
Conclusion
Both PVC and TPR casters have their place, but for indoor applications, TPR casters are generally the better choice thanks to their quiet, floor-safe, and durable performance.
👉 Contact us today to choose the perfect caster wheels for your indoor equipment!
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✉️ Email: [email protected]
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📞 TEL: +886-2-2999-1469
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📠 FAX: +886-2-2999-8377
Outdoor Caster Wheel Solutions for All Terrain
Need reliable wheels for construction carts, food stalls, BBQ trolleys, or heavy-duty platforms?
At UP & UP, we specialize in industrial caster wheels built for durability, shock resistance, and performance in tough environments. With over 50 years of manufacturing and export experience, we help you move smoother—anywhere, anytime.
✅ Why Choosing the Right Outdoor Caster Matters
Outdoor equipment often faces:
- Rough, uneven, or sloped surfaces
- Exposure to water, heat, chemicals, and pressure
- Static heavy loads or frequent movement
- Requirements for quiet, floor-safe mobility
That’s why we provide specialized caster wheels based on your use case and terrain type.
1. All-Terrain Casters – Shockproof & Reliable
🔹 Solid Rubber Casters (Hard Wheels)
Solid rubber wheels with high compression strength. Ideal for stationary setups or heavy loads placed outdoors for long periods.
Applications:
- Cement mixers
- Construction site carts
- Vending carts (stationary use)
👉 View Product – Solid Rubber Casters
🔹 Pneumatic Air-Filled Casters
Air-filled tires with elastic shock absorption. Ideal for bumpy roads and loose soil.
- Rim types: Plastic (rust-resistant), Steel (stronger)
- Tire types: Standard or high-rubber-content
Applications:
- Mobile construction carts
- Heavy-duty utility trolleys
👉 View Product – Pneumatic Casters
🔹 Flat-Free PU Foam Casters
PU foam-filled wheels combine the elasticity of pneumatic wheels with puncture-proof reliability.
Benefits:
- No flats, no leaks
- Low noise, high shock absorption
- Not suitable for >40°C continuous heat
Applications:
- Field carts and trolleys
- Mobile BBQ or vending setups
👉 View Product – PU Foam Flat-Free Casters
2. Heavy-Duty Casters – Stable Surfaces & High Loads
🔹 PU on Cast Iron Core Casters
Dual ball-bearing wheels with PU tread over iron core, offering strength and floor protection.
Applications:
- Platform carts
- Lift tables
- Industrial machinery
👉 View Product – PU Iron Core Casters
🔹 Rubber Hard Wheel Casters (4"–6")
Engineered for smooth and silent performance. The PH Series uses double ball bearings for enhanced movement under pressure.
Features:
- Wheel sizes: 4", 5", 6"
- Load capacity: up to 200KG
- Available types: Swivel, Brake, Fixed
- Noise-reducing design for concrete, tile, or resin floors
Applications:
- Stainless steel platform trucks
- Plastic utility carts
- Garage workbenches and DIY platforms
👉 View Product – Rubber Heavy Duty Caster with Double Ball Bearing (4"-6")
🔹 Scaffold Caster (Pipe Mount Type)
Designed for pipe-framed scaffold towers and heavy-duty platforms, ensuring load resistance and stability.
Applications:
- Scaffolding towers
- Construction carts
- Pipe-mounted equipment
👉 View Product – Scaffold Casters
3. Dual Indoor-Outdoor Casters – Quiet & Versatile
🔹 Silent Rubber Casters
Elastic rubber with dual ball bearings offers shock absorption and low noise—ideal for quiet environments and smooth surfaces.
Applications:
- Indoor/outdoor delivery carts
- Display racks
Storage trolleys
👉 View Product – Silent Rubber Casters
📊 Quick Comparison: Outdoor Caster Selection Guide
Product Type | Terrain | Load Range | Use Case Examples |
Solid Rubber Caster | Uneven, Stationary | High | Cement mixers, vending carts |
Pneumatic Wheel | Bumpy, Rugged | Medium-High | Construction, soil, loose gravel |
PU Flat-Free Caster | Semi-Rough | Medium | Mobile BBQ, field use |
PU on Iron Core | Flat, Indoor | High | Platform carts, lifters, workshops |
PH Series Rubber Caster | Flat/Semi-Rough | Up to 200KG | DIY platforms, logistics trolleys |
Rubber Caster w/ Double Bearings | Flat/Versatile | 120–200KG | General carts, workshop tools |
Scaffold Wheel | Construction Frame | Very High | Scaffolding towers, heavy structures |
Silent Rubber Caster | Indoor/Outdoor | Medium | Display racks, quiet transport |
Need Expert Help with Caster Selection?
At UP & UP, we provide caster solutions, bulk support, and fast customization.
Let our team help you find the right wheel for your job—whether for rugged terrain, quiet delivery, or heavy-duty mobility.
✉️ Email: [email protected]
📞 TEL: +886-2-2999-1469
📠 FAX: +886-2-2999-8377

Summary
Low gravity casters are engineered to offer reliable load-bearing performance in space-limited environments.
These casters help reduce equipment height while maintaining stability and mobility, making them ideal for precision machinery, medical equipment and compact industrial platforms.
1. Why Choose Low Gravity Casters?
Traditional casters may not fit under low-clearance equipment or may increase the risk of tipping. Low gravity casters solve this by minimizing mounting height while supporting heavy loads and ensuring smooth rolling.
Benefits include:
- Reduced equipment height
- Enhanced stability and safety
- Shock resistance and low vibration
- Ideal for confined spaces or sensitive machinery
2. Product Highlights from UP & UP
At UP & UP, we offer a specialized lineup of low gravity casters designed to meet professional needs:
🔹 Nylon Low Gravity Caster (1.1")
Compact and lightweight for space-constrained applications.
Ideal for toolboxes, compact trolleys, and precision devices.
🔹 Nylon Low Gravity Caster with Double Ball Bearing (2.5"–3")
Designed for enhanced smoothness and load capacity.
Great for laboratory or electronics equipment where stability and maneuverability are essential.
🔹 PU on Cast Iron Core Low Gravity Caster with Double Ball Bearing (1.5")
Combines noise-reducing polyurethane with the strength of a cast iron core—perfect for heavy-duty mobile platforms that operate in noise-sensitive environments.
🔹 PVC Twin Wheel Caster with Plain Bearing (2", 40/45mm wheel width)
Twin-wheel structure increases load distribution and directional control.
A practical choice for hospital equipment, compact office furniture, or instrument carts where space and maneuverability are critical.
🔹 Other Material Options (Request for Details)
We offer custom low gravity caster configurations upon request.
Contact us to explore OEM/ODM solutions tailored to your equipment design and usage environment.
3. Best Applications for Low Profile Caster Wheels
Low gravity casters are often used in:
- Medical carts and diagnostic equipment
- Laboratory automation systems
- Industrial robots, Automated Guided Vehicles (AGVs), robotic shuttles & mobile workstations
- Compact manufacturing platforms
- Under-machine trays
These casters enhance maneuverability without sacrificing performance or safety.
Conclusion
If your equipment demands stability, low clearance, and smooth motion, low gravity casters are the perfect fit.
With decades of manufacturing experience, UP & UP is your trusted source for high-performance caster solutions tailored to industrial and medical needs.
🔗 Contact us to get our full Low Gravity Caster Series or Request a Quote now!
- ✉️ Email: [email protected]
- 📞 TEL: +886-2-2999-1469
- 📠 FAX: +886-2-2999-8377
Conductive Casters: Industrial Applications & Advantages of ESD Wheels
Protect sensitive equipment and enhance workplace safety with the right conductive caster solution
Summary
Conductive casters—also known as ESD (Electrostatic Discharge) wheels—are essential for industries where static electricity poses risks to equipment, materials, or personnel.
Whether used in cleanrooms, hospitals, or production lines, these casters effectively eliminate static buildup and ensure smooth, silent, and safe mobility.
In this article, we explore their features, industrial applications, and selection tips to help you choose the ideal solution.
Key Features of Conductive Casters
- Reliable Static Dissipation
Conductive wheels quickly discharge accumulated static electricity to prevent interference with sensitive electronics and reduce fire risks in volatile environments. - Durable & Pressure-Resistant
Our casters are made of high-resilience TPR (Thermoplastic Rubber), offering exceptional wear resistance and pressure endurance for long-term use. - Smooth & Silent Operation
Equipped with precision ball bearings, our conductive casters glide quietly—ideal for quiet workspaces such as hospitals or labs. - Anti-Dust Attraction
Special surface treatments reduce particle adhesion, helping maintain cleanliness in sterile or cleanroom environments.
Applications in Industrial Settings
- Cleanroom Equipment
ESD control is critical in semiconductor and pharmaceutical facilities. Our conductive casters help minimize static buildup and airborne contamination. - Medical Devices & Hospital Trolleys
Used in diagnostic carts, surgical trolleys, and stainless steel medical carts, conductive wheels reduce shock risk and ensure smooth mobility on delicate flooring. - Manufacturing & Assembly Lines
From mobile tool carts to ESD workstations, conductive casters ensure safe and efficient operations in electronics or precision manufacturing environments. - Warehouse & Logistics
Improve operational safety by using ESD casters in static-sensitive areas, such as automated systems, mobile racks, and packaging stations.
How to Choose the Right Conductive Caster
When selecting conductive casters for industrial use, consider the following:
Selection Criteria | Key Consideration |
ESD Resistance Range | Aim for impedance between 10⁴–10⁶ Ω for balanced conductivity and safety. |
Load Capacity | Choose the proper size (e.g., 3", 4", 5") based on expected load and application. |
Material & Durability | Opt for TPR wheels with ball bearings for quiet, long-lasting performance. |
Mounting Types | Swivel, rigid, or brake-equipped—choose based on equipment type. |
UP & UP Conductive Wheel Options
We offer high-quality TPR conductive casters in:
Wheel Material | TPR (Thermoplastic Rubber) | ||
Bearing | Ball Bearing | ||
ESD Impedance | 10⁴ ~ 10⁶ Ω | ||
Mounting Types | Plate, Threaded Stem | ||
Types | Rigid, Swivel, Swivel with Brake | ||
Wheel Diameter | 3" (75mm) | 4" (100mm) | 5" (125mm) |
Load Capacity | 50 kg | 80 kg | 100 kg |
👉 View Product Page: TPR Conductive Casters | ESD Caster with Ball Bearing (3"-5")
Conclusion
Conductive casters are critical in modern industrial operations where static control, durability and smooth movement matter.
By selecting the right ESD caster based on your working environment, you can reduce risks, enhance safety, and extend equipment lifespan.
- ✉️ Email: [email protected]
- 📞 TEL: +886-2-2999-1469
- 📠 FAX: +886-2-2999-8377
Summary:
Casters are designed to make moving equipment and objects easier.
However, choosing the wrong caster may lead to equipment damage, floor scratches, caster failure, or safety hazards.
Selecting the right caster is not just about picking a wheel - it’s about ensuring safety, improving efficiency, and protecting your equipment and floors.
This guide covers the three most important factors: load capacity, maneuverability, and application environment.
1. Load Capacity: How Much Weight Can Your Casters Handle?
Selecting the correct load capacity is the first and most crucial step. Each caster has a maximum load capacity per wheel specified by the manufacturer. When using multiple casters, calculations are required to account for uneven floor conditions and weight distribution.
Basic Formula:
T = (E + Z) ÷ M
- T = Load capacity per caster
- E = Weight of the cart or equipment
- Z = Weight of the load
- M = Effective caster load coefficient (varies by caster arrangement)
Common Coefficients:
Caster Setup | M Value |
Four–wheel cart (even floor) | 3 |
Four–wheel cart (uneven floor) | 2 |
Six–wheel cart | 4 |
Example Calculation:
If the total load is 150kg and you are using 4 casters, the safe calculation is:
150kg ÷ 75% ÷ 4 = 50kg per caster
Adding a 25–30% safety buffer is recommended to prevent overloading.
Selecting casters with an appropriate load rating extends caster life and ensures safer operation.
2. Maneuverability: Make Movement Easier and Safer
Smooth movement reduces worker fatigue and increases operational efficiency. Several design elements affect caster maneuverability:
Swivel vs Rigid Casters:
- Swivel Casters rotate 360°, providing excellent maneuverability for tight spaces or dynamic movement.
- Rigid Casters roll only forward and backward, providing stability for straight-line transport.
Many applications use two swivel and two rigid casters for a balanced setup.
Offset Distance:
- Longer offset = Easier to turn but lower load capacity
- Shorter offset = Higher load capacity but less maneuverability
Wheel Diameter:
- Larger wheels are easier to roll, require less force, and handle cracks or uneven surfaces better. Think of it like riding a bicycle—the larger the wheel, the smoother and more efficient the movement.
- However, larger wheels raise the center of gravity, which may affect the stability of cabinets, medical trolleys, or machinery. This factor must be considered when choosing wheels for taller equipment.
3. Application Environment: Match Casters to Your Working Conditions

Different operating environments require different caster materials and features to maintain safety and performance. Here are common factors to consider:
Surface Conditions:
- For uneven floors, cracks, or barriers, choose larger diameter wheels that can cross obstacles without jamming.
- For smooth floors, use soft tread materials to avoid scratching.
Noise & Floor Protection:
- For quiet or indoor environments like hospitals, offices, or schools, use TPR (Thermoplastic Rubber) or PU (Polyurethane) wheels.
- These materials are elastic, shock absorbent, low-noise, and non-marking, making them ideal for tile, wood, or delicate flooring.
Chemical Resistance:
- In environments exposed to chemicals, fuels, oils, or cleaning agents, Nylon and PU wheels are recommended due to their chemical resistance.
Low Temperature Use:
- For conditions below 0°C, standard bearings may freeze and malfunction.
- Use casters with low-temperature lubricated bearings to prevent freezing and ensure smooth operation in cold storage or freezer environments.
Static Control:
- For sensitive environments where static electricity must be controlled, select conductive or anti-static casters to ensure safe operatio
Conclusion:
Choosing the right caster is a combination of accurate load calculation, mobility planning, and material selection for the environment. By carefully considering these factors, you can:
- Reduce maintenance and downtime
- Protect floors and equipment
- Improve safety and ergonomic handling
- Extend caster and equipment lifespan
For custom caster solutions, OEM/ODM services, logistic trolleys, hand trucks, or special application casters,
contact UP & UP Casters, your trusted manufacturer and global supplier 👉🏻 [email protected]