Caster wheels for medical and health care

Hi! Welcome to WheelsWaycaster.com. Let us guide you through this medical casters page.

Medical casters are essential components designed to facilitate the smooth movement of medical equipment within healthcare facilities. 

At WheelsWay, we offer a comprehensive range of medical casters and wheels to the requirements of hospitals and medical practices. Whether it’s stainless steel casters or nylon-bodied casters, our products are rust-resistant and can withstand exposure to chemicals and washdowns. 

What are medical casters?

Medical casters are specialised wheeled devices consisting of wheels and brackets that are mounted on medical equipment, furniture or fixtures for ease of movement in medical environments such as hospitals, clinics and laboratories.

They can be attached to a variety of equipment, including medical beds, surgical tables, medical devices, and patient chairs.

These casters often have features such as antimicrobial properties, central-locking mechanisms, and non-marking wheels, which ensure safe and efficient movement of equipment while maintaining a hygienic environment.

Key features of medical casters

Easy to clean

Designed with ease of maintenance in mind. Built from materials that are resistant to staining and corrosion, they can be effortlessly cleaned to maintain a hygienic environment in medical settings

Versatility

With a wide range of sizes, load capacities, and configurations, our medical casters offer unparalleled versatility. Whether you need casters for hospital beds, medical carts, or equipment stands, we have the perfect solution to suit your specific requirements.

Hygienic design

We understand the importance of maintaining a clean and sanitary environment in healthcare facilities. That's why our casters feature hygienic designs, including sealed bearings and smooth surfaces, to prevent the buildup of dirt, debris, and bacteria.

Maneuverability

Smooth and precise maneuverability is essential in busy medical environments. Our casters are engineered with precision bearings and swivel mechanisms, allowing for effortless navigation around tight corners and crowded spaces.

Durability

Medical equipment undergoes heavy use and must withstand the rigors of daily operation. Our casters are built to last, with rugged construction and high-quality materials that ensure long-term durability, reducing the need for frequent replacements.

Medical caster applications

Some of our featured products

Our OEM service

Designing and manufacturing custom casters for an OEM project involves several stages, we follow a detailed step-by-step process to ensure that your project runs smoothly and without any problems

  • Define requirements: Understand the customer’s specific needs and requirements. Consider special attachments, test standards, and industry standards. Give suggestions to improve the caster performance if the customer wants to eliminate the failure issues from their existing casters. 

  • Material selection: Select appropriate wheel materials for the casters based on factors like load capacity, environmental conditions, and durability requirements.

  • Project scope: Clearly define the scope of the caster project, including the purchasing quantity of casters, materials, caster sizes, packing requirements, and any custom specifications.
  • Technical Drawings: Make detailed 2D/3D technical drawings of the caster based on the customer’s requirements or samples.

  • Initial quotation: After the drawing is confirmed, make an initial quotation (unit price, mold tooling cost, customized packing material cost, etc) and the 
  • Prototyping:  Develop prototypes to test the functionality and performance of the casters. It can be a 3D printing model or a small batch for initial testing.

  • Timeline: Estimate the timeline for the project. Ensure that the customer’s expectations align with the available resources and timeframe.
  • Tooling and Equipment Setup:  On the basis of the finalized design, set up and adjust the necessary tooling and equipment for mass production.

  • Production of Components:  Manufacture individual caster components such as wheels and frames, according to technical specifications in confirmed drawings.

  • Surface Treatment: Apply surface treatments to enhance the aesthetics, corrosion resistance, hardness, or other functional aspects of the casters.

  • Assembly: Assemble the casters, making sure that each unit meets the design specifications and quality standards.

  • Load Testing: Test the casters according to the dynamic load test standard, such as EN12532, or conform to the test requirements of the customer. To ensure that the casters can handle the specified weight capacities without failure.

  • Durability Testing: Test the casters for durability under various conditions, such as different floor surfaces and temperature extremes, according to the customer’s demand.

  • Quality Control Checks:  Implement ISO9001 quality control measures throughout the manufacturing process. Identify and correct any defects.

  • Warranty: Clearly define and communicate the warranty terms for the casters.
  • Packaging: Develop packaging solutions that protect the casters during transportation and storage.

  • Shipping Logistics: Plan and coordinate the logistics for shipping the casters to the client, and confirm the paperwork details with the customer, such as invoice and packing list, bill of lading, Certificate of Original, Form E, etc.

Customer Support:  Provide ongoing support to address any queries, concerns, or further needs that the client may have after receiving the casters.

Caster manufacturing process

1

Cutting and Punching

Cutting metal sheets into pieces, punching out the specific shape of top plate, fork, brake pedal, etc.

2

Forming

Bending the shaped pieces and form it into the caster fork, forming the steel ball track on the top plate sheet, etc.

3

Surface treatment

Zinc plating, chrome plating, electrophoresis, etc.

4

Wheel injection / casting

Nylon wheel, PU wheel, TPR wheel, plastic wheels injection and die casting cast iron wheels.

5

Assembling and testing

Assemble all the caster components into one complete piece

6

Packing and shipping

Pack the casters in export grade thick carton box. Plastic bag, lable sticker, inner box, wooden crate, wooden pallet packing are also available.

6 steps to selecting the right casters

Step 1: Determine your product and mounting type

Plate-type swivel

Plate-type fixed

Bolt hole type

Screw-in type

Plate-type fixed

Bolt hole type

Step 2 – Determine your Load Capacity.

Here’s the formula for calculating load capacity per caster:

Load per caster with safety factor = (total load × safety factor) / number of casters

Total Load” is the equipment’s net weight plus its maximum additional load

Safety Factor is an additional weight allowance added to the calculated load per caster to ensure that the casters can handle unexpected or temporary overloads, variations in load distribution, and wear & tear over time. It typically ranges from 1.0 to 3.0, although the specific value can vary depending on the application and industry standards.

  • Safety factor: 1.0 to 1.5, for indoor manual transport, when the height of the obstacles is smaller than 5 % of the wheel diameter
  • Safety factor: 1.5 to 2.2, for Outdoor manual transport, when the height of the obstacles is bigger than 5 % of the wheel diameter
  • 1.4 to 2.0, for indoor power-driven transport, when the height of the obstacles is smaller than 5 % of the wheel diameter
  • 2.0 to 3.0, for outdoor power-driven transport

Step 3 - Determine the size of the wheel

The bigger the wheel, the easier to push the caster forward, because it can roll over obstacles or rough and uneven surfaces more easily. This is because a larger wheel makes the obstacles look smaller compared with the wheel’s size, making it roll over them more smoothly.

However, larger wheels will raise the center of gravity, so if you want to make sure things don’t tip over, especially if what you are carrying is heavy on top, smaller wheels are the better option. What’s more, smaller wheels can increase the amount of force required to move, helping to keep the equipment in place.

Another factor to consider is safety. It’s recommended that the total height of what you’re moving, including wheels and loaded goods, does not exceed 1400 mm. This will help to see better and avoid accidents.

Step 4 - Consider Your Application’s Environmental Influence

The following table describes the characteristics of some typical working environments that industrial casters often encounter.

Application Environment Environment Condition Wheel Material Preferred Noise Level Required Corrosion Resistance necessity
Hospital Rooms and Wards Smooth, clean floors with occasional spills and medical debris Non-marking, non-porous materials like polyurethane or rubber Low to minimize disruption High resistance to corrosion due to exposure to cleaning chemicals and bodily fluids
Operating Rooms Sterile environments with smooth, non-porous floors Non-marking, non-shedding materials like stainless steel or high-grade plastic for cleanliness and infection control Very low to maintain a quiet atmosphere during surgeries High resistance to corrosion due to exposure to cleaning chemicals and bodily fluids
Intensive Care Units (ICUs) High-traffic areas with smooth floors and medical equipment Heavy-duty materials like polyurethane or nylon for durability and weight capacity Low to minimize disruption High resistance to corrosion due to exposure to bodily fluids and cleaning agents
Emergency Departments Busy environments with variable floor surfaces and heavy foot traffic Heavy-duty materials like rubber or polyurethane for shock absorption and durability Low to moderate, depending on the specific area within the department Moderate to high resistance to corrosion due to exposure to cleaning chemicals and bodily fluids

Step 5 – Select your Tread Material

Choosing the right material depends on several criteria, the table below shows the types and their main characteristics.
Tread material
Maximum load
Performance on Uneven Floors
Resistance to Oil/Grease
Starting and Pulling Force
User Comfort
Shock/Vibration Absorption
Noise
Polyurethane High Good Good Low Good Good Low
Elastic Rubber Medium to high Good Good Low Good Moderate Moderate
Nylon High Fair Excellent Moderate Fair Poor Low
Plastic Medium to high Fair Fair Low Fair Poor Low
High performance TPR Medium Good Good Low Good Good Low

Step 6 - Choose the bearing type

The wheel bearing is important for the rolling performance of a wheel and for the mobility of the application equipment.

Plain bearing The plain bearing is a simple and cost-effective wheel bearing, which is durable and free of maintenance under normal conditions. Plain bearings are mainly used for light-duty and low-speed applications. Since overheating can occur at high speeds under heavy loads, plain-bore cast iron wheels require regular lubrication. 

Roller Bearing The roller bearing is a sturdy, long-life grease lubricated, and maintenance-free wheel bearing type that consists of steel rollers(needles) fitted into a plastic or steel cage. These rollers roll between the axle tube and the wheel hub. As the wheel rotates around the axle, it has only rolling friction rather than sliding friction, resulting in low rolling resistance, even under heavy loads. In addition to the standard version, roller bearings are also available in stainless steel. 

Ball Bearing A central ball bearing ensures precise, smooth running and effective sealing. it is integrated or injected directly into the wheel center. Two sealing caps are fitted as standard for added protection. Lubricated with long-life grease, these bearings are maintenance-free under regular conditions.

Caster position guide

Type of configuration
Characteristics
Advantages
2 swivel & 2 fixed
Most frequent layout for heavy loads and long distancesAffordable, easy to keep on a straight line, easy to nevigate
2 swivel & 2 fixed
(Diamond pattern)
Used on ramps are not recommendedEasy to handle
4 swivel
For applications requiring lateral movementEasy to push and pull, make sharp turns and navigate corners smoothly
4 fixed
Light loads, used on ramps are not recommendedEconomic positioning
4 swivel & 1 fixed
For heavy loads, precise steeringEasily turned and rotated, easily positioned in tight spaces, and change directions quickly
4 swivel & 2 fixed
For very heavy loads and long travel timesThe 2 fixed casters allow the weight of the load to be distributed over the 4 swivel ones

Frequently asked questions

Can I use the same casters for different types of stage equipment, such as equipment carts and light stands?

While some casters may be suitable for multiple types of stage equipment, it’s essential to consider the specific requirements of each piece of equipment and choose casters accordingly.

What types of casters are best for use on stage equipment?

The best type of casters for stage equipment is typically those with swivel or rigid configurations, depending on the maneuverability needed for the equipment. Additionally, casters with non-marking wheels are preferred to protect the stage surface.

Why are caster wheels not turning?

Various factors including dirt, pet fur, lint from high-pile carpets, dust, threads, fabric remnants, hairiness, and poor-quality lubricant can cause poor rotation of caster wheels. In addition, small items like beads, pebbles, screws, or glitter can get stuck in the caster and prevent them from turning smoothly.

Why do casters wobble and how to stop it?

If the caster is not properly aligned with the ground, it may flutter. Misalignment can occur due to incorrect installation or damage to the caster’s forks. In most cases, using the caster wheel at high speeds will cause fluttering.
If the wheels are dirty, remove any dirt and dust. Then apply cleaning spray to each caster and wipe it down with a cloth to maintain its functionality. Ensure that the wheels are dry before using the equipment. If you still experience instability in the wheels, try applying lubrication.

How many caster wheels do I need?

Typically, four caster wheels are necessary to make the equipment mobile. To ensure compliance with weight specifications, follow a straightforward calculation process. Firstly, calculate the total weight of the load. Next, divide this figure by your proposed number of casters. If the outcome is below the load capacity limit for each caster, you are on the right track in picking the suitable caster.

How many caster sizes are there?

Caster wheel sizes range from 1 inch to 12 inches, and possibly larger. Each caster size has a different load capacity and contributes to the equipment’s height, ensuring that the caster can support the load without causing an awkward working height.

When should I replace my caster wheels?

Any part of the caster can be affected by impact damage, if it is damaged, it should be replaced. whether it is the wheel, tread, brackets, mounting plate, or bearings. 

What sizes should be measured when you want to replace a caster?

  1. The top plate size: to ensure the replacement caster fits.
  2. The bolt-hole pattern(hole distance): for alignment.
  3. The wheel size: Wheel diameter and wheel width
  4. Swivel Radius: improves the ergonomics and safety
  5. Measure the Overall Height of the caster
  6. Get in touch with the caster expert:  Contact WheelsWay

Are bigger caster wheels better?

Your choice of caster size should depend on how you intend to use them. A bigger caster is better for heavy materials. For example, if you’re designing a workbench, you’ll need to support more weight, so larger casters are more suitable, however, smaller casters are a better option when what you are carrying is heavy on top and you want to make sure things don’t tip over. Smaller casters are suitable for carpets and soft surface.

How do you stop caster wheels?

There are several ways to stop caster wheels from rolling:
  1. Place a Rug under where the wheels are rolling. 
  2. Use locking casters
  3. Use braking casters
  4. Use casters with adjustable pad
  5. Install floor locks.
  6. Use caster cups/stoppers

How long do castor wheels last?

A caster can last many years without replacement if it’s crafted and treated in proper ways:
 
Manufacturing:
1. The caster construction is solid by using quality machines to manufacture and quality components for assembling.
2. The thickness of the surface treatment of the caster housing is neither too thick nor too thin, take zinc plating for example, a qualified zinc plating can last 10 years and even more in the indoor environment and 3 years or more in outdoor environment.
 
Maintenance:
Proper care and preventive maintenance will greatly extend the life of the castors, whereas misuse and mistreatment can lead to premature failure.

How much height do casters add?

If your equipment initially had a height range of 30 to 40 inches, and the total height of a caster is 5 inches, the addition of the caster makes the range 35 to 45 inches. However, different casters offer different total heights due to their design and application purpose, the key is to make sure the working height is in a comfortable range.
 

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